changing gearbox bush

oldbmw · Post by **oldbmw** » Wed Nov 25, 2009 7:41 pm

As some of you may know I have a Royal Enfield which I converted to RH gearshift. Currently the gearshift lever passes through a cast iron bush with an oil seal at the end to keep it oil tight. I have made a longer bush with a closed (blind) end Which eliminates the need for the oil seal.
What is the best method to install this bush? My instincts are to tap it in gently with a hammer, but I was wondering if I had a looser fit and used some kind of sealer it might put less pressure on the unsupported aluminium gearbox case and lessen the risk of cracking the fragile material of the bush ( cast iron).

Anyone have any ideas?

pietenpol2002 · Post by **pietenpol2002** » Wed Nov 25, 2009 9:04 pm

If it's nearly a press fit, I might start by sending the bush to the freezer compartment for a bit. Shrink that puppy, no?

oldbmw · Post by **oldbmw** » Thu Nov 26, 2009 7:50 pm

Thanks. I will leave in the frezer for a while and pour hot water over the gearbox cover.

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changing gearbox bush

changing gearbox bush

Re: changing gearbox bush

Re: changing gearbox bush