sandblasting tips for rear diff
Hi,
I sand blasted it. Then Epoxy and high temp paint. (i do hope the Epoxy holds..)
Basically the diff has 4 holes that need to be closed really tight.
See attached pics.
I used the side bolts and 2 large washers on the output side.
On the input side, I used a large washer combined with a very large nut, capped off with original nut.
For the vent at the top you have 2 options; make a temp cover from 2 or 3 mm alu sheet, or like i did, cover the opening with a rubbertape (specifically resistant to sandblasting). Advantage of blasting with the original vent, is that itis directly ready for a clear coat.
The large washers are also ideal to use as a pressing tool to get new seals in place (should you consider it)
All large washers and nut are specifally purchased at a local hardware store, though 'anything that is larger then the hole" should work.
I can add washer and nut specs if needed. Just let me know & i'll update this post.
The last pic by the way was what I didn't expect; the ball bearing of the left output shaft was going to give out. I discovered this only upon removal of the seal. The cage that holds the balls at equal distance seperated in a front a back section, where it should be one unit. I was not a problem ....yet....
If you have the diff out from under the car, and are unaware of the age of the seals; I would advise to replace them. ~25 usd/euro and 30 minutes of work, it also gives you reassurance of the bearings.
Erik.
