3.7 TAPERED ROLLER BEARINGS
Check for failed bearings or excessive bearing wear.
3.7.1 Disassembling the outer races of taper
roller bearing
Remove the outer races out of the housing halves by
means of the specialtool(Fig. 7-1) or by heating the
housing halves in an oven to approx. 120ëC (248ëF).
Put the housing in the oven upside down, so the outter
races will fall out.
|
WARNING
|
Use protective gloves when handling the heated
housing and outer races.
+
|
IMPORTANT
|
Regard location of shims under each outer race for
correct position during reassembling. Shims are lo-
cated under outer races of the cover only.
3.7.2 Removal of inner races of taper roller
bearings
Input shaft - spline side
The extractor (Fig. 7-2a) is required for pulling the inner
races off.
For extracting the inner races proceed as follows:
.
insert collet
.
place collet onto the roller cage
.
tighten collet to rollers by means of cap nut
.
screw spindle against shaft and pull bearing evenly
and carefully off.
Input shaft - Control block side
The Inner race and the gear on the controlblock side
can be removed by using the split ring and a standard
hydraulik press (Fig. 7-2b).
Input shaft - Control block side ZF 85 IV - ZF 80IV
(ZF 85 IV DERIVATE VERSION)
.
Remove the retaining ring (item 1, Fig. 7-2c) using
a plier.
.
Scrap the retaining ring.
.
Remove the washer (item 2, Fig. 7-2c).
.
Remove the shims (item 3, Fig. 7-2c).
Intermediate and reversal shaft
The inner race of bearings can be drawn off with a com-
mercialextracting unit.
|
WARNING
|
Improper use of the extractor when removing the
races, could cause damage to the races or slipp off.
Output shaft
For extracting the inner races (item 1 and 2, Fig. 7-2d)
proceed as follows:
.
cut bearing cage (item 3, Fig. 7-2d) open and re-
move rollers
.
place gear on a sleeve
.
press output shaft off the gear. Pay attention for
pressing-out direction of output shaft Fig. 7-2d.
The bearing inner race (item 1, Fig. 7-2d) will be ex-
tracted at the same time.
Extracting force required: approx. 400kN
14
Repair Manualand Spare Parts List
Section 3
FIG. 7 - 1
INPUT SPLINE SIDE
CONTROL BLOCK SIDE
FIG. 7 - 2a
FIG. 7 - 2b
1
2
3
FIG. 7 - 2c
3
2
1
FIG. 7 - 2d
