F 350 4WD Pickup V8-351 5.8L VIN H EFI (1997)
Wiper Motor: Testing and Inspection
Wiper Motor Current Draw Test
CAUTION: Rough handling of a windshield wiper motor during testing or servicing can damage the field magnets. If the magnets are damaged, the
wiper motor will not operate and must be replaced.
To measure wiper motor current draw, on vehicle, proceed as follows:
1. Disconnect windshield wiper mounting arm and pivot shaft from motor.
2. Disconnect wiring at wiper motor.
3. Connect green lead from Rotunda Alternator, Regulator, Battery and Starter Tester 010-00725 or equivalent to battery negative terminal.
4. Connect tester red lead to motor common brush terminal.
5. To measure low speed current draw, connect jumper wire from battery positive terminal to low speed brush terminal. Motor should operate and
current draw should not exceed 3.5 amperes.
6. To measure high speed current draw, move jumper wire to high speed brush terminal. Current draw should not exceed 5.5 amperes.
