ZF Repair Manual: ZF25A, ZF25, ZF45A, ZF45-1
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This step should be done very carefully to obtain the
actual bearing clearance.
f) Carry out steps b) and e) for several times.
ZF25A - ZF25 - ZF45A
The bearing clearance measured plus the pretension
required in section 5.1 will determine the required thick-
ness of shims.
ZF45-1
The bearing clearance measured minus the clearance
required in section 5.1 will determine the required thick-
ness of shims.
NOTE
g) Remove nut ring and output flange (bolt with
washer for ZF45-1) and dial gauge with support.
4.5.7 Adjusting the pretension/clearance of
bearings
When the thickness of shims has been determined, the
transmission must be disassembled again.
NOTE
The following step is not needed for ZF45-1 if the
measured values are within the clearance required.
a) Using a adequate drift punch, drive the parallel pins
(item 1, Fig. 5-7a) with slight blows, out of the hous-
ing.
b) Loosen hex bolts (item 2 and 3, Fig. 5-7a) with lock-
washers (item 4, Fig. 5-7a) and remove input side of
housing (item 5, Fig. 5-7a).
c) Pull outer races of bearings out of the input side of
the housing using the extracting unit (Fig. 5-7b) or
heating the half housing in an oven to approx.
120ëC (248ëF) and remove the outer races of bear-
ings together with shims.
|
WARNING
|
Handle heated housing half and outer race only with
protective gloves!
NOTE
Make sure to keep the shims with each outer race
and not mix them together.
25
Repair Manual and Spare Parts List
Section 4
1
4
2
4
3
1
5
FIG. 5 - 7a
ADAPTER FOR
BASIC UNIT 454422
50
A
B
BASIC UNIT
FIG. 5 - 7b