ZF Repair Manual: ZF63IV, ZF80IV, ZF80-1IV
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Clean the transmission thoroughly on the outside be-
fore disassembly.
The repair area should be clean and well lighted.
ZF-HURTH MARINE recommends using a swivelling
stand for aiding in assembly and disassembly.
Swiveling stand ZF
Output - half side up
Swiveling stand ZF
Input - half side up
1
2
4
3
FIG. 1-1
1
2
3
FIG. 1-2
9
Repair Manual and Spare Parts List
Section 3: Disassembly
DISASSEMBLY
1. FLUID FILTER
1.1 Remove fluid filter
Remove fluid filter (item 1, Fig. 1-1) from housing by
turning and pulling at the same time.
Pull filter element (item 2, Fig. 1-1) off.
Check O-rings (item 3 and 4, Fig. 1-1) for wear, replace
if necessary.
1.2 Suction of transmission fluid
Push hose of suction pump (item 1, Fig. 1-2) through
the suction pipe (item 2, Fig. 1-2) down to the bottom
of the housing and suck the fluid off.
1.3 Suction of transmission fluid on ZF63 IV,
ZF80IV and ZF80-1IV
Remove the plug (item 3, Fig. 1-2) and let the oil flow
from the proper hole.