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| | | Forums66 Topics128,119 Posts1,056,317 Members48,439 | | Most Online14,466
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!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Apr 2011 Posts: 523 Shop Shark | | Shop Shark Joined: Apr 2011 Posts: 523 | Would a small shop vac provide enough vacuum to test a wiper motor? Someone has suggested 20 inches of vacuum, but I have no way to measure that.
BobS46
| | | | | Joined: Mar 2011 Posts: 277 'Bolter | | 'Bolter Joined: Mar 2011 Posts: 277 | Not trying to sound silly but you could suck on it.
BTW Mine (from Arizona) had been in the truck since new, I just sent it out to the fellow (wiperman) in NY who rebuilt it and it works perfectly. A great deal for a little over $100 IMO
1955 First Series 3100
| | | | | Joined: Mar 2010 Posts: 10,281 Renaissance Man | | Renaissance Man Joined: Mar 2010 Posts: 10,281 | Do you have a vehicle that runs? Hook it up to a vacuum port on any engine to test it. May need a long hose if the wiper motor is still in the truck.
Carl
1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission
| | | | | Joined: Mar 2002 Posts: 9,115 'Bolter | | 'Bolter Joined: Mar 2002 Posts: 9,115 | I used our central vac and it gave about 11 inches, if I remember correctly. I found it very handy for working on the bench. | | | | | Joined: Jan 2011 Posts: 212 Shop Shark | | Shop Shark Joined: Jan 2011 Posts: 212 | Carefully dismantle and clean it...lube inside Wiper edges and Die-cast inside Body trough with a nice light coating of Vaseline...re-assemble, then 'test'... | | |
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