MAINTENANCE
7-49
Replace Hydraulic Oil Return Filter
--- every 1000 hours
d
WARNING: Hydraulic oil becomes hot during
operation. Severe burns may result if skin comes
in contact with hot hydraulic oil. Wait for the oil to
cool before starting any maintenance work.
Especially when removing the filter, be careful that
the remaining oil in the filter does not spill.
Replacement Procedures
1. Park the machine following the same procedures as
described on page 7-6 for preparation of inspection/
maintenance work.
2. Install articulation stopper (lock bar) to the front
and rear of the chassis by following the procedures
described on page 7-8.
3. Clean the vicinity around cover plate (1).
4. Get a container and workshop towels to hold the
spilled oil and the element.
Relieve the air pressure from the hydraulic oil tank by
pressing air bleed valve (6).
5. Loosen bolts (2) (6 used) to remove cover (1) and
O-ring (3).
When removing cover (1), slowly remove the cover
while pressing the cover downward so that spring
(4) does not fly off. Slowly permit cover to rise, then
carefully remove.
6. Remove spring (4), and element (5).
7. Replace element (5) and O-ring (3) with new ones.
Install new element and new O-ring in the hydraulic
oil tank.
8. Install cover (1) with bolts (2) (6 used).
m
: 50 N·m (5.0 kgf·m)
9. After replacing the return filter element, bleed air
from the hydraulic pump and check the oil level in
the hydraulic oil tank. [Refer to the descriptions for
“Bleed air from the hydraulic system” in item
2
.]
If the machine is operated without bleeding the
air mixed in the hydraulic circuit, damage to the
hydraulic pump may result.
f
NOTE: Replace the element at the regular intervals to
maintain clean hydraulic oil and extend the service life of
the hydraulic components.
3
4
5
1
2
M4GB-07-052
1
115Z7-7-37-1
6
Summary of Contents for ZW 550-6
Page 4: ......
Page 10: ...CONTENTS SPECIFICATIONS 12 1 Specifications 12 1 Intended Use 12 1 INDEX 14 1 ...
Page 12: ...MACHINE NUMBERS 2 Aftertreatment Device SCR TYPE MFG NO DOC TYPE MFG NO 95Z7B SCR4 95Z7B SCR4 ...
Page 54: ...SAFETY LABELS S 42 2 25 7 4 1 26 1 8 9 5 6 11 12 10 24 115Z7B S 42US ...
Page 148: ...OPERATOR S STATION 1 84 MEMO ...
Page 208: ...OPERATOR S STATION 1 144 MEMO ...
Page 210: ...BREAK IN 2 2 MEMO ...
Page 226: ...OPERATING THE ENGINE 3 16 MEMO ...
Page 274: ...OPERATING THE MACHINE 5 28 MEMO ...
Page 354: ...MAINTENANCE 7 70 MEMO ...
Page 418: ...9 4 MAINTENANCE UNDER SPECIAL ENVIRONMENTAL CONDITIONS MEMO ...
Page 422: ...10 4 STORAGE MEMO ...
Page 428: ...11 6 TROUBLESHOOTING MEMO ...
Page 430: ...SPECIFICATIONS 12 2 MEMO ...
Page 438: ...INDEX 14 8 ZW550 6 US MEMO ...