Got vaccum wipers on my 53 chev they worked badly when i bought the car last year, i was gonna get a rebuld kit or put electric wipers motor on it, electric was expensive and a reuilding i heard was kind of trickey. Well the guys at the filling station told me to a easy fix to do before buying a rebuidl kit 1. Remove vaccum line from engine 2. Fill vaccum port with 3/1 oil or marvel mystry oil let it sit for a few min. 3. Then move the wiper shaft back and forth to work in the oil, ****be carefull a lot of oil with spray back out on 1 st movement. 4. Then run wipers by vaccum they should be alot better you can do the oil soak again if needed. I had to, the results were amazing, i have great wipers now. I was told the leather seal inside the wiper motor dry's out and it need the oil to reseal. This saved me a ton of money, thanks filling station
The seals are some kind of leather.I have took many of them apart and actually made a few work again.Petroleum Jelly and baby oil mixed to a paste works well also for awhile ,but you have to take the wiper motor apart to use it on the seal.I tried getting replacement parts for them from Trico and had no luck when i had vacume wipers on my 54 .I ended up adapting a NOS vacume wiper that i found from a 49 Chevy truck .Thanks for the Marvel tip ...
HA! this is perfect... i was just thinkin about gettin an electric wiper motor... im definitley gonna give this a try.
I did the same thing only I used trans fluid. Been working great now for months, of rainy weather, around here.
was out in the rain with the 53 today and the wipers worked well, next is adding a small vacuum tank to the wipers wont slow down when i step on the gas
Motors that have been sitting in cars or in boxes in unairconditioned spaces often have a hard ridge of grease at the point where the paddle was stopped. It helps to dismantle the motor and smear this grease throughout the paddle chamber, probably the MMO melts it during the waiting period, and that often wakes up a motor without destroying the seals.