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At this point I don’t recall whether I was able to remove the air box assembly, or
whether the rear frame had to be partially tilted upward first. (Hey, remember I only did
this once). But, it should be obvious to you once you have reached this point.
Unless I have forgotten something, you’re now ready to lift the rear frame. You can
either tilt the rear frame upward and connect it with a strap to the handlebars or, as I
did, suspend the frame from the ceiling. Either way, you are simply making room to
slide out the transmission.
Disconnect the two electrical wires (oil pressure sensor?) coming from the rear of the
transmission. If you remove the sensor itself, expect some transmission fluid to leak
out.
There are six bolts holding the transmission to the engine. First remove the bolts in the
upper left corner and the lower right corner. In their place screw in BMW mandrels (part
#23 1 280) or make your own mandrels from two M8 X 1.25mm bolts. I bought two hex
bolts 100mm long & cut the heads off. By screwing these into the bolt holes, the
mandrels serve as a guide on which to slide the transmission out & to reinstall it.
Remove the remaining transmission bolts and slide the transmission out.
Well, you did it. Now grab a camera & take a picture of whatever is left standing of your
pride and joy.
Thoroughly clean and inspect the clutch splines on the transmission. Lube the clutch
and driveshaft splines with BMW lube #10 (or the substitute of your choice). Don’t over
lube the clutch splines.
Before refitting the transmission, you might want to inspect your clutch.
Now reassemble everything in reverse order. No, don’t reassemble everything
backwards; reassemble everything in the reverse order of how you removed it. :-)
When refitting the bearing retainer bolts into the driveshaft housing, remember to apply
a thin coat of threadlock to the threads. Then torque to specs. Be methodical, make
sure that everything fits properly and torque all fasteners to specs. If you didn’t have
any serious difficulty up to this point, you shouldn’t have any problem the rest of the
way.
After everything is finally buttoned down, hold your breath, fire up the bike and go for a
test ride. Park bike, scream like Ed McMahon just gave you one of those 4-foot
$10,000,000 checks, and slam a well-deserved beer.
See ya back here in another 40,000 miles.
(continued on next page)
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