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Joined: Apr 2016
Posts: 7
Grease Monkey
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Grease Monkey
Joined: Apr 2016
Posts: 7 |
Hello,
I own a Chevrolet Master de luxe 1937. I have the stock vacuum wipers.
I can not get my wipers to move forward and back automaticly.
If I move the switch to the left the wipers move to the left. If I move the switch to the right to wipers move to the right.
I can not find any information in the user manual.
Krister
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Joined: Jan 2002
Posts: 30,701 Likes: 141
ChatMaster - 25,000
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ChatMaster - 25,000
Joined: Jan 2002
Posts: 30,701 Likes: 141 |
The first thing to try is force some lubricant into the wiper motor. The origihal grease in the motor becomes hard after many years. This is what to do.
Remove vacuum hose from engine intake manifold. Place hose in a small container of atomatic transmission fluid. Work wipers back and forth by hand. This will suck the ATF into the wiper motor and soften the hard grease. Let stand over night and operate wipers the next day....sometimes it may be necessary to repeat the process.
If this dosen't help remover and disassemble motor, clean out old hard grease and re-grease.
Gene Schneider
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Joined: Aug 2008
Posts: 415
Backyard Mechanic
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Backyard Mechanic
Joined: Aug 2008
Posts: 415 |
Gene, when you say " re-grease " what type would you use on that?? Thanks,
_________________
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Joined: Oct 2007
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ChatMaster - 2,000
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ChatMaster - 2,000
Joined: Oct 2007
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Hi Joe,
Disassembling the wiper motor requires basic mechanical skills. Re-assembling one requires a new gasket. The gaskets are all but impossible to make and I am unaware of any suppliers. A few companies that recondition wiper motors will repair them but will not sell you the gaskets or the leather paddle that causes the suction. The paddle stiffens with age and lack of lubrication and eventually freezes in place. Follow Gene's reconditioning advice minus the disassembly.
If you do have an extra motor do take it apart so you understand what you are up against!
Good luck, Mike
P.S. Completely disregard everything I have said if the 37 wiper motor doesn't require a gasket or their is a source for gaskets.
Mike 41 Chevy
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Joined: Jan 2002
Posts: 30,701 Likes: 141
ChatMaster - 25,000
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ChatMaster - 25,000
Joined: Jan 2002
Posts: 30,701 Likes: 141 |
I have used Vasoline with good results. I take apart the new wiper motors I sell and relube them and then test them on a running engine.
Gene Schneider
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Joined: Aug 2008
Posts: 415
Backyard Mechanic
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Backyard Mechanic
Joined: Aug 2008
Posts: 415 |
Hey Mike, thanks for the advice. I have a spare wiper motor, now I'LL have to have a look-see at it. I have used Genes advice before with great success.
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ChatMaster - 2,000
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ChatMaster - 2,000
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When the wipers are running normally, they sweep to one side and a little mechanical arm causes a reversing valve to cause the motor to return. It is a tiny valve and if it hangs up, it will produce your symptoms. I bought an NOS unit a while ago and it had the same problem. I didn't take it all apart, I only lubed up the valve.
My 1951 1 Ton is now on the road! My 38 Master 4 Door is also now on the road .
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Joined: Sep 2002
Posts: 2,323 Likes: 6
ChatMaster - 2,000
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ChatMaster - 2,000
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Posts: 2,323 Likes: 6 |
Gene, did you make yourself a tool for dealing with the little square bolt heads?
My 1951 1 Ton is now on the road! My 38 Master 4 Door is also now on the road .
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Joined: Nov 2001
Posts: 19,758 Likes: 64
ChatMaster - 15,000
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ChatMaster - 15,000
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The wiper motor screws can often be removed by grasping the heads with needle-nose pliers and twisting. Don't get your fingers between the jaws because they are sure to slip numerous times. Blood blisters hurt.
How Sweet the roar of a Chevy four!
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Joined: Jan 2002
Posts: 30,701 Likes: 141
ChatMaster - 25,000
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ChatMaster - 25,000
Joined: Jan 2002
Posts: 30,701 Likes: 141 |
I have used a needle nose and/ or a very tiny open end wrench. Take a picture of the flip,flop valve for reassembly help.
Gene Schneider
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Joined: Nov 2002
Posts: 7,472 Likes: 26
ChatMaster - 7,000
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ChatMaster - 7,000
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If you check the F**d antique dealers they have a kit that includes the paddle and other small parts.
Steve D
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Joined: Dec 2001
Posts: 775
ChatMaster - 750
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ChatMaster - 750
Joined: Dec 2001
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I used the Gene method but with light machine oil. I removed the motor from the car and put the oil in the vacuum connection, then tried to move the wiper connection back and forth. After a while the motor moved smoothly and I could get it to move with a slight vacuum. I think the gasket in the motor had dried out and the oil caused it to swell back to original size so it could hold the vacuum.
Brian
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Joined: Nov 2001
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Tech Advisor ChatMaster - 25,000
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Tech Advisor ChatMaster - 25,000
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The Mangy Old Mutt
"If It's Not Junk.....It's Not Treasure!"
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Joined: May 2002
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ChatMaster - 3,000
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ChatMaster - 3,000
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I would suggest checking with the wiper man as well
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