EGA-503 Spray Gun (Spray Pistol)
Operation Manual
Important：Before using this equipment, read all safety precautions and instructions.
Keep for future use.

DESCRIPTION
The EGA-503 is an external mix, touch-up gun. The gun has a long needle taper making detail work easy. The forefinger
trigger gives added control for delicate application.
Can be used for touch-up, shading, edging or any type of precision painting.
Use as either suction or pressure feed application.
Note : Wetted surfaces are stainless steel and aluminum. Please see Warning on Page 2 regarding explosion hazard.

SPECIFICATIONSAir Inlet

1/4” NPS (M)Fluid Inlet

1/4” NPS (M)Type Feed

Suction or Pressure

Wetted Parts

Aluminum & Stainless SteelP1 =Maximum Air Pressure 100 PSI (7 bar)P2 =Maximum Fluid Pressure 10 PSI (0.68 bar)

OPERATION
Prepare and strain material according to the paint manufacturer's instructions. Attach container to fluid inlet and tighten.
Adjust incoming air pressure to gun to achieve desired spray results.
Note : To minimize overspray, only use as much pressure as required to atomize material.

PREVENTIVE MAINTENANCETo clean fluid passages, remove excess material at source, then flush with a suitable solvent.
To clean air cap and fluid tip, brush with a stiff bristle brush. If necessary, use a broom straw or toothpick. Never use a wire or
hard instrument. This may scratch or burr holes causing a distorted spray pattern.
Note : Worn parts can cause fluid leakage. When replacing fluid tip or fluid needle, replace both at the same time. Lapped sets
are available. Also replace the fluid tip gasket and needle packing at this time.
Caution : To prevent damage to the fluid tip or fluid needle, be sure to either 1) push the trigger and hold while tightening thefluid tip or 2) remove the fluid needle adjusting screw to relieve spring pressure.
* Government NSN No. 4940-01-182-6975 = KK-5044

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LUBRICATION
For best results, lubricate the points indicated inFigure 1 daily using Gun Lube SSL-10.
A. Trigger points
B. Packings
C. Adjusting valves
D. Needle/Air valve springs (occasionally)

SAFETY PRECAUTIONSThis manual contains information that is important for you to know and understand. This information relates to USER SAFETY
and PREVENTING EQUIPMENT PROBLEMS. To help you recognize this information, we use the following symbols. Please
pay particular attention to these sections.
WARNING

Important safety information – a hazard that may cause serious injury or loss of life.

CAUTION

Important information that tells how to prevent damage to equipment, or how to avoid a situation that may
cause minor injury.

NOTE

Information that you should pay special attention to.

PROP 65 WARNINGWARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or otherreproductive harm.
WARNING
The following hazards may occur during the normal use of this equipment. Please read the following chart.
HAZARDFireCAUSESAFEGUARDS

Solvents and coatings can be highly 1. Adequate exhaust must be provided to keep
flammable or combustible, especiallythe air free of accumulations of flammablewhen sprayed.
vapors.
2. Smoking must never be allowed in the sprayarea.
3. Fire extinguishing equipment must bepresent in the spray area.
4. Static discharges must be prevented.
Ground(earth) all conductive objects in thespray area, such as a cleaning solvent
bucket, fire extinguisher, etc.
5. When using solvents for cleaning:• Those used for equipment flushing musthave a flash point equal to or higher thanthat of the coating.
• Those used for general cleaning musthave flash points above 100°F (37.8°C).

2

HAZARDCAUSE

SAFEGUARDS

Inhaling Toxic Substances

Certain materials may be harmful if
inhaled or if there is contact with theskin.

1. Follow the requirements of the Material
Safety Data Sheet supplied by your coating
manufacturer.
2. Adequate exhaust must be provided to keep
the air free of accumulations of toxic
materials.
3. Use a mask or respirator whenever there is achance of inhaling sprayed materials. The
mask must be compatible with the material
being sprayed and its concentration.

Explosion Hazard –Incompatible Materials

Halogenated hydrocarbon solvents,for example" methylene chloride and1, 1, 1, - Trichloroethane, are notchemically compatible with thealuminum that might be used inmany system components. The
chemical reaction caused by thesesolvents reacting with aluminum canbecome violent and lead to an
equipment explosion.

This spray gun (spray pistol) has aluminum
passages and cannot be used with thesesolvents.
Aluminum is also widely used in other spray
application equipment – such as material
pumps, regulators, valves, etc. Check all otherequipment items before use. Read the label ordata sheet for the material you intend to spray. Ifin doubt as to whether or not a coating or
cleaning material is compatible, contact yourmaterial supplier.

General Safety

Improper operation or maintenanceof equipment.

Operators should be given adequate training inthe safe use and maintenance of the equipment(in accordance with the requirements ofNFPA-33, Chapter 15 in U.S.). Users mustcomply with all local and national codes ofpractice and insurance company requirements
governing ventilation, fire precautions, operation,maintenance and housekeeping (in the U.S.,
these are OSHA Sections 1910.94 and1910.107 and NFPA-33).

Solvent Spray

During cleaning and flushing,solvents can be forcefully expelledfrom fluid and air passages. Somesolvents can cause eye injury.

Wear eye protection.

Misuse:• All spray guns (spray pistols) project particles at high velocity and must never be aimed at any part of the body.
• Never exceed the recommended safe working pressures for any of the equipment used.
• The use of non-recommended or non-original accessories or spare parts may create hazardous conditions.
• Before dismantling the equipment for cleaning or maintenance, all pressures, air and fluid, must be isolated andreleased.
The disposal of waste materials must be carried out in an approved manner. Burning may generate toxic fumes.
The removal or waste solvents and coating materials should be carried out by an authorized local waste disposal service.

3PARTS LIST
9867524341012 11 1213

14
Fluid Inlet
1/4" NPS(M)21191516

Air Inlet
1/4" NPS(M)

1720

18

21
22
23

No.

Part Number

Description

Individual Parts Req.

1 EGA-4

Packing Nut

1■2 ---Fluid Needle Packing

1

3 EGA-7Baffle1

4 EGA-4000-F

Tip, Needle & Gasket (includes 4, 5, 15)1■5 EGA-59-K5

Gasket (Kit of 5)1

6 EGA-443

Trigger and Stud Assy.

1■7 AG-3-1-K5

Trigger Bearing Stud (Kit of 5)1

8 EGA-40-390

Air Cap

19 EGA-11Retaining Ring

110 EGA-454

Fan Adjusting Assembly

1■11 SSG-8205-K10

O-Ring (Kit of 10)1■12 AG-26-K10

Washer (Kit of 10)

1■13 ---Spring1

14 EGA-3

Packing Gland1

15 ---

Fluid Needle (included with Item 4)

1■16 AG-7-K5

Needle Spring Kit (Kit of 5)

1

17 AG-16

Fluid Needle Adjusting Screw

1

18 EGA-441

Air Valve Assy.

1

19 AG-46-K3

Lock Nut (Kit of 3)

1■20 EGA-9-K5

Stem (Kit of 5)

1■21 SST-3008-K5Ball (Kit of 5)

1■22 C-104-K5

Spring (Kit of 5)1

23 GD-36-K5

Spring Retainer (Kit of 5)1■24 EGA-5-K6

Air Valve Plunger (Kit of 6)

1■A quantity of necessary parts is included in Gun Repair Kit KK-5044. Government NSN No. 4940-01-182-6975 = KK-5044.
Suffixes -K3, -K5, etc. designates kits of multiple parts. Example: EGA-59-K5 is a kit of (5) gaskets.

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TROUBLESHOOTING
problem

Cause

Correction

Heavy top or bottompattern Horn holes plugged.
 Obstruction on top or bottom of fluid tip.
 Cap and/or tip seat dirty.

 Clean. Ream with non-metallic point.
 Clean.
 Clean.

Heavy right or left sidepattern Left or right side horn holes plugged.
 Dirt on left or right side of fluid tip.

 Clean. Ream with non-metallic point.
 Clean.

Remedies for top-heavy, bottom-heavy, right-heavy and left-heavy patterns:
1) Determine if obstruction is on cap or fluid tip. Do this by making a test pattern. Then, rotate cap
one-half turn and spray another pattern. If defect is inverted, obstruction is on air cap. Clean aircap as previously instructed.
2) If defect is not inverted, it is on fluid tip. Check for a fine burr on edge of fluid tip. Remove with#600 wet or dry sand paper.
3) Check for dried material just inside opening. Remove by cleaning.
Heavy center pattern

 Material flow exceeds air cap’s capacity.
 Atomizing pressure too low.
 Material too thick.

 Thin or lower fluid flow.
 Increase pressure.
 Thin to proper consistency.

Split spray pattern Fluid adjusting knob turned in too far.
 Insufficient material flow.
 Atomization air pressure too high.
 Too much fan air.

 Back out counterclockwise to achieve properflow.
 Increase fluid pressure (pressure feed).
 Reduce air pressure.
 Turn fan adjust in to reduce.

Jerky or fluttering spray Loose or damaged fluid tip/seat.* Material level too low.
 Container tipped too far.
 Obstruction in fluid passage.
 Loose or broken fluid tube or fluid inlet nipple.
 Dry or loose needle packing nut.

 Tighten or replace.
 Refill.
 Hold more upright.
 Clean.
 Tighten or replace.
 Lubricate or tighten.

Will not spray No air pressure at gun.
 Needle adjusting screw not open enough.

 Check air supply and air lines.
 Open needle adjusting screw.

Excessive overspray(spray mist)

 Too much atomization air pressure.
 Reduce pressure.
 Gun too far from work surface.
 Adjust to proper distance.
 Improper stroking (arching, gun motion too fast).  Move at moderate pace, parallel to work
surface.

Dry Spray Air pressure too high.
 Gun tip too far from work surface.
 Gun motion too fast.
 Gun out of adjustment.

 Decrease air pressure.
 Adjust to proper distance.
 Slow down.
 Adjust.

Fluid leaking frompacking nut

 Packing nut loose.
 Packing worn or dry.

 Tighten, do not bind needle.
 Replace or lubricate.

Fluid leaking or drippingfrom front of gun

 Foreign matter in tip.* Packing nut too tight.
 Dry packing.
 Fluid tip or needle worn or damaged.
 Needle spring deformed or broken.

 Clean.
 Adjust.
 Lubricate.
 Replace tip & needle with lapped set.
 Replace.

Runs and sags

 Too much material flow.
 Material too thin.
 Gun tilted on an angle.

 Adjust gun or reduce fluid pressure.
 Mix properly or apply light coats.
 Hold gun at right angle to work and adapt toproper gun technique.

5

problemThin, sandy coarse
finish, drying before it
flows out

Cause

Correction

 Gun too far from surface.

 Check distance. Normally 6-8" (152-203mm).
 Reduce air pressure and check spraypattern.
 Follow paint mfg's mixing instructions.

 Too much air pressure.
 Improper thinner being used.

 Surface rough, oily, dirty.

 Check distance. Normally 6-8" (152-203mm).
 Increase air pressure or reduce fluidpressure.
 Follow paint manufacturer’s mixing
instructions.
 Follow paint manufacturer’s mixing
instructions.
 Properly clean and prepare.

Excessive fog

 Too much, or too fast-drying thinner.
 Too much atomization air pressure.

 Remix properly.
 Reduce pressure.

Unable to get roundspray Fan adjustment screw not seating right.
 Air cap retaining ring (nut) loose.

 Clean or replace.
 Tighten.

Thick, dimpled finish“orange peel”
Too much material
coarsely atomized

 Gun too close to surface.
 Air pressure too low or too much material.
 Improper thinner being used.
 Material not properly mixed.

* Most common problem.

6

ACCESSORIESPart No.

Description

P-H-5516 AIR ADJUSTING
VALVE

Enables user to control and reduce air usage at the gun.
Ideal for low pressure spraying.

42884-214-K5 3/8"
42884-215-K10 5/8"
CLEANING BRUSHES

These brushes are helpful in cleaning threads and recessesof gun body. Available in U.S. only.

WR-103 WRENCH

Contains all necessary tip, hose and nut sizes used on orwith gun. Available in U.S. only.

TGS-503 Cup

8 ounce (240 ml) polyethylene suction cup.

GUN LUBE, SSL-10-K122 oz. (60 m) bottle

Compatible with all paint materials: contains no silicone orpetroleum distillates to contaminate paint.

HAV-500 or HAV-501
Air Adjusting Valve(HAV-501 shown)

HAV-500 does not have pressure gauge. Use to control air
usage at gun

HARG-510 Air Regulator

Use to maintain nearly constant outlet pressure despitechanges in inlet pressure and downstream flow.

Millennium 3000 Twin Cartridge
Paint Spray Respirator

NIOSH-Certified, for respiratory protection in atmospheres
not immediately dangerous to life.

192212 Professional Spray Gun Contains six precision tools designed to effectively clean all
Cleaning Kit
DeVilbiss, Finishline and other brand spray guns.

192218 Scrubs®
Hand Cleaner Towels(Automotive Refinish)

Scrubs® are a pre-moistened hand cleaner towel forpainters. No water is needed.

29-3100 Scrubs® Hand CleanerTowels (Industrial Finishing)
KK-5060 Air Cap Cleaning Kit

Consists of: 2 brushes, 1 wire pick. Helps keep air cap
clean and performing properly.

DIVISIONRansburg Japan KK
HP http://www.carlisleft.co.jp®DEVILBISS is a registered trademark of Carlisle Fluid Technologies.
®Jupiter is a registered trademark of CFT Ransburg Japan KK.

©2017 Carlisle Fluid Technologies.
2017-07-EGA-503

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