Transmission - Hitachi EX27U Operator's Manual

C. TRANSMISSION
Travel Reduction Gear
Check Oil Level --- every 250 hours
1. Park the machine on a level surface.
2. Rotate the travel motor until plugs position is as illus-
trated on the right.
3. Lower the bucket and blade to the ground.
4. Run the engine at slow idle speed without load for
three minutes.
5. Stop the engine. Remove the key from the key
switch.
6. Pull the pilot control shut-off lever to the LOCK posi-
tion.
CAUTION: Keep body and face away from the air
release plug. Gear oil is hot. Wait for gear oil to
cool and then gradually loosen the air release
plug to release pressure.
7. After gear oil has cooled, slowly loosen air release
plug (1) to release pressure.
8. Remove oil level check plug (2). Oil must be up to the
bottom of hole.
9. If necessary, add oil until oil flows out of the oil level
check plug hole. (See gear oil chart)
10. Wrap the plug threads with sealing-type tape. Install
the plug.
Tighten the plug to 29 to 39 N⋅m (3 to 4 kgf⋅m, 21.5
to 29 lbf⋅ft).
11. Check the gear oil level in the other travel reduction
gear.
MAINTENANCE
7-20
1
2
3
M503-07-015
1
2
M585-07-080