| Malfunction (Symptoms) |
Probable Cause |
Corrective Action (Remedies) |
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| Wiper operates but washer does not spray fluid |
Fluid reservoir empty |
Replenish |
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Fluid distribution line disconnected from reservoir |
Connect fluid line |
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Pump motor defective |
Replace |
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| Wiper arm will not move with control switch positioned to right Full speed |
6 amp circuit breaker in switch open due to overloaded wiper motor |
"Turn off switch and check wiper arm for obstructions (ice or foreign objects lodged between arm and recess area or forward panel); remove obstruction |
allow motor to cool |
then recycle switch to Full speed" |
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| Wiper operates intermittently |
"Binding condition in wiper arm shaft assembly |
connecting links |
gear or shaft assembly" |
"Detach dash panel for access |
inspect and repair as required." |
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Faulty wiring connections at parking switch or brush holder assembly. |
(Same as preceding) |
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Brushes binding in holders or not seated properly |
(Same as preceding) |
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Dirty or oily motor armature commutator |
"Detatch dash panel and clean commutator |
then replace brushes." |
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| Wiper motor noisy |
Improperly seated brushes |
Detach dash panel and replace brushes |
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Excessive armature end play |
"Detach dash panel to gain access |
and readjust end play to 0.001 to 0.005 inch. Make certain that both thrust discs are in the end cap bearing bore; replace gear and shaft." |
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Lack of lubrication |
"Detach dash panel to gain access |
and lubricate" |
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Loose pole shoes |
"Detach dash panel to gain access |
and replace motor" |
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| Stripped drive gear teeth |
Wiper blades striking windshield molding during operation |
Adjust blades to park a minimum of 1-1/2 to 2 inches from molding |
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Excessive armature end play |
"Detach dash panel to gain access |
and readjust end play to 0.001 to 0.005 inch. Make certain that both thrust discs are in the end cap bearing bore; replace gear and shaft assembly." |
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