Hitachi ZAXIS 70 - Change Hydraulic Oil; Suction Filter Cleaning

MAINTENANCE
7-29
Change Hydraulic Oil
Suction Filter Cleaning
--- every 4000 hours, 2500 hours
or 1500 hours
CAUTION: Hydraulic oil may be hot. Wait for oil
to cool before starting work.
IMPORTANT: Hydraulic oil changing intervals differ
according to kind of hydraulic oils used.
(See Recommended Oil Chart in this
group)
1. Park the machine on a level surface with the upper-
structure rotated 90
q
for easier access.
2. Position the machine with the arm cylinder fully re-
tracted and the bucket cylinder fully extended.
3. Lower the bucket to the ground.
4. Turn the auto-idle switch off.
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 posi-
tion.
8. Clean the top of the hydraulic oil tank to keep dirt out
of the hydraulic system.
CAUTION: The hydraulic oil tank is pressurized.
Push the pressure release button on the air
breather before removing the air breather.
9. Push pressure release button (1) on the air breather.
10. Remove cover (2).
11. Remove oil using a suction pump. The hydraulic oil
tank capacity, up to specified oil level, is approxi-
mately 100 liters (26.4 US gal).
12. Remove drain plug (3)
.
Allow oil to drain.
M1CC-07-006
M1CD-07-012
M1CD-01-008
M1CG-07-012
M1CD-07-011
Upper and
Lower Marks
Level Gauge
2
1
1
ZAXIS70, 70LC, 80SB, 80SBLC, 80LCK
ZAXIS85US
1
2
3
2
ZAXIS70, 70LC, 80SB, 80SBLC, 80LCK