Replace Pilot Oil Filter - Hitachi ZAXIS 135US-6 class Operator's Manual

Hydraulic excavator

Table of Contents

Replace Pilot Oil Filter

--- every 1000 hours

CAUTION: The hydraulic oil tank is pressurized. Push

the pressure release button on the air breather before

replacing pilot oil filter.

1. Park the machine on a firm, level surface.

2. Lower the bucket to the ground.

3. Turn the auto-idle switch off.

IMPORTANT: The turbocharger may be damaged if the

engine is not properly shut down.

4. Run the engine at slow idle speed without load for 5

5. Stop the engine. Remove the key from the key switch.

6. Pull the pilot control shut-off lever to the LOCK position.

7. Remove pilot oil filter (2) by turning it counterclockwise

with the filter wrench.

8. Clean the filter O-ring contact area on filter head (1).

9. Apply a thin film of clean oil to the gasket of new filter

10. Install new filter (2). Turn filter (2) clockwise by hand

until the O-ring touches the contact area. Be sure not to

damage the O-ring when installing filter (2).

IMPORTANT: Do not re-use pilot oil filter (2).

Pilot Filter

Pilot Filter