MAINTENANCE
7-56
Replace Hydraulic Oil Tank Filter
--- every 1000 hours
d
WARNING: Hydraulic oil may be hot just after opera-
tion. Be sure to wait for oil to cool before starting
work.
1. Park the machine on a level surface.
2. Lower the bucket to the ground.
3. Turn the auto-idle switch off.
IMPORTANT: The turbocharger may be damaged if the
engine is not properly shut down.
4. Run the engine at slow idle speed without load for five
minutes.
5. Stop the engine. Remove the key from the key switch.
6. Pull the pilot control shut-off lever to the LOCK position.
7. Leave the machine for a while after stopping operation.
After the oil temperature is cooled, push pressure release
button (8) to release pressure from the hydraulic oil tank.
f
NOTE: There is spring tension under cover (2). Hold down
cover (2) when removing last two bolts.
8. Hold down filter cover (2) against light spring load when
removing the last two bolts (1). Remove filter cover (2).
9. Remove spring (4), valve (5) and element (6).
10. Discard element (6) and O-ring (3).
11. Install a new element (6), valve (5) and spring (4).
12. Install cover (2) with new O-ring (3).
13. Install and tighten bolts (1) to 50 N•m (5.0 kgf•m, 37
lbf•ft).
14. After replacing filter element (6), bleed air from the pump
and check the oil level in the hydraulic oil tank. (Refer
to the Bleed Air from Hydraulic System in Step 3.) If the
machine is operated with air remaining in the hydraulic
system, damage to the hydraulic pump may result.
15. Replace element (6) at the regular interval to keep
hydraulic oil clean and to extend the life of the hydraulic
components.
5
M104-07-021
M1J1-07-006
8
3
4
5
6
21
M111-07-040
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