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| | | Joined: Oct 2016 Posts: 496 Shop Shark | | Shop Shark Joined: Oct 2016 Posts: 496 | I know they're not electrical but I am trying to use my original vac wiper system. I order the "improved" wiper arms from classic parts. Everything works fine until I put the arms and wipers on. Nothing moves. It seems like the springs in the new arms are holding it too tight against the glass....or my motor is not strong enough. Any body else experience this?
1950 SUBURBAN / SCHOOL BUS A.K.A "THE SCHOOL RUST"
| | | | | Joined: Jan 2006 Posts: 29 'Bolter | | 'Bolter Joined: Jan 2006 Posts: 29 | Take your motor apart and clean it up then lube the seals with a vaseline | | | | | Joined: Feb 2004 Posts: 29,771 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,771 | Most vacuum wiper motors have a tubing nipple that is open to the atmosphere where air is drawn into the housing by manifold vacuum. Attach a piece of tubing to that port and submerge it into a bottle of gas treatment or fuel injector cleaner. As the liquid gets pulled through the motor it cleans and lubricates the flapper that operates the wiper arms. It's simpler and easier than dismantling the vacuum motor, and then the solvent cleans the valve guides as it gets pulled through the manifold and cylinder head.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
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| | | | | Joined: Feb 2019 Posts: 4,475 AD Addict & Tinkerer | | AD Addict & Tinkerer Joined: Feb 2019 Posts: 4,475 | I recently went thru the same dilemma. Using a vacuum cleaner to operate the wiper motor it only operated in one direction. I soaked the internals of the motor overnight in brake fluid. I got it to operate in both directions but it was easy to stop by hand. The gasket that seals the cover to the body are paper thin. I figured the chances of getting the motor open without ripping the sixty seven year old gasket were slim and rebuild kits are not available. I ended up sending it out to Ficken Wiper Repair https://rebuildingtricowipers.com, aka “Wiperman”, and and it’s real strong. I payed $135 shipped with a 1 week turnaround. A dry windshield won’t stop it! Highly Recommended!
Last edited by Phak1; 08/25/2019 1:44 PM.
Phil Moderator, The Engine Shop, Interiors and Project Journals1952 Chevrolet 3100, Three on the Tree, 4:11 torque tube Updated to: ‘59 235 w/hydraulic lifters, 12v w/alternator, HEI, PCV and Power front Disc BrakesProject JournalsStovebolt Gallery Forum | | | | | Joined: Oct 2016 Posts: 496 Shop Shark | | Shop Shark Joined: Oct 2016 Posts: 496 | Yeah, I've tried the fixes mentioned above. Looks like I'll have to contact the wiperman. Thank you for posting the price. I was curious about that.
1950 SUBURBAN / SCHOOL BUS A.K.A "THE SCHOOL RUST"
| | | | | Joined: Feb 2019 Posts: 4,475 AD Addict & Tinkerer | | AD Addict & Tinkerer Joined: Feb 2019 Posts: 4,475 | Send him a email posted on his website. He’s pretty quick to respond.
Phil Moderator, The Engine Shop, Interiors and Project Journals1952 Chevrolet 3100, Three on the Tree, 4:11 torque tube Updated to: ‘59 235 w/hydraulic lifters, 12v w/alternator, HEI, PCV and Power front Disc BrakesProject JournalsStovebolt Gallery Forum | | | | | Joined: Mar 2010 Posts: 10,272 Renaissance Man | | Renaissance Man Joined: Mar 2010 Posts: 10,272 | Do these "improved" wiper arms address the too strong springs issue?
Did you test your wipers with a wet windshield?
1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission
| | | | | Joined: Oct 2016 Posts: 496 Shop Shark | | Shop Shark Joined: Oct 2016 Posts: 496 | I originally thought the spring was too tight so I sprung the spring to relieve some pressure. Still didn't work. Then sprayed my windshield with windex and one side would run. When I put both arms on, it was too much even with a wet windshield.
1950 SUBURBAN / SCHOOL BUS A.K.A "THE SCHOOL RUST"
| | | | | Joined: Mar 2002 Posts: 9,115 'Bolter | | 'Bolter Joined: Mar 2002 Posts: 9,115 | I found the newer arms created too much friction for my vacuum motor. I switched back to the old arms. They would work fine with the electric wiper setup. | | |
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