94 - 3
Drive Head-Assembly
Pinion Depth
Determine the pinion depth setting as follows:
Note:
See p age
Crow nw heel and Pinion
for general
guidance on crownwheel and pinion adjustment.
1
Assemble the pinion inner bearing and its cup on a flat
surface.
2
Place Service Tool 892/00174 over the bearing assembly.
Measure gap
A
. Add tool depth (30.01 mm) to gap
A
to
give bearing depth.
3
Note the mounting distance figure
B
etched on the pinion
and the deviation figure
C
on the drive head housing.
Both figures are in units of 0.01 mm.
Note
: The pinion depth may be etched on the gear face
B
or
on the rear of a gear tooth
D
.
4
If dimension
B
is
positive
,
add
it to the bearing depth. If
dimension
B
is
negative
,
subtract
it from the bearing
depth.
5
If dimension
C
is
positive
,
subtract
it from the total. If
dimension
C
is
negative
,
add
it to the total.
6
Subtract the result from the standard value of 31.19 mm
to give the required shim thickness.
Example (Dimensions in mm)
Dimension
A
0.25
Add tool depth
+ 30.01
Total
30.26
Add dimension
B
if positive.
(Subtract if negative.)
+ 0.01
Total
30.27
Add dimension
C
if negative.
(Subtract if positive.)
+ 0.01
Total
30.28
Standard Value
31.19
Less calculated total from above
- 30.28
SHIM THICKNESS
0.91
Section F
9803/3280
Section F
94 - 3
Issue 1
Rear Axle - SD80, PD70
S256110
S256120
B
C
S184400
D