3 replies to this topic

[RELF]

Pre-verto clutch (1966) - I am unsure how to fit a new clutch thrust bearing to a new clutch throw-out plunger. It is an interference fit of course, so it won't just push on.
How do you experienced people do it? Do I need to boil the bearing in oil or perhaps freeze the plunger? Any advice would be really appreciated.
Big thanks in anticipation.

[tiger99]

You can freeze the plunger and heat the bearing, but don't go above 100C, and use an oven, don't boil in water, remembering that it contains lubricant. But ideally you will use a suitable piece of tube (a socket might just happen to be the right diameter) to press against the inner race to force it on, in a vice or using a hammer. Don't hammer (via a wooden block!) or press too hard on the outer race, i.e. the face which contacts the clutch, or you will "Brinell" the bearings and it will have a very short but noisy life. A gentle squeeze in the vice or a few light taps would be permissible.

They are not usually so tight, yours may be on the limit of tolerance, in which case a very gentle polish by some abrasive paper might reduce the plunger diameter just enough to make it easier. Or, if you have access to a lathe, and a very sharp tool, you could take a thou off and try it again. If it is slightly loose it may not matter, it can't fall out once the clutch cover is assembled to the housing, and if it was a tiny bit loose, some Loctite Bearing Fit would secure it.

[Dan]

I use a G cramp as it presses against the inner race directly, just need to use a small spacer to get it finally seated at the end.

[RELF]

Thanks chaps, got it fitted and using emery cloth must have helped. Managed it without heating - my wife wasn't keen on lending me the oven but the back-up plan was to wait until she went out.