Replace Pilot Oil Filter - Hitachi ZAXIS 70 Operator's Manual

Replace Pilot Oil Filter

--- every 1 000 hours
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. Stop the engine. Remove the key from the key
switch.
6. Pull the pilot control shut-off lever to the LOCK posi-
tion.
CAUTION: The hydraulic oil tank is pressurized.
Push the pressure release button on the air
breather before removing the air breather.
7. Use a wrench to remove filter case (4) from filter
head (1) by turning it counterclockwise.
8. Remove filter element (2) by turning it.
9. Remove and discard O-ring (3) and filter element (2).
10. Clean filter head (1) O-ring (3) and the element area.
11. Apply a thin film of clean oil to a new O-ring (3) and
install it in filter head (1). Be sure O-ring (3) is cor-
rectly positioned.
12. Apply a thin film of clean oil to the ring of new filter
element (2), that fits into filter head (1). Slowly install
filter element (2) by turning it.
13. Clean filter case (4).
14. Install filter case (4) onto filter head (1) by turning it
clockwise. Tighten case 40 N m (4.1 kgf m, 29.7
lbf·ft).
MAINTENANCE
7-34
ZAXIS70, 70LC, 80SB, 80SBLC, 80LCK
Pilot Oil Filter
ZAXIS85US
M1CC-07-002
1
2
3
4
M178-07-068
Pilot Oil Filter
M1CD-07-015
M1CG-07-010