MAINTENANCE
7-25
3
Travel Reduction Gear
Check Oil Level --- every 250 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 five
minutes.
6. Stop the engine. Remove the key from the key switch.
7. Pull the pilot control shut-off lever to the LOCK position.
WARNING: Keep body and face away from the air
release plug. Gear oil may be hot just after operation.
Wait for gear oil to cool and then gradually loosen the
air release plug to release pressure.
8. After gear oil has cooled, slowly loosen air release plug (1)
to release pressure.
9. Remove air release plug (1) and oil level check plug (2).
Oil must be up to the bottom of hole.
10. If necessary, add oil until oil flows out of oil level check
plug (2) hole. (See gear oil chart)
11. Wrap plugs (1) and (2) threads with sealing-type tape.
Install plugs (1) and (2).
Tighten plugs (1) and (2) to 50 N•m (5 kgf•m).
12. Check the gear oil level in the other travel reduction gear.
Air Release Plug 1
(Oil Supply Plug)
Horizontal Oil Level
Oil Level Check
Plug 2
Drain Plug 3
1
2
M104-07-019
M157-07-170
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