Checking Tooth Contact Pattern - BMW R 1100 S Repair Manual

Checking tooth contact pattern

•
The tooth contact pattern must be checked if the
gear set, housing or input bevel pinion bearing
have been replaced.
L
Note:
The contact pattern is adjusted by means of the
shim washer (1) on the input bevel pinion.
•
Clean and degrease tooth flanks of crown wheel
and bevel gear and coat with marking ink.
•
Install measuring fixture, BMW No. 33 2 600,
centre crown wheel and use the balls of your
hands to press it into the housing and turn it back
and forth a few times.
•
If the correct shim is installed, the following con-
tact pattern appears with no load applied.
L
Note:
The contact point is centered on leading flank V.
The contact point is closer to the larger diameter on
trailing flank R.
e
Caution:
Make sure that teeth are not in contact at the smaller
diameter.
1
•
Install a thinner shim if the contact pattern looks
like this.
KR33025
•
Install a thicker shim if the contact pattern looks
like this.
V
R
KR330260
KR330270
KR330280
33.13