Wiper Motor? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Lgriffin · 10-27-2004, 10:41 PM

There is a cam on the motor drive that electrical contacts ride on. That's what turns the motor off when wiper arms are in the down position. Sounds like it is malfunctioning, shorting out when you move the arms, therefore the dome light dims. As to speed it could be a problem with the cam as well. My memory fails me as to how the contacts (brushes) are setup on the cam. Replace the wiper motor and the problem should be gone.
Larry
68 C20 327/465 daily driver 4:56 och!
63 C20 292/420 Camper truck Detroit Locker 4:10 posi
65 C10 ? /powerglide Custom Cab AC,PB,PS,4xflasher

10-27-2004, 10:41 PM	#2
Lgriffin Registered User Join Date: Jan 2004 Location: Oakdale, CA Posts: 101	There is a cam on the motor drive that electrical contacts ride on. That's what turns the motor off when wiper arms are in the down position. Sounds like it is malfunctioning, shorting out when you move the arms, therefore the dome light dims. As to speed it could be a problem with the cam as well. My memory fails me as to how the contacts (brushes) are setup on the cam. Replace the wiper motor and the problem should be gone. Larry 68 C20 327/465 daily driver 4:56 och! 63 C20 292/420 Camper truck Detroit Locker 4:10 posi 65 C10 ? /powerglide Custom Cab AC,PB,PS,4xflasher Last edited by Lgriffin; 10-27-2004 at 10:44 PM.



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