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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: Nov 2005 Posts: 49 Wrench Fetcher | | Wrench Fetcher Joined: Nov 2005 Posts: 49 | Since the wipers did not work when I purchased my truck, I don't know how they are supposed to work, other than running on engine vacuum. What do the two controls do on each motor do? One pulls in and out and the other screws in and out.
Thank-you,
Brian | | | | | Joined: Jul 2005 Posts: 308 'Bolter | | 'Bolter Joined: Jul 2005 Posts: 308 | I may be wrong but it seems on my 46 the one you pull turns on the wiper and the turn adjusts the speed. I am not sure if mine work as they should, when I give the truck gas they slow down and when I let off the gas they start working again.
Ed | | | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | yer right Ed, pull on, turn to slow down, but just pushing the gas accomplishes that faster  because when you step on the gas the engine vacuum decreases - you can improve that behavior some by getting the fuel pump that has the vacuum assist pump on it Brian - if yer's don't work at all you need to at least open the wiper motor and clean it out, and then grease the leather flap you find in there to help it seal and stay supple - may need to get it rebuilt Bill | | | | | Joined: Jul 2005 Posts: 308 'Bolter | | 'Bolter Joined: Jul 2005 Posts: 308 | Red58
Thanks for the tip.
Ed | | | | | Joined: Nov 2005 Posts: 49 Wrench Fetcher | | Wrench Fetcher Joined: Nov 2005 Posts: 49 | Thanks guys. I took the one motor apart and it was all gunked up, along with causing a significant engine vacuum leak because of a loose inlet tube. No wonder the engine ran better with the choke partially on.
Brian | | | | | Joined: Jul 2005 Posts: 1,158 Shop Shark | | Shop Shark Joined: Jul 2005 Posts: 1,158 | Bill:
What kind of grease do you use on that wiper motor leather flap?
-Brendan | | | | | Joined: Jul 2005 Posts: 2,031 Shop Shark | | Shop Shark Joined: Jul 2005 Posts: 2,031 | install a sealed coffee can w/ two small tubes soldered in situ. this helps w/ more vacuum volumn
Jim & Caroline
The highway is for gamblers, better use your good sense."
Gooday-that's my 1¢ answer due to the lousy economy ~ cause I ain't got - no . mo . doe
Every Shaver | Now Can Snore | Six More Minutes | Than Before ... | Half A Pound for Half a Dollar | Spread On Thin | Above the Collar || BURMA-SHAVE
| | | | | Joined: Mar 2005 Posts: 170 Member | | Member Joined: Mar 2005 Posts: 170 | How do you remove the wiper motor? Is it just the big nut around the wiper shaft? My '40 GMC needs some attention too.
Steve | | | | | Joined: Feb 2000 Posts: 5,205 'Bolter | | 'Bolter Joined: Feb 2000 Posts: 5,205 | Some where I read vasoline works pretty well, but I used motor oil so soften the leather seals, then went back with white lithiom grease, its pretty oily grease and seemed to work ok. Joe | | | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | yes on the white grease as Joe sez Steve - yes the bezel nut is what holds the early ones on, with a little doober inside to hold the motor in the right position and keep from turning you guys w/ vacuum motors should consider using the wipermans service - he bought out all the remaining stock from TRICO years ago and really does a good number on'em - work like new for ages after Bill | | | | | Joined: Apr 2005 Posts: 2,832 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 2,832 | If you send your wiper motor off to David Ficken, "the wiper man", you will not believe how much better it works. He's slightly higher than some others but will keep on the promised delivery schedule. Most of the vehicles we do just use the wiper once a year to pass state inspection but, if they actually use them we put an electric vacuum pump in them. It's compact so will fit most anywhere and makes vacuum wipers super since they are infinitely speed adjustable. These pumps are pricey new but so many new cars are having them, especially diesels, that used ones are getting reasonable.
Evan
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