Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Wiper Motor: Disassembly
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NOTE: Motor section may be disassembled independently of gear box.
Scribe reference line along side of casting and end cop to insure proper reassembly and remove two motor through bolts. Feed exposed excess length of motor leads through casting grommet and back case and field assembly, plus armature, away from casting.
NOTE: It may be necessary to remove armature end play adjusting screw and insert rod through opening to apply pressure against end of armature. - Unsolder black lead from circuit breaker and straighten out four tabs securing brush plate to field coil retainers. Install "U" shaped brush retainer clip over brush holder which has brush lead attached to circuit breaker. Hold the other brush and carefully lift brush holder off mounting tabs enough to clear armature commutator. Allow brush to move out of its holder, remove spring and lift brush holder from armature shaft.
- Lift armature from case and field assembly. If armature is being replaced, remove thrust ball from end of defective armature shaft (using a magnet) and install it in new armature. End case and field assembly is serviced as a unit. To free field and case assembly, cut solid black plastic insulation and black with pink stripe leads in a location convenient for splicing. Remove steel thrust plate and rubber disc from case bearing (as required).
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.