The purpose of this special tool is to
hold the clutch housing in place so the you can
remove/install the clutch nut without having it turn the
By inserting a block of wood into
the upper left corner between the bellhousing and one of the
clutch housing flanges, you can accomplish the same thing.
BMW Clutch Centering (Alignment) Tool - Part 212670
The purpose of this tool is to
center the clutch plate before retightening the six clutch
bolts so that the splines of the clutch plate are aligned
with transmission input shaft when the transmission is
You can buy aftermarket machined
aluminum clutch centering tools on eBay for about $25
However, I developed my own
approach without the need for a special tool of any kind.
Namely, using the transmission itself as your centering
When you install the clutch
plate, tighten the six clutch bolts only enough to hold the
clutch plate in place by light friction but so that it can
still move. Then feel around the edges and use your fingers
to get it as well centered as you can that way.
Put the transmission in fifth
gear (makes turning the input splines via the output shaft
easier) and, without the pushrod in, temporarily install the
transmission, wiggling it around and turning the input shaft
until it mates with the clutch plate. Then push the
transmission all of the way on. The clutch plate is
now aligned. Carefully pull the transmission STRAIGHT
back and then, once it is off, tighten the six clutch bolts.
Before lubing the splines and
inserting the clutch pushrod, install the transmission once
more to ensure that the clutch plate is properly aligned
with the clutch bolts tightened. Then remove the
transmission, insert the clutch pushrod, lube the
transmission input splines and do the final transmission
© 2013 Drake Smith - Please do
not use or reproduce this elsewhere. Feel free to link
to it though.