Installation and
Maintenance
Manual for the
ASHCROFT Type
1305D Deadweight
Tester and Type
1327D Portable
Pump
®
®

I&M002-10095_RevF_(250-1526)_09-20-22

2 of 20

1.0 PURPOSE AND SCOPE OF MANUALThis manual is provided to guide users of Model 1305D
and 1327D pressure testing devices in:(1) installing the equipment(2) Routine operations

Ashcroft® Installation and Maintenance Manual
for the Ashcroft® Type 1305D Deadweight Tester
and Type 1327D Portable Pump
INDEX
Section Description
1.
Scope of Manual Safety Precautions
2.
Product Description 1305
Theory of Operation
Construction
Specifications

The instructions in this manual are designed to be performed by qualified instrument maintenance personnel.
Ashcroft Inc. does not recommend troubleshooting or
repairs beyond the scope of this manual. Problems thatcannot be remedied by following the instructions in thismanual should be referred to the manufacturer. Immediate
assistance can often be supplied by telephone. Defective
components will be repaired or replaced by the manufacturer at his discretion and will be returned to the user by
the same mode of shipment. Airmail or air express is recommended for urgent shipments. Returned goods shouldbe accompanied by information requested in Section 6.

Product Description 1327
Theory of Operation
Construction
Specifications
3.
Inspection
Installation
1305
Operation
1305
Installation
1327
Operation1327
4. 	Factors Affecting Operation of Deadweight
Testers
5.
Maintenance Instructions
6.
Warranty
Shipping Instructions
List of Illustrations

Contact Customer Service at:

Ashcroft Inc.
250 East Main Street
Stratford, CT 06614
Phone: (203) 378-8281
Fax: (203) 385-0402

www.ashcroft.com
email: info@ashcroft.com

Figure 1-1
Figure 1-2
Figure 2-1
Figure 2-2
Figure 5-1

1.1 Safety Precautions
Pressure Testing Equipment must be selected and usedin accordance with recognized industry codes and safety
practices to avoid the possibility of misuse or misapplication which could result in personal injury or property damage. Personnel responsible for selection and installation
should also be familiar with the safety recommendationsof ASME B40.1 that apply to elastic pressure elements
and their application in general and specific services.
ASME B40.1 is available from:ANSI		    or1430 Broadway		
New York, NY 10018

ASME
345 47th Street		
New York, NY 10017

1. Pressure – Select a range so that the maximum applied pressure will never exceed the upper range limit.
2. Vibration – Excessive vibration could cause a loosening of components and abnormal wear resulting in loss of
instrument accuracy or failure to provide valid data.
3. Temperature – Operation of the instrument in an environment where temperatures are in excess of design
ratings may result in loss of accuracy and failure.
4. Process – Pressure boundary materials must be resistant to the process media. Failure to assure compatibility
may result in pressure boundary deterioration or failure.
Instruments operated at high pressure or with potentiallyhazardous service, such as oxygen, should be carefully
selected in accordance with recognized industry codes
and the recommendations of ASME B40.1.
2.0 PRODUCT DESCRIPTION –THEORY OF OPERATION – CONSTRUCTION
2.1.2 Product Description
2.1.3 Construction
The Ashcroft Type 1305D Dual Range Deadweight testers
are precision built primary pressure standards, used fortesting, setting, calibrating or repairing pressure measuring devices within the test points 15 psi (100kPa) to
10,000 psi (70,000kPa).

3 of 20

Pressure calibration points produced by the deadweighttester are accurate to within ± 0.1% of the reading certified
traceable to the N.I.S.T. The tester provides consistent, repeatable accuracy, maintaining its pressure for an appreciable length of time regardless of temperature changes,
slight leaks in the pressure system, or changes in volumeof the pressurized system due to movement of a Bourdon
tube or other device.

2.1.3 Specifications – 1305D
Accuracy: Combined tolerance of weights and piston andcylinder assemblies within 0.1% of reading. Weight tolerance within 0.05% of mass. Piston and cylinder is within
0.05% of rated mean effective area.
Deadweight: Non-magnetic die cast zinc alloy. Total
weight to produce maximum pressure of 10,000 psi(70,000kPa) is 125 lbs. (56.7 kg).
Piston & Cylinder Assemblies: High strength stainlesssteel piston and cylinder with brass collar and aluminum
weight platform.
Pump: Two stage, lever operated generates 10,000 psi(70,000 kPa) with 28 pounds (12.7 kg) of force on leverhandle.
Pump Body: Aluminum, corrosion inhibited and coatedwith baked blue epoxy finish.
Shuttle Valve: Stainless steel bypass valve that controls
rate of pressure increase and reduces operator effort
when working at high pressure.
Displacement Valve: A fine pitched threaded valve rod
permitting vernier adjustments to fluid volume and provide
precise pressure changes or adjustment of piston travel.
Limit stops prevent rod removal during normal operation.
Mounting: Four bench mounting holes located in base forpositive mounting to any level surface.
Instrument Connections: Two coned pipe assemblies
provide vertical calibration capability for back and lower
connected gauges. Standard 1⁄4 inch internal NPT and 1⁄2
inch inter NPT fitting adapters are supplied.
Operating Fluid: 1305D – Light grade machine oils, automotive petroleum base SAE 20 oils or other equivalent
fluids suitable for use with Buna N O-ring materials. 1.5
pints required (.7 liters).

A hand jack set, three wrenches, spare O-rings, and a
special adapter for making connections to pressure outlets
that do not accommodate cone pipe seating, are included
with each unit.

1305DH – Most hydraulic oils of phosphate ester base,brake fluids, skydrol, pydraul etc., suitable for use with
Butyl or Ethylene-Propylene O-ring materials. 1.5 pints
required (.7 liters).

All deadweight testers are supplied with lower and backconnection offset pipe assemblies, with pipe adapters for1⁄4 NPT or 1⁄2 NPT connections.

2.1.4 Certification:
Standard (CD-3) – Traceable calibration certificate­(accuracy/traceability statement only).
Optional (CD-5) – Certification document includes actual(as left) weight values for each weight and piston, piston
diameter values, environmental data and test n­ umbers.
Set includes numbered weights.

The deadweight tester consists of a two stage hydraulicpump containing a manifold which is pressurized during
operation. Integral to the pump is a shuttle valve thatallows the operator to regulate the speed of pressure increase. One connection to the manifold includes a cylinderand a free-floating precision machined piston with a platefor holding calibrated weights. A second connection to the
manifold accommodates a gauge or other pressure measuring device to be calibrated or checked. Incorporated
into the manifold is a hand operated displacement valvethat allows small adjustments in fluid volume to be madewithout further operation of the pump handle or releasevalve.
The tester is dual range having two interchangeable pistonand cylinder assemblies. One is a low pressure piston
having an effective area five times larger than that of thehigh pressure piston. The low pressure piston is used formaking measurements below 2,000 psi (14,000 kPa). The
high pressure piston, with an area 1/5 that of the low pressure piston, is used to measure pressure through 10,000
psi (70,000 kPa). The weight masses are pre-measured
and identified with the pressure values they produce when
operated with the interchangeable piston and cylinderassemblies.

An all metal, double-latched, top handle carrying case issupplied with the complete tester for all fittings and attachments. Deadweights are packed in metal, double-latchedstorage-carrying boxes.

2.2 Product Description 1327D

2.1.2 Theory of Operation – 1305D
The theory behind a deadweight tester can be expressed
as simply as force acting upon a known area. Pressure
produced by the pump is distributed by the manifold, tothe base of a precision machined piston and to a device
being calibrated or checked. Pre-selected weights loaded
onto the piston platform are acted upon by gravity anddevelop a force that is to be equally opposed by the fluidpressure from the pump. When equilibrium is achieved,
the pressure value is known, it being a direct result of thesum of the forces from the weights, piston platform andthe piston divided by the effective area of the piston andcylinder assembly.

2.2.1 Construction
The Ashcroft Type 1327D Portable Test Pumps arerugged, versatile pressure transfer standards, used fortesting, setting, calibrating or repairing pressure measuring devices with ranges up to 10,000 psi (70,000kPa). A
selection of high accuracy test gauges, with a precision of±0.25% of span, are supplied as the standard to which thedevice under test is compared.
The main component to the tester is a two stage hydraulicpump containing a manifold which is pressurized during
operation. Integral to the pump is a shuttle valve thatallows the operator to regulate the speed of pressure increase. One connection to the manifold has a straight pipewith a precision test gauge attached serving as the reference standard. A second connection to the manifold accommodates a gauge or other pressure measuring device
to be calibrated or checked. Incorporated into the manifold
is a hand operated displacement valve that allows small
adjustments in fluid volume to be made without further operation of the pump handle or release valve.

With the 1305D two piston and cylinder assemblies aresupplied, one having an effective area 1/5 of the other.
When using the smaller piston and cylinder assembly, fivetimes more pressure is required to oppose the force of aconstant mass being acted upon by gravity. For this reason the masses supplied with the tester are stamped withtwo pressure values, the value being contingent on theeffective area of the piston and cylinder assembly selected.

4 of 20

ModelPiston Assembly
Piston			Net
NumberPressure Range
Piston Area
Value
Number of Weights by Value
Weight								
L-5
L-10
L-20
L-40
L-100		psi Type
Low
High
Low
High
Low High
lbs.
kg.
H-25
H-50
H-100 H-200 H-500

1305D-101305DH-10
15/20075/1000			 5
25
1
3
2
3
-60
27
1305D-20													1305DH-20
15/40075/2000			 5
25
1
3
2
3
2
70
32
1305D-30			
.0625 in.2 .0125 in.2									1305DH-30
15/60075/3000(.4032) (.0806)
5
25
1
3
2
3
4
85
39
1305D-50													1305DH-50
15/1000
75/5000			 5
25
1
3
2
3
8
105 481305D-100													1305DH-100
15/2000
75/10000			 5
25
1
3
2
3
18
175 80Model
Piston Assembly
Piston			Net
NumberPressure Range
Piston Area
Value
Number of Weights by Value
WeightM
METRIC RANGES ARE NO LONGER AVAILABLE – INFORMATION FOR REFERENCE ONLY
2								
L-.5
L-1
L-2
L-4
L-5		
Low
High
Low
High
Low Highlbs.
kg.
kg/cm Type
H-2.5
H-5
H-10
H-20
H-25

1305DM-20
1305DMH-20
1/20--			 .5
2.5
1
1
2
1
2
63
29
1305DM-100													1305DMH-100
1/20
5/100			 .5
2.5
1
1
2
1
2
65
30
1305DM-150			
.0625 in.2 .0125 in.2									1305DMh-150
1/30
5/150
(.4032) (.0806) .5
2.5
1
1
2
1
4
75
34
1305DM-350													1305DMH-350
1/70
5/350			 .5
2.5
1
1
2
1
12
105 481305DM-700													1305DMH-700
1/140
5/700			 .5
2.5
2
1
2
1
26
175 80Model
Piston Assembly
Piston			Net
NumberPressure Range
Piston Area
Value
Number of Weights by Value
Weight								 L-.5
L-1
L-2
L-4
L-5		
bar Type
Low
High
Low
High
Low High
lbs.
kg.
H-2.5
H-5
H-10
H-20
H-25

1305DB-20
1305DBH-20
1/20--			 .5
2.5
1
1
2
1
2
63
29
1305DB-100													1305DBH-100
1/20
5/100			 .5
2.5
1
1
2
1
2
65
30
1305DB-150			
.0613 in.2 .0123 in.2									1305DBH-150
1/30
5/150
(.3954) (.0791) .5
2.5
1
1
2
1
4
75
34
1305DB-350													1305DBH-350
1/70
5/350			 .5
2.5
1
1
2
1
12
105 481305DB-700													1305DBH-700
1/140
5/700			 .5
2.5
2
1
2
1
26
175 80Model
Piston Assembly
Piston			Net
NumberPressure Range
Piston Area
Value
Number of Weights by Value
Weight								 L-50
L-100 L-200 L-400 L-500		
Pascal Type
Low
High
Low
High
Low Highlbs.
kg
H-250 H-500 H-1000 H-2000 H-2500.

1305DA-2000
1305DAH-2000
1305DA-10000
1305DAH-10000
1305DA-15000
1305-DAH-15000
1305DA-35000
1305DAH-35000
1305DA-70000
1305DAH-70000												100/2000--			 50 250
1
1
2
1
2
63
29
												100/2000
500/10000			 50 250
1
1
2
1
2
65
30
		.0613 in.2 .0123 in.2									100/3000
500/15000 (.3954) (.0791) 50 250
1
1
2
1
4
75
34
												100/700
500/35000			 50 250
1
1
2
1
12
105 48												100/14000 500/70000			 50 250
2
1
2
1
26
175 80Dimensions in ( ) are square centimeters													TABLE 2-1

5 of 20

Pressure values produced by the pump are able to beclearly read to within ±0.25% accuracy of the span of the
precision test gauge selected for testing. Certification oftest gauge accuracy traceable to the N.I.S.T., is available
upon request. A hand jack set, three wrenches, spareO-rings, and special adapter for making connections topressure outlets that do not accommodate cone pipe seating, are included with each unit.
Test pump accessories include lower and back connection
offset pipe assemblies, with pipe adapters for 1⁄4 and 1⁄2
NPT connections.
An all metal, double-latched, top handle carrying case issupplied with the complete tester to hold all fittings andattachments.
2.2.2 Theory of Operation – 1327D
The operating principle behind the 1327D Test Pump isa simple form of comparison. Pressure produced by thepump is equally distributed by the manifold to a test gauge
and to a device being calibrated or checked. The readingof the test gauge serves as the reference to which otherdevice readings are compared against.
Selection of the test gauge range is the determining factor
in establishing the precision to which a comparison checkis to be made. Test gauge accuracy is expressed as a percentage of its span.
Proper selection of the test gauge range must be madeto minimize the amount of the unit error. If a 5,000 psi(35,000kPa) range test gauge were used to test devices
whose span values were less than a fourth of the test
gauge range, the unit error of 12.5 psi (87kPa) would begreater than 1% of the test pressure. Therefore, it is important to select a test gauge that has a full scale range
equal to or only slightly in excess of the pressure value tobe measured.

1327DH – Most hydraulic oils of phosphate ester base,brake fluids, skydrol, pydraul etc., suitable for use with
Butyl or Ethylene-Propylene O-ring materials. 1.5 pints
required (.7 liters).
1327DO – Distilled water with compatible corrosion inhibitor. A .1% solution of sodium dichromate is a suitableinhibitor. 1.5 pints required (.7 liters).
2.2.4 Certification:
Standard – Master gauges are calibrated on traceable
standards, no certification documentation provided.
Optional (CD-4) – Traceable calibration certificate foreach master gauge.
3.0

SETTING UP THE TESTER

3.1

Inspection

3.1.1
Component Check 1305D
The deadweight tester, as shipped from the factory,
contains all of the components necessary for operation
except pump fluid. Depending upon the model and pressure range selected, the total number of weights, weightboxes and piston and cylinder assemblies will vary. Refer
to Specifications, Section 2.1, Table 2-1 for model clarification.
3.1.2 Component Check 1327D
The portable test pump, as shipped from the factory, contains all of the components necessary for operation except
pump fluid. Depending upon the model and pressure
range selected, the total number and their ranges will vary.
Refer to Specifications , Section 2.2, Table 2-3 for modelclarification.
3.1.3 Claim for Missing or Damaged Goods
In the event it is determined that an item is missing or
damaged, contact Customer Service immediately at theaddress indicated in Section 1.0. Damaged merchandise
and the packaging materials must be held for inspection
by authorized Ashcroft Inc. personnel or the responsible
carrier. Disposition of damaged or missing goods will be
determined after inspection has been ­performed on location, or at the discretion of the manufacturer, at the factory.
Inspection may be waived if circumstances, as judged by
the manufacturer, preclude its necessity.

2.2.3 Specifications – 1327D
Accuracy: 1⁄4% of 1% of test gauge span.
Test Gauges: Ashcroft solid front type 45-1082-02L-XAZ,
41⁄2˝ dial size (120mm case). Bourdon tube materials for
1327D and DH are bronze and Monel. Bourdon tube materials for 1327DO are bronze and Monel.
Pump: Two stage, lever operated generates 10,000 psi(70,000kPa) with 28 pounds (12.7kg) of force on leverhandle.

3.2 Installation Type 1305D
3.2.1 Set-up Procedure (See Figure 2-1)
To remove the tester from the case, release the springclip, depressing the clip by hand, grasp the pump reservoir
and lift up the back end of the pump assembly.

Pump Body: Aluminum, corrosion inhibited and coatedwith baked blue epoxy finish.
Shuttle Valve: Stainless steel bypass valve that controls
rate of pressure increase and reduces operator effort
when working at high pressure.

Having removed the pump assembly from its carrying
case, remove the two plastic shipping plugs.
Select a lower connection (64) or back connection (66) offset pipe and connect to inner pump body outlet as shownin Fig. 2-1.

Displacement Valve: A fine pitched threaded valve roadpermitting vernier adjustments to fluid volume to provide
precise changes. Limit stops prevent road removal during
normal operation.
Mounting: Four bench mounting holes located in base forpositive mounting to any level surface.
Instrument Connections: Two coned pipe assemblies
provide vertical calibration capability for back and lower
connected gauges. Standard 1⁄4 inch internal NPT and 1⁄2
inch internal NPT fitting adapters are supplied.
Operating Fluid: 1327D – Light grade machine oils, automotive petroleum base SAE 20 oils or other equivalent
fluids suitable for use with Buna N O-ring materials. 1.5
pints required (.7 liters).

Remove the reservoir filler plug (35) and fill reservoir with
operating fluid.
3.2.2 Bench Space Required (See Figure 1-1)
Allow a space:
10 inches (25.4 cm) width
27 inches (68.6 cm) depth
22 inches (55.9 cm) height – allows for maximum load ofdeadweights
3.2.3 Storage Space Required
One Tester Box:101⁄2 inch (2.6 cm); 221⁄2 inch (57 cm) depth; 10 inch (25cm) height

6 of 20

Unit Of
MeasureModel		NumberCase

		 1327*
		
1327H*
		 1327O
		 1327D
		
1327DH
		 1327DO
		 1327DG-2
		
1327DGH-2
		 1327DGO-2
		 1327DG-6
		 1327DGH-6
		 1327DGO-6
psig
1327DG-50
		 1327DGH-50
		 1327DGO-50
		 1327DG-100
		 1327DGH-100
		 1327DGO-100
		 1327DMG-10
		
1327DMGH-10
		 1327DMGO-10
		 1327DMG-40
		 1327DMGH-40
		 1327DMGO-40
kg/cm21327DMG-250
		 1327DMGH-250
		 1327DMGO-250
		 1327DMG-600
		 1327DMGH-600
		 1327DMGO-600
		 1327DBG-10
		
1327DBGH-10
		 1327DBGO-10
		 1327DBG-40
		 1327DBGH-40
		 1327DBGO-40
bar1327DBG-250
		 1327DBGH-250
		 1327DBGO-250
		 1327DBG-600
		 1327DBGH-600
		 1327DBGO-600
		 1327DAG-1000
		
1327DAGH-1000
		 1327DAGO-1000
		 1327DAG-4000
		 1327DAGH-4000
Pascal 1327DAGO-4000(kPa)
1327DAG-25000
		 1327DAGH-25000
		 1327DAGO-25000
		 1327DAG-60000
		 1327DAGH-60000
		 1327DAGO-60000
		

		
		

Tools &		
Access.
Gauge Range(s) Included

Net Weightlbs.		 kg

–

–

–

–

–

–

12

5

X

X

–

–

–

–

34

15

X

X

0/150

–

–

–

36

16

X

X

0/150

0/600

–

–

38

17

X

X

0/150

0/600

0/5000

–

40

18

X

X

0/150

0/600

0/50000/10000

42

19

X

X

0/10

–

–

–

36

16

X

X

0/10

0/40

–

–

38

17

X

X

0/10

0/40

0/250

–

40

18

X

X

0/10

0/40

0/250

0/600

42

19

X

X

0/10

–

–

–

36

16

X

X

0/10

0/40

–

–

38

17

X

X

0/10

0/40

0/250

–

40

18

X

X

0/10

0/40

0/250

0/600

42

19

X

X

0/1000

–

–

–

36

16

X

X

0/10000/4000

–

–

38

17

X

X

0/10000/40000/25000

–

40

18

X

X

0/10000/40000/25000

0/60000

42

19*Includes Test Pump Only

TABLE 2-2

7 of 20

One Weight Box:
10 inch (25 cm) width; 10 inch (25 cm); 10 inch (25 cm)
heightStorage space dimensions are larger than actual size oftester carrying case and deadweight carrying case byapproximately _ inch, (1.3 cm), in order to facilitate ease ofhandling in storage.
Note: For catalog numbers 1305D, DH-100, 1305DM,
DMH-150, 1305DB, DBH-700 and 1305DA, DAH700 allow storage space for two weight boxes.
3.3 Operation 1305D
3.3.1 Piston and Cylinder Selection
The 1305D Tester is a dual range device in that most-models utilize two interchangeable piston and cylinderassemblies for measurement of pressure throughout theentire range. Each piston and cylinder assembly has aminimum and maximum operating range. First, determine
what pressure points need to be measured and select theappropriate assembly. The pressure range of the assemblies is shown in Table 2-1. When priming the pump thehigh pressure piston and cylinder assembly should be used.
3.3.2 Priming the Pump
The offset pipe (64 or 66 Figure 2-1) should already be
secured in place and the reservoir should contain the operating fluid (refer to Installation Section 3.2).
Close the release valve (37) by turning it clockwise andopen the air vent by loosening the filler plug (35) a few
turns. The shuttle valve (51) should be pulled outward
from the pump body, the end of the knob approximately
even with the edge of drip pan. In this position the high­volume displacement mode is selected and the pump is
self-priming. Operate the pump handle several times using
full strokes, until you see fluid appear in the outer pumpbody outlet.
The cone seat (82) is located in the base of the outer-pump body outlet and serves as the sealing surface
between the bottom of the piston and cylinder assembly
and the pump body. Confirm the coned end of the seat
is facing up and the cylindrical end of it is facing down.
Thread the high pressure piston and cylinder assembly(79) or (67) into the outer body outlet as shown, using thewrenches provided.

in towards the pump body and continue pumping to thedesired test pressure. Open the release valve (37) to ventthe pressure. To check operation pull the shuttle valve
outward, close the release valve and operate the pumphandle several times. When handle resistance is felt, push
the shuttle valve inward and continue pumping within therange of the test device.
Entrapped air will prevent the pump from operating in thehigh pressure valve position or cause it to achieve only
partial pressure. Repeat the above bleed procedure asnecessary to assure all air is removed. Once air is removed the pump will continue to operate without further
attention providing the reservoir level is maintained.
3.3.3 Weights
The weight set consists of a selection of various masses
that will produce desired pressure increments when operated with the appropriate piston and cylinder assembly.
Each weight is stamped with two pressure values. Whenapplied to the high pressure piston and cylinder assembly
the equivalent pressure value is indicated next to the letter“H”. Conversely, when applied to the low pressure pistonand cylinder assembly the equivalent pressure value is indicated next to the letter “L”. The piston and piston platform
also contribute to the total mass. Their equivalent pressure
value is stamped on the top of the platform.
During normal operation, selected weights are added tothe plate and piston assembly to equal the desired pressure value.
3.3.4 Levelness
The deadweight tester must be level to function properly.
The unit may be leveled by placing a bubble type level on
top of the piston plate and revolving it slowly. Shims may
be used between drip pan and bench to level the piston
plate. The unit is level when the position of the bubble
does not change within the glass as it is rotated on top of
the piston assembly.
3.3.5 Making the Test
Add weight to the piston plate to give desired calibratingpressure.

Operate the pump handle a few more times until fluid
is observed at the end of the offset pipe. Connect thegauge or other device to be tested to the offset pipe.
For purposes of priming, the device must be designed
to withstand the full operating pressure of 10,000 psi(70,000kPa). If a lower range device must be used, extreme care must be exercised to avoid overpressuring
its pressure element. Seal the connection to the device
by tightening nut adapter (62) and adapter (60) until theconed end of the pipe is forced into its inlet. If necessary,rotate the device for viewing by loosening nut adapter (62),set it to the proper position and retighten nut adapter.
Again, operate the pump handle a few more times. Aftera few strokes positive pressure will develop and the pumphandle will begin to resist pumping action. Raise the pumphandle to its uppermost travel position. Loosen the bleed
screw (30) a half turn counter clockwise and slowly operate the pump handle through a downward stroke until
fluid flows steadily from the bleed vent. Close the bleed
screw just prior to completing the downward handle motion. Repeat this action until no air bubbles are observedin the fluid flow. (Note – the bleed screw must be closed
when the handle is being raised). Push the shuttle valve
8 of 20

Pull the shuttle valve (51) outward from the body andclose the pressure release valve (37). Operate the pumphandle until the fluid pressure forces the piston to raise theweights. When pumping, the weights should be rotatedslowly to decrease cylinder wall friction. If pump handle
resistance is difficult and the weights have not risen, push
the shuttle valve inward and continue pumping. With the
shuttle valve pushed in, the fluid displacement of eachstroke is reduced, thereby requiring less effort to continue
pumping.
The piston assembly has a maximum lift of 3⁄4 inch (1.9cm). It is recommended that readings be taken at midpoint, or 3⁄8 inch (1 cm) lift. Small adjustments to the piston
lift can be made with the pump handle or the displacement
valve (41).
Improper readings will result if the piston plate is so lowthat it rests on the bushing, or so high that the internal
stop on the piston assembly is touching the underside of
the bushing.
Spin the weights by hand and take readings only when
the weights are spinning. Speed of rotation is unimportant, although a slow speed is more convenient and­recommended.
To release pressure, turn valve (37) counterclockwise slowly.
3.3.6 To Dismantle

Figure 2-1 Ashcroft Portable Deadweight Tester 1305D

9 of 20

To replace the tester in its case, remove the gauge offset
pipe assembly (64 or 66) and the piston and cylinderassembly (67 or 79). Install shipping plugs in body outlet
holes. Screw in the displacement valve (41) until it stops.
Close the vent plug (35). Open the release valve (37) approximately _ turn. Replace the tester in its case, reservoir
last. Engage the spring clip catch.
3.3.7 General Precautions
It is important that the deadweight tester be connected toa leak tight system.
The deadweight tester should be set-up so that the axisof the located piston is vertical, the weights carefully centered on that axis, and the piston rotated during use. The
purpose of the rotation is to spread the lubricant over theentire surface between piston and cylinder, so that there
will be no metal-to-metal contact. If rotation is not maintained, the lubricant film will not cover the surface properly,
and readings will be in error.

position, and re-tightening nut adapter.
Repeat the above procedure to connect the gauge being
tested to the offset pipe assembly (64) or (66).
3.4.3 Bench Space Required
Allow a space:
10 inch (2.5 cm) width
23 inch (5.8 cm) depth
22 inch (5.6 cm) height allows for testing gauges up to 8.5
inch (250 mm) size
3.4.4 Storage Space Required101⁄2 inch (27 cm) width
221⁄2 in (57 cm) depth
10 inch (25 cm) height
Storage space dimensions are larger than actual size oftest pump carrying case by approximately 0.5 inch (1.3cm), in order to facilitate ease of handling in storage.
3.5 Operation 1327D

The high and low pressure piston assemblies have aninternal overload stop, which prevents the piston and cylinder from being forced apart if weights are accidentally
removed.

3.5.1 Test Gauge Selection
The portable test pump is used for calibrating instruments
such as pressure gauges, pressure switches or otherpressure devices rated up to 10,000 psi (70,000kPa).

3.3.8 Operating Fluids
Standard Tester:Any medium weight oil may be used (including automotive
oils S.A.E. 10, 20 or 30) S.A.E. 20-W recommended.

First, select the proper test gauge, depending upon thepressure range desired. When priming the pump a test
gauge rated to 10,000 psi (70,000kPa) should be used.

Hydraulic Tester:Any hydraulic fluid (silicate or phosphate base). Skydrol or
Pydraul is suitable.
For normal operation, it is not necessary to change theweight of oil for various pressures. A lighter oil may be
used where low pressures are being checked, and aheavier oil where higher pressures are being tested.
The reservoir can be refilled while the tester is operating
under pressure.
3.3.9 Caution
Standard testers designed for oil service may not be usedwith water for oxygen service.
3.3.10
Hydraulic service testers should not be filled with water or
any oil other than hydraulic fluid. Serious pump failure may
occur due to O-ring damage.
3.4. Installation Type 1327
3.4.1 Set up Procedure (See Figures 2-2)
To remove the test pump from the case, release the springclip, depressing the clip by hand, grasp the pump reservoir, and lift up the back end of the pump assembly.
Remove the two plastic shipping plugs from the outlet
connections. Remove the threaded filler plug (35) fromreservoir filling hole. Remove the offset pipe (64) or (66)from the carrying case and connect to the inner pumpbody outlet as shown in Figure 2-2. Remove the straightpipe extension (58), and assemble to outer vertical pumpbody outlet as shown in Figure 2-2.
3.4.2 Connecting The Gauge (See Figure 2-2)
Select a test gauge that is adequate for the pressure
range desired. Assemble the test gauge to the straightpipe extension, using adapter nut (62), collar (61), adapter(60) and reducer bushing (59).
Seal the connection by tightening nut adapter (62) andadapter (60) until the coned end of the pipe is forced into
the gauge socket. Rotate the gauge for viewing by loosening nut adapter (62), setting the gauge to the desired
10 of 20

3.5.2 Priming The Pump
The offset pipe (64 or 66 Figure 2-2) and straight pipe
extension (58) should already be secured in place and thereservoir should contain the operating fluid (refer to installation Section 3.4).
Close the release valve (37) by turning it clockwise andopen the air vent by loosening the filler plug (35) a few
turns. The shuttle valve (30) should be pulled outward
from the pump body, the end of the knob approximately
even with the edge of the drip pan. In this position the highvolume displacement mode is selected and the pump is
self-priming. Operate the pump handle several times using
full strokes, until you see fluid appear at the top of thestraight pipe extension. Connect the test gauge to it (refer
to Installation Section 3.4 for proper gauge connection).
Operate the pump handle a few more times until fluid
is observed at the end of the offset pipe. Connect thegauge or other device to be tested to the offset pipe.
For purposes of priming, the device must be designed
to withstand the full operating pressure of 10,000 psi(70,000kPa). If a lower range device must be used, extreme care must be exercised to avoid overpressuring
its pressure element. Seal the connection to the device
by tightening nut adapter (62) and adapter (60) until theconed end of the pipe is forced into its inlet. If necessary,rotate the device for viewing by loosening nut adapter (62),set it to the proper position and retighten nut adapter.
Again, operate the pump handle a few more times. Aftera few strokes positive pressure will develop and the pumphandle will begin to resist pumping action. Raise the pumphandle to its uppermost travel position. Loosen the bleed
screw (51) a half turn counter clockwise and slowly operate the pump handle through a downward stroke until
fluid flows steadily from the bleed vent. Close the bleed
screw just prior to completing the downward handle motion. Repeat this action until no air bubbles are observedin the fluid flow. (Note – the bleed screw must be closed
when the handle is being raised). Push the shuttle valve
in towards the pump body and continue pumping to thedesired test pressure. Open the release valve (37) to ventthe pressure. To check operation pull the shuttle valve
outward, close the release valve and operate the pumphandle several times. When handle resistance is felt, push
the shuttle valve inward and continue pumping within therange of the test device.

The reservoir can be refilled while the test pump is operating under pressure.

Entrapped air will prevent the pump from operating in thehigh pressure valve position or cause it to achieve only
partial pressure. Repeat the above bleeding procedure
as necessary to assure all air is removed. Once air is removed the pump will continue to operate without further
attention providing the reservoir level is maintained.

3.5.8
Hydraulic service testers should not be filled with water or
any oil other than hydraulic fluid. Serious pump failure may
occur due to O-ring damage.

3.5.7 Caution
Standard testers designed for oil service may not be usedwith water for oxygen service.

4.0 FACTORS AFFECTING OPERATION OF
DEADWEIGHT TESTERS

3.5.3 Making The Test
Turn displacement piston handle (41) to mid-position, sothat it may be used for setting an exact pressure on thegauge. The displacement piston has internal stops which
prevent unscrewing or accidental loss of pressure.
Clockwise rotation of displacement piston will produce
an increase in pressure; counterclockwise will decrease­pressure.
Prior to taking readings, both gauges should be finger-tapped lightly at the center of the gauge face, to eliminate any movement friction. Note the pressure readingson the test gauge and the gauge under test. If the pressure indicated on the gauge under test is not equal (within
the tolerance of the gauge) to the pressures of the mastertest gauge, the gauge being tested requires calibration.
CAUTION:
Do not pump handle to pressures greater than the pressure range of the gauges connected to the test pump, as
this may damage the gauges.
3.5.4 To Release Pressure
Open release valve slowly (37), until pressure returns tozero. Do not loosen any connections until pressure in thegauge tester has reached zero, as indicated on the test
gauge.

4.1 Deadweight Tester Accuracy
Excellent accuracy is possible using the deadweight tester through analysis and control of certain factors. If thetester’s rated accuracy of 1/10th of 1% is adequate, then
the nominal pressure (sum of the denominations of theweights loading the piston) may be assumed to be correct.
The pressure normally developed is determined by thisformula: Deadweight Tester Pressure =		 Mass of weights plus piston mass		 Effective area of piston and cylinder
			 P = (M-ph) g			
A gs
P = pressure
M = mass of the load on the piston
A = effective area of the piston in sq. inches, or sq. cm
g/gs = ratio of the value (g) of gravity at the point of use to		 the standard value of gravity (gs)P = density of liquid used in testh= difference in level between gauge being tested, and		 the bottom of the piston
The deadweight tester is capable of measuring pressures
to proper corrections after analyzing these factors.

If additional gauges are to be tested, close the releasevalve when the pressure reaches zero. This will prevent
complete drainage of oil in the tester back to the reservoir.
Unseal the gauge that has been tested by unscrewing adapter nut (62) from connector (60) several turns.
Unscrew the gauge from bushing (59) if used, or connector (60), and remove.
Remove the test gauge in the same manner as the gauge
under test.
3.5.5 To Dismantle
To replace test pump in case, remove gauges and bothtube assemblies. Put shipping plugs into pump and tighten.
Close filler plug (35).
3.5.6 Operating Fluids
Standard Test Pump:
Any medium weight oil may be used (including automotive
oils S.A.E 10, 20 or 30) S.A.E. 20-W recommended.
Hydraulic Test Pump:
Any hydraulic fluid (silicate or phosphate base). Skydrol or
Pydraul is suitable.
Oxygen Test Pump:
Distilled or demineralized water with a compatible corrosion inhibitor added. A .1% solution of sodium dichromate
is a suitable inhibitor.
For normal operation it is not necessary to change theweight of oil for various pressures. A lighter oil may be
used where low pressures are being checked, a heavier
oil where higher pressures are being tested.
11 of 20

4.2 Gravity, Calibrated Weights
Weights furnished are calibrated at standard gravity of
980.665 gals. If precise accuracy is required, the error
introduced by change of weight due to change in gravity at
the locality should be calculated and included in results.
The mechanism of an Ashcroft Pressure Gauge includes
a Bourdon tube and geared movement, which is unaffected by variations in gravity. Conversely, the pressure developed by a deadweight tester is proportional to the valueof gravity. Readings of this type pressure gauge will correspond to those of a deadweight tester when the tester
is subjected to standard gravity (gs = 980.665 gals. in theInternational System). In southern sections of the UnitedStates, the value of gravity may be several thousandths
less than the standard value, if the latitude (Ø) and theelevation above sea level (a) for an area are known, theapproximate value of (g) in gals. may be calculated fromthis formula:g = 980.632-2.586 COS 2Ø
+.003 COS 4Ø - .000094a
Ø = Latitude (Degrees)a = Elevation above sea level (ft)
4.3 Effective Measured Area: Chamber
The effective area of the deadweight tester may be determined by the average of the cross sectional area ofthe piston and the area of the cylinder bore. This effective
area is affected somewhat by temperature, and by theelastic distortion of the piston and cylinder when pressure
is being applied. The effective area of a stainless steel
piston and cylinder increases approximately .068% witha 50 degree F (28 degree C) change in temperature. The­pressure will, therefore be less than indicated at high­temperatures.
4.4 Mass, Height, and Buoyancy
The density of air at room temperature and sea levelpressure is about 0.0012 grams/c.c., and the mass of thepiston assembly and weights under these conditions will
be reduced by about one part in 7,000 or .014%. Whenthe submerged part of the piston has a uniform crosssection, as with the 1305D Deadweight Tester, a buoyancy
correction is not necessary. In other designs, the piston issometimes enlarged to provide a stop for its upward motion or for increased strength. If these enlargements aresubmerged in liquid, a buoyancy correction is necessary.
4.5 Absence of Friction
By rotating the weights and piston, friction effects are
greatly reduced.
4.6 Head of Transmitting Fluid
Oftentimes, the gauge being tested, or the point at whichpressure is being measured, is not at the same level as
the lower end of the piston. A correction, therefore, should
be made for the pressure distance between these points;
the height is considered positive when the gauge is above
the piston. When oil is used in the gauge tester, the correction will be approximately 0.03 psi (.2 kPa) for eachinch (2.54 cm) difference in level.
4.7 Method of Operation
It is important that the piston be kept floating in mid-position, either spinning or oscillating.
4.8 Levelness
The piston assembly should be vertical to within ±1 degree. A 3 degree tilt to piston axis may cause a .13% of
1% error. The deadweight tester is manufactured andtested to 1/10th of 1% accuracy, to this degree of levelness. A tilt piston/cylinder axis causes excessive friction,
due to side loading of the piston against the cylinder.
4.9 Cleanliness
The weights have been manufactured and tested to a
precision of 0.05%. A buildup of dirt and grease may
cause the weight value to exceed its original tolerance and­produce erroneous pressure readings.
Periodically clean the weights to assure proper­performance.
5.0 MAINTENANCE INSTRUCTION
5.1 General Maintenance
The Deadweight tester and test pump are designed toserve as precise pressure measuring standards. They are
precision built units and should be cared for in the samemanner as other sensitive laboratory equipment. Generalmaintenance is limited to cleaning and replacement ofO-ring packings, which can be done with tools suppliedwith the equipment and requires only limited disassemblyof the gauge tester.
The piston supporting the weight platform has been manufactured to very close tolerances. It has an area accuracyof 1/20th of 1% and a weight accuracy of 1/20th of 1%.
The deadweights have been certified traceable to N.I.S.T.
with the accuracy of the finished weights better than
1/20th of 1%. To maintain deadweight tester accuracy,
handle the weights with care and keep the piston and cylinder in clean condition.
The tester should be flushed with a solvent occasionally,
preferably every six months, so that operating fluid is al12 of 20

ways clean. This will prolong component life, and provide
protection against possible sticky action between thepiston and cylinder. After cleaning, always lubricate parts
before assembly.
If a deadweight tester is not used for long periods of time,or if a piston and cylinder assembly is being replaced, thepiston should be removed from the cylinder and coatedwith the hydraulic fluid, so that it never operates in a dry
state. When removing or replacing the piston, it should be
rotated back and forth.
Should a piston or cylinder wear excessively, the tester willleak oil at a high rate, and will not be operable. A new piston and cylinder assembly should be installed.
Piston wear will result from improper or contaminatedlubrication, excessive dirt, or from several years of­continuous use.
5.2 Cleaning
Both the Tester and Test Pump should be cleaned thoroughly whenever the operating fluid is seriously contaminated with dirt, grit, or chemicals. A good practice is toclean the test unit prior to anticipated periods when theunit will not be in use.
5.3 To Disassemble for Cleaning(See Figure 2-1, Figure 2-2 and Figure 5-1)
It is necessary to disassemble only those components
which come in contact with the operating fluid. Complete
disassembly is rarely necessary.
a. Remove pipe extension assembly (58) or piston and		 cylinder assembly(67) and (79).
b.	Then remove lower or back connection pipe assembly(64, 66).
5.4 Removing Pump Handle and Pistona. Remove four retaining rings (8).
b. Slide out two clevis pins (9).
c. Remove clevis (10).
d. Lift hand assembly (4) with piston pin (7) piston (20)		 O-ring packing (12, 19) and back-up ring (11)		 attached to it, out of piston sleeve (6).
e. Remove back-up washers (18, 11) and O-ring packing
		 (12, 19).
f. Unscrew piston (20)g. Remove piston sleeve (6) and O-ring packing (45, 16)		 and back-up washers (46, 17)
5.5 Removing Reservoir and Fill Tubea. Unscrew filler plug (35) from reservoir.
b. Remove gasket (36).
c. Remove reservoir (5) by removing three screws (24).
d. Twist reservoir to free O-ring packing (21) seat.
e. Remove O-ring packing (21) from body (2).
f. Remove fill tube assembly (23) and O-ring packing (27).
g. Remove plug (22).
5.6 Removing Shuttle Valve, Shuttle Valve Plug		 and Check Valvea. Remove set screw (33) and spring (32).
b. Slide shuttle valve piston (31) out of body (2). Operate		 back and forth as necessary to dislodge pin (31)		engagement.
c. Remove shuttle pin (31) by pushing it into the shuttle		 valve piston cavity using a plastic shaft less than 1⁄8		 inch (3mm) in diameter.
d. Unscrew shuttle valve plug (43) and remove O-ring		 packing (27).
e. Remove check valve spring (14) and check valve (44).
f. Remove O-ring packing (15) from check valve (44).

5.7 Removing Bleeder Valve and Check Valve Assembly
a. Unscrew bleeder valve (51)b. Unscrew bleed plug (50) and remove O-ring packing
		(27).
c. Remove valve spacer (29) check valve spring (14)		 and check valve (44).
d. Remove O-ring (15) from check valve (44).
5.8 Removing High Pressure Check Valvea. Unscrew plug (28) and remove O-ring packing (27).
b. Unscrew adjusting screw (26).
c. Remove guide rod (13), check valve spring (14), and		 check valve (44).
d. Remove O-ring packing (15) from check valve (44).
5.9 Removing Release Valvea. Remove release valve assembly (37) and O-ring		 packing (27)b. Disassemble valve assembly by rotating handle
		 counter-clockwise until valve stem is free from valve
		body.
c. Remove O-ring packing from valve stem.
d. Remove screw (38) and seal (39) by turning counter		clockwise.
e. Remove O-ring packing (40).
5.10 Removing Displacement Valvea. Remove displacement valve assembly (41).
b. Remove O-ring packing (27).
c. Remove handle from stem by rotating handle counter		 clockwise. This is not required for normal cleaning.
d. Rotate the stem clockwise (using screwdriver in the		 slot at the top of the stem) until it is free from body.
e. Remove nut back-up washers and ring packing from		stem.
5.11 Stem Body from Drip Pan
a. Take out three bolts (25). This is not required for		 normal cleaning.
b.	Remove body assembly (2) from drip pan (3). This is
not required for normal cleaning.

vent sticking and tearing during assembly and tighteningof connection.
5.14 To Reassemble
Body assembly on drip pans.
Replace body assembly (2) on drip pan (3) using bolts(25).
5.15 Replacing Displacement Valvea. Place O-ring packing between back-up washers.
b. Attach back-up washers and O-ring packing to dis		 placement valve stem with nut.
c. Thread stem into body from the bottom – use screw
		 driver in the slot at top of stem.
d. Screw stem through body until the back-up washers,		 and O-ring packing are fully enclosed in the body.
		 CAUTION: Do not damage O-ring packing when		 threading stem through body.
e. Screw handle onto stem.
f. Replace displacement valve assembly (41) with
		 O-ring packing (27) in body assembly (2).
5.16 Replacing Release Valvea. Place O-ring packing (40) in body casting (2) hole.
b. Insert seat (39) into body casting hole.
c. Thread & tighten screw (38) into body casting hole.
		 CAUTION: Be sure that stem of seat (39) fits into		 screw hole.
d. Place O-ring packing on valve stem.
e. Screw handle onto valve stem.
f. Screw valve stem into body until end of stem does not		 extend beyond valve body.
		 CAUTION: Do not damage O-ring packing when		 threading valve stem through valve body.
g. Replace O-ring packing (27).
h. Replace release valve assembly (37) in body		 assembly (2).
5.17 Replacing High Pressure Check Valvea. Place O-ring packing (15) on check valve (44).
b. Slide check valve (44), check valve spring (14), and		 guide rod (13) into body assembly (2).
c. Replace adjusting screw (26) and screw it in until it		stops.
d. Then turn (26) back two complete revolutions.
e. R
 eplace plug (28) with O-ring packing (27) in bodyassembly (2).

5.12 Inspection
Visually inspect these parts for wear, damage, chips,
cracks and stripped threads:
		 Body Assembly Threads
		Piston
		 Piston Sleeve (6)		 Displacement Stem and Mating Surface in Body
		 Back-up Washers
		 Moving O-ring Packings
		 Dead Weights
		 Piston and Cylinder Assembly – 1305D
		 Test Gauges – 1327D
Back-up washers must fit snugly into piston sleeve andinto displacement valve body. Then check static (non-moving) packing for pinch marks, tearing or extrusion. Check
all valve seats for scratches and roughness.
Replace all worn or damaged parts. Replace all O-ringpackings at each overhaul. Coat O-ring packings withsuitable lubricant before replacing, to prevent sticking andtearing during assembly and tightening of connections.
5.13 Reassembly
When reassembling, use where possible the wrenches
supplied with the equipment. These wrenches permit
enough leverage to seal all connections. Excessive tightening of parts with tools other than those supplied may
cause distortion and eventual failure of threaded portionsof the tester body assembly casting. When replacing
O-ring packings, coat them with suitable lubricant to pre-5.18 Replacing Bleeder Valve and Check
		 Valve Assembly
a. Replace O-ring packing (15) on check valve (44).
b. Slide check valve (44), check valve spring (14) and		 valve space (29) into body assembly (2).
c.	Replace bleed plug (50) with O-ring packing (27) into
body assembly (2).
5.19 Replacing Shuttle Valve, Shuttle Valve Plug and		 Check Valvea. Insert shuttle valve piston (3) into body (2).
b. Slide shuttle pin (31) into 1/8 inch (3mm) diameter		 opening adjacent to fill tube (23) port. Apply slight		 inserting pressure to shuttle pin (31) with plastic shaft
		 and operating shuttle valve (30) to insure proper		 pin engagement.
c. Replace spring (32) directly behind shuttle pin (31)		 and secure with set screw (33). Set screw must be		 recessed by .050 inch (12mm) minimum.
d. Replace O-ring packing (15) on check valve (44).
e. S
 lide check valve (44) and check valve spring (14)into body assembly (2).
5.20 Replacing Reservoir and Fill Tube

13 of 20

Figure 2-2 Ashcroft Portable Test Pump – Type 1327D

14 of 20

a. Replace plug (22).
b. Replace fill tube assembly (21) and O-ring packing (27).
c. Replace O-ring packing (21) on body assembly (2).
d. Replace reservoir (5) using three screws (24).
e. Replace filler plug (35) and gasket (36) on body.

Phone Number – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –

5.21 Replacing Pump Handle and Pistona. Replace piston sleeve (6) and O-ring packing (45, 16)
and back-up washers (46, 17) in body assembly (2).
b. Place O-ring packing (12, 19) between back-up ­		 washers (18, 11)c. Attach back-up washers (18,11) and O-ring packing
		 (12, 19) to piston (20).
d. Lubricate piston and sleeve.
e. Attach assembled piston to handle assembly (4).
		 CAUTION: Do not damage O-ring packing (12, 19)		 when sliding assembled piston into piston sleeve (6).
f. Attach clevis (10) to handle assembly and to body		 assembly (2), using clevis pins (9) and retaining
		 rings (8).

Address – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –

5.22 Replacing Piston/Cylinder Assemblies
The piston/cylinder assembly for a deadweight tester
should be replaced when excessive wear is detected on
any component part. Worn piston assemblies are usually
noted by:
1. Excessive leakage of operating fluid through piston
		 assembly when under pressure.
2. Seizure of piston in cylinder.
3.	Damaged piston plate, damaged cylinder threads, or
damage to any component part that results in inferior
performance, or malfunctioning of the unit.
The piston/cylinder assembly is available as a unit only.
This assures the user of maximum accuracy in his
Ashcroft Deadweight Tester and maintains certified traceability to the N.I.S.T.
6.0 WARRANTY – SHIPPING INSTRUCTIONS –HOW TO ORDER
6.1 Warranty and Limitation of Liability
All products and parts carry a warranty against defective
material and workmanship for period of one (1) year fromdate of shipment.
A complete warranty and limitation of liability statement ismade on the standard quotation form at the time of sale.
6.2 Shipping Instructions For Return To Factory
Pack securely to prevent possible damage in shipment.
SHIP TO:
Ashcroft Inc.

		
		
		
		

250 East Main Street
Stratford, CT 06614
Phone: (203) 378-8281
Fax: (203) 385-0402

		www.ashcroft.com
		email: info@ashcroft.com
IMPORTANT – Obtain written authorization to return
instruments that have been in contact with corrosive or
hazardous materials such as mercury and radioactive
solutions.
Please furnish the following information with return of instrument:
SHIPPING INSTRUCTIONS
Company Name – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –15 of 20

FAX Number – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –Person to Contact – – – – – – – – – – – – – – – – – – – – – – – – – – – – –––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
email Address – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –Model – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –Serial Number – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –Symptoms– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

5.4 Troubleshooting Chart
		Corrective
Symptom
Case
Action		Corrective
Symptom
Case
ActionPressure does
Insufficient fluid
not build up when level in reservoir.
pumping handle.

Pump handle rises High pressure
Inspect O-ringafter pumping.
check valve O-ring and replace asworn or ruptured. necessary.

Add fluid.

Piston O-rings
worn or ruptured.

Piston plate (withdeadweights)
drops rapidly.*

Inspect O-rings
and replace asnecessary. If
O-rings are new,verify their fluid
compatibility.
Bleed port checkvalve or shuttle check valve­inoperative.

Unable to holdconstant pressure.

Inspect O-rings
and replace asnecessary.

Fill tube assembly Remove and clean
and filter plugged. fill tube assembly.
Refill reservoir
with clean fluid.
Shuttle valve
Pull shuttle valve
pushed in for small outward fromfluid displacement body.
when large fluid
displacement isrequired.
Air trapped inpump piston.

Pressure builds
up when pumping handle, but
decreases when
pumping is
stopped.

Leakage at outlet Inspect connecor gauge connec- tions and tighten
as necessary.
tions(s).

Stacked deadweights wobble
when spinningpiston plate.*

Damaged deadweights.

Check deadweights for visible
damage (bends,
dents, nicks, etc.)
and alignment.

Piston plate assembly will not
spin.*

Too heavy an oil Flush & fill unit
grade being used. with proper gradeof oil (SAE 20 or
SAE 10).
Replace piston &cylinder assembly.
Disassemble andflush complete
test unit with kerosene or alcohol.
Reassemble unit.

*These symptoms apply only to the 1305D Deadweight Testers.

Reprime pump.

High pressure
does not increase
when pumping
handle while­shuttle valve ispushed in.

Worn piston and Use a heavy
cylinder assembly. oil temporarily.
Replace piston &cylinder.

Operate pump
Rapid pump han- handle withdle strokes which smooth moderateaction.
lessen fluid flow
through the pump
piston.

Inspect O-ring andHigh pressurecheck valve O-ring replace as necesworn or ruptured. sary.
Defective pressure Hand tighten release valve.
release valve.
Inspect releasevalve seating surfaces. Replace asnecessary.
Remove releasevalve seat andinspect O-ring underneath. Replaceas ­necessary.

16 of 20

4A

17 of 20

REPLACEMENT PARTS – D SERIES – BLUE COLOR
PORTABLE DEADWEIGHT TESTER – TYPE 1305D
PORTABLE TEST PUMP – TYPE 1327D
		 Qty.		
Item
Per		
No.
Asmy.
Part No.

2
3
4
4A
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
37a
37b
37c
38
39
40
41
41a
41 b
41c
41d
41e
42
43
44
45
46
50
51
52
58

1
1
1
1
1
1
1
4
2
1
1
1
1
3
4
1
1
1
2
1
1
1
1
3
3
1
6
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
2
1
1
1
2
1
1
1
1
3
1
1
1
1
1
1

603D001-01
603D009-01
603X010-01
636X003-01
LF341A
610C001-01
LA810A
BA221L
LB810ALD278A
607A002-02
607A001-02
LB802
LA242
SSSS882
607A001-03
607A002-03
607A002-01
607A001-01
614C001-01
BA122R
604A003-01
615B001-01
605A002-06
SAFH37
LK260A
BA122V
LK696A—
614B002-01
609A001-01
612B001-01
605A001-01
LP696
604B002-01
607A003-01
LAH292C
328A105-01
LD870B
LAH292A
LD83A
LD911A
BA122ULAG292C
328A105-02
LE83
LB122
LB870A
LAG292A
LA521A
604B001-01
609B003-01
BA122W
607A002-04
604B004-01
609B004-01
LEE236
LK227

		 Qty.		
Item
Per		
No.
Asmy.
Part No.

Description

Body Only, Pump
Drip Pan
HandleGrip
Reservoir
Sleeve, Piston
Pin, Piston
Retaining Ring
Pin, Clevis
ClevisBackup Ring
“O” Ring
Guide RodSpring, Valve“O” Ring“O” Ring
Backup Ring
Backup Ring
“O” Ring
Piston, Dual Diameter“O” Ring
Plug
Fill Tube Assembly
Screw, Round HeadScrew, Allen Socket Head
Adjusting Screw“O” Ring
Plug
Spacer, Valve, Use Item 50
Piston, ShuttlePin, Shuttle
Spring, Shuttle Pin
Set Screw
Plug, Shipping
Plug, Fill
Gasket, Fill Plug
Valve Assembly, Release
Knob
Valve StemBody, Release Valve
Scew, Seat
Seat
“O” Ring
Valve Assembly, Displacement
Knob
Nut
Backup Washer
Stem
Body, Displacement Valve
SleevePlug, Shuttle Valve
Check Valve“O” Ring
Backup Ring
Plug, Bleed
Bleed Valve
Nameplate
Pipe Extension Assembly

59
2
60
2
61
4
62
4
63
1
64
1
65
1
66
1
67		
		1
79		
		1
82
1
83
1
		
1
		
1
		
1
		
1
		
1
2.90
15.40
92.70
1.70
1.70
8.90
1.70
19.40
68.10
15.80
1.70
162.00
4.40
13.70
2.60
165.00
14.10
50.20
88.20
13.70
5.50
1.70
187.00
14.10
13.40
1.70
41.70
111.00
19.70
59.30
49.60
1.70
2.30
36.70
27.70
4.70
180.0018 of 20

LD227A
LN141
LD186
LD117
LH227A
LJ227
LF227A
LG227A
—
LM869
–
LN869
LF217
LM141
617C002-01
617A003-01
LH244A
LH244
LG244

Unit
List
DescriptionPrice

Bushing2
9.50
Adapter
25.40
Collar
9.50
Nut, Adapter
25.20
Extension Pipe
67.00
Lower Connection Pipe Assembly
Lower Connection Pipe
104.00Back Connection Pipe
104.00
Low Pressure Piston Assembly
psig
528.00High Pressure Piston Assembly
psig
552.00Disc Seat
12.30
Adapter
37.10“O” Ring Kit, Oil
26.70
Overhaul Kit, Oil (see note 1)
180.0067.60
Wrench (1 x 11⁄8)
63.30
Wrench (7⁄8 x 1)
33.30
Wrench (5⁄8)*Piston and bushing can only be replaced as a complete assembly, thepart number for this assembly is for:1305DH – part no. 617B001-01 List Price $155.04
1305DH – part no. 617B001-02 List Price $163.83

PARTS IN THE SECTION BELOW ARE USED IN
HYDRAULIC SERVICE UNITS. THESE UNITS CAN BE­RECOGNIZED BY THE INCLUSION OF THE LETTER “H”
IN THE MODEL DESIGNATION.
12
15
16
19
21
27
37
40
41
45
		
		
		

1
4
1
2
1
6
1
2
1
1
1
1
1

607A004-02
BA122H
607A004-03
607A004-01
BA122E
BA122D
LAH292D
BA122G
LAG292D
BA122F
LGG236A
617C002-02
617A003-02“O” Ring
2.10“O” Ring
2.60
2.10“O” Ring“O” Ring
2.60“O” Ring
4.20“O” Ring
2.50
Valve Assembly, Release
165.00“O” Ring
2.10
Valve Assembly, Displacement 191.00“O” Ring
5.00
Nameplate, Hydraulic
7.50“O” Ring Kit, Hydraulic
41.10
Overhaul Kit, Hydraulic (see note 1)

1 Overhaul kit includes all O-rings required to overhaul pump aswell as piston and bushing assembly.

PARTS IN THE SECTION BELOW ARE USED IN OXYGEN(DISTILLED WATER) SERVICE UNITS WHICH ARE
IDENTIFIED BY THE INCLUSION OF THE LETTER “O” IN
THE MODEL DESIGNATION.
47
58
59
60
61
62
64
83

1
1
3
3
6
6
1
1

LKK236
LK227A
LD227B
LN141ALD186A
LD117A
LJ227A
LM141A

Oxygen Warning Label
2.40
Pipe Extension Assembly
252.00Bushing
36.40
35.30
Adapter
Collar
12.50
Nut, Adapter
34.70
Lower Connection, Pipe Assembly
75.90
AdapterAVAILABLE WEIGHTS & WEIGHT SETS
INDIVIDUAL WEIGHTS	  Part		                  Pressure Range     Number

Units

Low

High

LF199DLPF462
LAZ199D
LAZ199LAZ199A
LAZ199B
LAZ199C

psig
psig
psig
psig
psig
psig
psig

1
2
5
10
20
40
100

5
10
25
50
100
200
500

PSI WEIGHT SETS
		
		
Part
Number			  Number of Weights
Weight Set
	        	by High Pressure Value
with
Carrying
25
50
100
200
Case
psi
psi
psi
psi

500
psi

LBH199C	 1000 psi

1

3

2

3

–

LBH199B	 2000 psi

1

3

2

3

2

LBH199A	 3000 psi

1

3

2

3

4

LBH199*	 5000 psi

1

3

2

3

8

5000 to10000 psi

–

–

–

–

10

		LBH199D*For complete 10,000 psi weight set, order both part no. LBH199 and LBH199D.

19 of 20

Ashcroft Inc.250 East Main Street
Stratford, CT 06614-5145 U.S.A.
Tel: 203-378-8281
email: info@ashcroft.com
www.ashcroft.com
All specifications are subject to change without notice.
All sales subject to standard terms and conditions.
©Ashcroft Inc. I&M002-10095_RevF_(250-1526)_09-20-22

20 of 20