Hitachi ZAXIS 450LC-3 Operator's Manual page 318

Change Gear Oil --- every 2000 hours
1. Park the machine on a level surface.
2. Rotate the travel motor until the imaginary line through
plug (1) and plug (3) is vertical.
3. Lower the bucket to the ground.
4. Turn the auto-idle switch off.
IMPORTANT: The turbocharger may be damaged if the
engine is not properly shut down.
5. Run the engine at slow idle speed without load for three
minutes.
6. Stop the engine. Remove the key from the key switch.
7. Pull the pilot control shut-off lever to the LOCK position.
d
WARNING: Keep body and face away from air release
plug (1). Gear oil is hot just after operation. Wait for
gear oil to cool and then gradually loosen air release
plug (1) to release pressure.
8. After gear oil has cooled, slowly loosen air release plug
(1) to release pressure.
9. Remove drain plug (3) to drain oil.
10. Wrap the threads of drain plug (3) with sealing-type tape.
Install the plug.
Tighten the plug to 70 N•m (7 kgf•m, 51 lbf•ft).
11. Remove oil level check plug (2).
12. Add oil until oil flows out of oil level check plug (2) hole.
(See gear oil chart)
13. Wrap the threads of oil level check plug (2) and air
release plug (1) with sealing-type tape. Reinstall the
plugs.
Tighten the plugs to 70 N•m (7 kgf•m, 51 lbf•ft).
14. Repeat steps 8 to 13 for the other travel reduction gear.
MAINTENANCE
7-48
1
ZX450LC
-3
1
3
ZX650LC
-3
1
ZX850LC
-3
2
3
M166-07-012
2
M17P-07-011
2
3
M17V-07-019