S0602170K
Page 90
Axle (ZF AP 420R)
DIFFERENTIAL REASSEMBLY (VERSION - CAST-ON
BEARING CAPS)
NOTE:
If crown wheel or drive pinion are damaged, the two parts must be replaced as a set. If a
new complete crown wheel set is installed, pay attention that crown wheel and drive pinion
have the same mating numbers.
NOTE:
When replacing a complete crown wheel set or axle carrier, pay attention to the Figure
197.
DETERMINE THICKNESS OF SHIM
NOTE:
The following measuring operations must be carried out with utmost care. Inexact
measurements would cause an incorrect contact pattern and require a replacement of the
drive pinion and the differential (partial) after the contact pattern has been taken. See
“Examples of Gear-tooth-contact Patterns for the Gleason Gear-tooth System” on page
11.
1. Install adjusting pieces (3) and temporarily
fasten the two bearing caps. Install thrust
washer (2) and measuring pin (1) and
introduce measuring shaft (7), see Figure
197.
NOTE:
See “Special Tools” on page 15.
Figure 197
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