Porsche 928 Workshop Manual page 877

928
Differential. Tranraxle System
39
DETERMINATION OF SHIMS S1 AND S2
Measured backlash must he brought to value
specified by manufacturer of pinion/ring gear
by splitting total shim thickness Sges.
Determining Shim Thicknrss S2
(Opposite Ring Gear)
s2 = sqes s1
Specified Value:
Getiag pinion/ring gear = 0.15 to 0.20 mm
flurth pinion/ring gear : 0. 20 to 0. 2.5 mm
Example:
a
Backlash is stamped on ring gear.
sges
0.05 mm
3
-
0.21 mm
0.68 mm
Note
Determining Shim Thickness S1
[Ring Gear End)
The change in backlash by splitting shims Sl and
Sz is only an example and doer not have to he
made strict according to procedures.
S1 = Sges (total shim thickness)
-measured backlash
a
+ backlash inscribed on ring gear
Example:
sgen
- measured backlash
t inscribed backlash
(e.g. 0.20 mm)
%
1. Remove side transmission cover and split total
shim thickness Sges, that it given the determined
shim thicknesses Sl and S2.
O.D5 mm
0.88 mm
Note
0.01
mm
0. 20 mm
0.27 mm
When tightening nuts for side transmission covers.
always remember that there is a certain amount
of backlash. Never let the drive pinion
and
ring
gear clamp.
Printed in Germany _ 1, 1y78
Adjusting Drive Pinion and Ring Gear
(Automatic Transmission)
xl - 39