- Joined
- Sep 23, 2007
- Messages
- 1,400
- Points
- 3,101
- Age
- 97
- Vehicle Year
- 1984/87
- Transmission
- Automatic
Model: 1998 MVP "speedy" lift floor jack 2 1/2 ton sold exclusively at Wal-Mart.
anyhow after several years of use the pressure release bolt got distorted and about to twist in two(really REALLY crappy soft metal)
Since my dad was a machinist, he took a bolt with the same threads and turned it down on a lathe at work and replaced that bolt with a stronger bolt.
After a while, it seem as we were having to tighten it more and more to get it to lift a load, (even to the point we had VISE GRIPS ON THAT BOLT)
Now the jack will not lift a load, but will lift it's own weight.
So I disassembled this jack and the pin under the pressure release bolt is cracked on the opposite side of the release bolt. Basically the bolt tightens down on this pin(about 3mm in diam and 6mm long) and that pin pushes against a ball bearing.
now that pin is distorted/cracked on the ball bearing end, it also has a indention into the face where the balls contacts the pin.
My question is I am planning on making a replacement pin, but is the indention in the end of the pin a design or is it just from wear?
anyhow after several years of use the pressure release bolt got distorted and about to twist in two(really REALLY crappy soft metal)
Since my dad was a machinist, he took a bolt with the same threads and turned it down on a lathe at work and replaced that bolt with a stronger bolt.
After a while, it seem as we were having to tighten it more and more to get it to lift a load, (even to the point we had VISE GRIPS ON THAT BOLT)
Now the jack will not lift a load, but will lift it's own weight.
So I disassembled this jack and the pin under the pressure release bolt is cracked on the opposite side of the release bolt. Basically the bolt tightens down on this pin(about 3mm in diam and 6mm long) and that pin pushes against a ball bearing.
now that pin is distorted/cracked on the ball bearing end, it also has a indention into the face where the balls contacts the pin.
My question is I am planning on making a replacement pin, but is the indention in the end of the pin a design or is it just from wear?
