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Don't try it in the car! (archive)

[ Follow Ups ] [ 2002 Message Board ] [ Msg. Board FAQ ]

Posted by Steve Vonk on September 10, 1999 at 11:52:24:

In Reply to: replace timing gear? posted by Dar on September 10, 1999 at 09:09:07:

Unless you are removing the engine from the car, I would say you should limit your work to trying to fix the leak - that will be hard enough. Removing the chain is pretty hard since you will likely break the head gasket extension in front of the timing chain. The top gear will be pretty easy to take off once the timing chain cover is removed, but the bottom gear is impossible to remove with the crank in the engine. To remove the gear my machine shop had to heat the gear to red hot with an oxy-acetylene torch and press it off with a hydrolic press. It broke into pieces. They had to do the reverse to get the new gear onto the crank. These thing are very hard to change, and I don't understand why BMW made it so much fun! Maybe it's just German engineering! You will also have to worry about the oil pump if you mess with the lower gear, since its chain goes onto the bottom timing gear.

Good luck,

Steve Vonk
'76 2002 Sahara (bent)
'76 2002 Inka (5 sp OD)

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