Hitachi ZAXIS 70 Operator's Manual page 173

Swing Internal Gear --- every 500 hours
CAUTION: Adding or changing swing internal
gear grease and rotating the upperstructure must
be done by one person. Before you start, clear
the area of all persons.
Each time you leave the cab
Lower the bucket to the ground.
Stop the engine.
Pull the pilot control shut-off lever to the
LOCK position.
Use handrails.
1. Park the machine on a level surface.
2. Lower the bucket to the ground.
3. Turn the auto-idle switch off.
4. Run the engine at slow idle speed without load for
five minutes.
5. Turn the key switch OFF. Remove the key from the
key switch.
6. Pull the pilot control shut-off lever to the LOCK posi-
tion.
7. Open the tool box cover on the upperstructure and
remove cover (1).
8. Grease must be to the top of all internal gear teeth of
the swing bearing and be free of contamination.
Add approximately 0.5 kg (1.1 lb) of grease, if re-
quired. If the grease is contaminated, remove grease
and replace with clean grease.
IMPORTANT: If water or mud is found in the swing
gear area, see Operating in Water or Mud
in the "Driving the Machine" section.
9. Install the cover.
10. If grease shows any sign of water or mud, replace all
the grease on the internal gear.
Remove cover (2) from the bottom of the swing gear
housing, located near the center joint.
Grease capacity: 4.4 L (4.7 US qt)
MAINTENANCE
2
7-19
ZAXIS70, 70LC, 80LCK
ZAXIS80SB, 80SBLC
ZAXIS85US
1
M1CD-01-002
M1CD-07-041
M1CG-07-001
M157-07-161