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MAINTENANCE
FILTER SERVICE
Replace return oil filter elements
Replace leakage oil filter element
Check filter screens
Follow the steps shown in illust. Z 19336:
1.
Loosen bolt (1).
2.
Turn retainer (2).
3.
Remove cover assy (3). Inspect O-ring (4) and
replace if necessary.
4.
Lift out element assy (5).
5.
Disassemble filter assy (5) in sequence of ref. nos.
(6 to 12)
6.
Discard element (8)
7.
Inspect screen (11) and clean if necessary.
NOTICE
Take care not to contaminate the clean inside of the screen
when flushing.
8.
Inspect screen (11) and O-ring (12) for damage
replace if necessary.
Install screen (11) use new sealing washer (10) and
self locking nut (9).
9.
Reassemble filter assy (5) with new element (8)
according to step 5.
Use new self locking nuts (6).
10.
Install filter assy use new gasket (7).
Torque bolt (1) to 850 Nm.
NOTICE
After each repair of the hydraulic system the elements (8)
should be replaced after about 50 operating hours.
The filter elements must also be replaced when the fault
message "Filter restriction" is displayd on the ECS
screen.
Replace screens (11) every 5000 operating hours at the
latest.
4.12 EVERY 1000 OPERATING HOURS OR EVERY 6 MONTH
441
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