ZF Repair Manual: ZF63A, ZF63, ZF80A, ZF80-1A
<< Previous of 84 Next >>5.7 Adjusting the pretension/clearance of
bearings
When the thickness of shims has been determined, the
transmission must be disassembled again.
a)
Using a adequate drift punch, drive the parallel pins
(item 1, Fig. 5-7a) with slight blows, out of the housing.
b) Loosen hex bolts (item 2 and 3) with lockwashers
(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 bearings 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.
5.8Final assembly of the housing
a) Heat input side of the housing in an oven to approx.
120ëC (248 ëF).
|
WARNING
|
Handle heated housing only with protective gloves!
b) Insert the required shims for proper pretension into
bearings bore under bearing outer race.
c) Insert outer races of bearings. When the housing has
reached ambient temperature, drive outer races of
bearings down to the stop, using a copper punch.
d) Insert shafts.
e) Fill space between seal and dust lips of shaft seal
rings with a high quality bearing grease (Staburags
Kluber NBU 30).
f) Apply a thin coat of Loctite 518 on mating surface of
input side of the housing and join both housing halves
together.
g) Drive parallel pins into housing to align housing
halves, before tightening.
h) Install mounting bolts (item 2 and 3 Fig. 5-5a) and tor-
que them to 40 Nm (30 ft.lb.).
NOTE
There must be not measurable bearing clearance.
|
WARNING
|
The necessary time for a complete polymerization is
5 hours: we recommend therefore to clean carefully
the mating surfaces with Loctite 7063 cleaner before
applying the Loctite 518 and wait the requested time
before the spin test.
24
Repair Manual and Spare Parts List
Section 4: Assembly
1
4
2
4
3
1
5
FIG. 5-7a
ADAPTER FOR
BASIC UNIT 454422
50
A
B
FIG. 5-7b
BASIC UNIT