MRV WIPER MOTORINSTALLATION INSTRUCTIONS(ITEM #’S: 34001, 34011, 34000, 34010, 34210, 34005, 34015
38001, 38011, 38000, 38010, 38005)

The MRV heavy duty wiper motors offer both the features of self parking and ability tochange the sweep angle or degree. The two speed models also provide slow and fast
sweep options:
Slow: 32-40 sweeps a minuteFast: 52-60 sweeps a minute
Item #Sweep* Shaft Length

34000

80°

34010

110°

34001

80°

34011

110°

34005

80°

34015

110°

2-1/2" (64 mm)
1-1/2" (38 mm)
3-1/2" (89 mm)* Motors are adjusted to standard sweep angles inproduction and can be changed to other angles.

shaft length

INSTALLATION INSTRUCTIONS: MRV WIPER MOTOR
Mounting and Wiring
1) Locate proper mounting position of wiper assembly. Determine whether adequate
space is available and see that the blade will wipe the desired area of the windshield.
2) Distance between shaft hole and mounting bracket screw hole should be 6-1/4"(159 mm) - see illustration under “Changing Wiping Angle and Parking Position”.
3) Drill wiper shaft hole first, using a 5/8" (16 mm) drill bit. It may also be necessary
to slightly enlarge hole after drilling using a 1/2" round file to facilitate ease ofinstallation.
4) The mounting bracket screw hole may now be drilled. If needed, use motor as atemplate to drill a hole for the mounting bracket screw. A #10 size , stainless steel,round head screw is required (not supplied).
5) The wiper motor may now be placed in position and the wiper shaft attaching nut
and washers installed. This nut should be tightened to 30-50 in-lbs (35-58 kg-cm)
using a 3/4" open end box wrench, or adjustable wrench.
Caution: Do Not Over Tighten.
6) Attach the #10 size mounting bracket screw and fasten to about 15 in-lbs(17 kg-cm) until it is snug.
7) Wire up the motor as shown below.
NOTE: For marine applications where mounting to wood, fiberglass, etc., a separate
ground wire must be attached to the motor and conneted to a battery negative point.
NOTE: Blade and arm should be installed approximately 1" (25.4 mm) minimum awayfrom windshield at a 90° to the windshield. Energize the motor for short intervals tomake certain the wiper blade does not strike at either end of the wiping arc. If bladestrikes at both ends, it will be necessary to shorten the arm and blade length.
Wiring Schematic
5/8" Dia.
Wiper Shaft

Fast
Slow
Self Park

Battery Negative
.50"

2.00"

6.25"
Battery

Switch5A Fuse2

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Motor

INSTALLATION INSTRUCTIONS: MRV WIPER MOTOR
Change Sweep Angle and Parking
Should a change of wiping angle be necessary, It can be performed as follows(see illustration).
• Remove cover plate with a Philips (+) screw driver .
• Use a flat-head screw driver to remove “U” shape clip on the shaft that connects thetransmission plate to the main shaft.
• Lift the transmission plate.
• Unscrew the two screws fastening the angle plate to the white cog wheel. There are
two oblong holes in the cog wheel.
• If you want to change the park position, place the transmission pin in the opposite
oblong hole.
• If you want to change the sweep angle, replace the angle plate, align the holemarked with the desired sweep angle with the oblong hole on cog wheel, andreplace the angle plate screws.
• Replace transmission plate and “U” clip.
NOTE: Additional grease may be required after changing sweep angle or park position.

6-1/4"Transmission Plate“U” Clip

Transmission Pin

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3

INSTALLATION INSTRUCTIONS: MRV WIPER MOTOR

3-Position Switch:

Off/Park–Slow–Fast
Note: 12 volts applied topark terminal only whenswitch is in OFF position.

12V Battery

3-Fast10A Fuse

2-Slow
1-Park321

WARRANTY Statement
LIMITED WARRANTY
For three years from the date of purchase, Marinco will, at its discretion, repair
or replace for the original consumer, free of charge, any part or parts found upon
examination by Marinco to be defective in material or workmanship or both. Alltransportation charges under this warranty must be borne by the consumer. Proof ofpurchase is required. Proof of purchase must be a computerized receipt. Handwritten
receipts are not accepted.

Warranty Claim
Thank you for contacting Marinco regarding the product concerns as related toForm, Fit and Function. Marinco offers an online warranty (RMA) request form on ourwebsite. www.marinco.com in the resources tab. Please fill in the online form titled
Marinco Warranty Request.
For more information visit our website: www.marinco.com

marinco.com | 800.307.6702 | 20114_0115