Komatsu PW160-7K Series, Operation And Maintenance Manual

Page: 294 / 358

SERVICE PROCEDURE MAINTENANCE
294
EVERY 1000 HOURS SERVICE
Maintenance for every 100, 250 and 500 hours should be car-
ried out at the same time.
REPLACE HYDRAULIC FILTER ELEMENT
WARNING
●
The parts and oil are at high temperature after the engine
is stopped, and may cause serious burns. Wait for the
temperature to go down before cleaning the hydraulic
tank strainer.
●
When the oil filler cap is removed, oil may spurt out, so
turn the cap slowly to release the internal pressure, then
remove it carefully.
1. Set the work equipment on hard and flat ground in the main-
tenance posture as shown in the figure. Then lower it to the
ground and stop the engine.
2. Remove the cap from oil filler (F), and release the internal
pressure.
3. Loosen 6 bolts, then remove cover (1). When doing this, the
cover may fly out under the force of spring (2), so hold the
cover down when removing the bolts.
4. After removing spring (2), valve (3) and strainer (4), take out
element (5).
❍
Inspect the bottom of the filter case for dirt, and remove it,
if any. Be very careful not to let dirt fall into the hydraulic
tank.
5. Clean the removed parts in diesel oil.
6. Install the new element in the place where old element (5)
was installed.
7. Set valve (3), strainer (4) and spring (2) on top of the element.
8. Set cover (1) in position, push it down by hand, and install the
cover with the mounting bolts.
9. Install the oil filler cap.
10. To bleed the air, start the engine according to "STARTING
ENGINE (162)" and run the engine at low idle for 10 minutes.
11. Stop the engine.
F
1
1
2
3
4
5