The New And Improved Unofficial R65 Forum V2
General Category => General Announcements => Topic started by: Luca on September 01, 2020, 08:12:06 PM
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Well, after some snafu's ordering from Motobins, my parts finally came in. I decided not to make my own puller in the interest of time. I found a new Matra puller locally for a comparable price to the cycleworks puller. I know the cycleworks tool is good (and maybe even easier to use), but there's something sexy about factory special tools.
The rear input shaft bearing has a very slight raspiness, but not enough to halt the job. Here are some pics at the halfway point. I got the job done in a workday, including new seals, boots, and a little rustoleum brushed on the frame to quell some of the rust that has developed in hard to reach areas over the years.
https://photos.app.goo.gl/D5y5Q85tW9eJ2La2A
https://photos.app.goo.gl/Xf2DTR7uLyJ7Gjss6
P.S. I wonder how much re-shimming is actually required when you change only bearings. The bearings in our transmissions are probably manufactured to ten-thousandths of an inch tolerances. I suspect the shims make up for rear cover machining more than anything else
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You are correct in respect to the manufacturer's tolerance, particularly if you use the same brand of bearings you find in the gearbox.
But.
On the couple of functioning gearboxes I have pulled apart of other reasons (eg broken pawl spring, dropped oil channel etc) I reckon BMW (or Getrag) set them up on the tight side.
As I prefer to rebuild with semi-sealed bearings a re-shim is mandatory.
Cycle works is an excellent source of shims, much cheaper than BMW
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Tried just fitting new bearings but it was tight
I had to bite the bullet and buy the shim plate
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Holly Cow that garage should have a shim plate :o