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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Jul 2014 Posts: 19 'Bolter | | 'Bolter Joined: Jul 2014 Posts: 19 | Hey guys,
I pulled the original wiper motor out of my 1957 GMC, took it apart, greased/lubricated everything & put it back together. I then reinstalled it & hooked it up to the fuse box with the one hit wire coming out of the motor. It's a 12v motor & a 12v system, but it keeps blowing fuses. I was finally able to get it to stay on after instilling a 25amp fuse, but then after running it for s few min it is super hot. So I took the fuse out to let it cool & to prevent my truck from self igniting. Does anybody know why this is happening. Is it a bad motor. Do I need some type of voltage reducer inline. Is there something I can do to correct this. I know it would be easier to just buy a new one, but I'm on a tight budget & I like to fix old things & keep them working. Any help will be greatly appreciated. Thanks in advance.
Josh
| | | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | obviously something is bad, either electrically in the actual motor, or mechanically, causing extreme loading on the poor thing .... no voltage reducer, should be 12V if factory original .... I'd suggest running the motor out of the truck to see if it draws too many amps and if it gets hot - if so, time for a new motor
Bill
| | | | | Joined: Jul 2014 Posts: 19 'Bolter | | 'Bolter Joined: Jul 2014 Posts: 19 | I pulled the motor & opened it up. I don't see any frayed wires. The hrushes do seem a little worn. Where can I get brushes for this motor? Any other suggestions?
Thanks | | | | | Joined: Jul 2014 Posts: 19 'Bolter | | 'Bolter Joined: Jul 2014 Posts: 19 | How do I test the amps & how many Amps should there be. Sorry not the best with electrical. I do have a voltage meter. Just need to know what setting & how many Amps & where to test the leads.
Thanks | | | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | need to consult an auto electric shop about brushes ... if the amp rating isn't on a tag on the motor, it may be in the shop manual, 25 sounds very high to me, and "super hot" is too many Bill | | |
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