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24.7.5 REPLACE HYDRAULIC FILTER ELEMENT
When removing the oil filler cap, turn it slowly to release the internal
pressure before removing it.
1.
Remove the cap from oil filler
2.
Loosen 4 bolts, then remove cover
When doing this, the cover may fly out under the force of spring
so hold the cover down when removing the bolts.
3.
After removing spring
4.
Clean the removed parts in diesel oil.
5.
Install a new element in the place where old element
stalled.
6.
Set valve
and spring
7.
Set cover
in position, push it down by hand, and install the cover
with the mouning bolts.
8.
Screw in the oil filler cap and install the cover.
9.
To bleed the air, start the engine according to "12.2 STARTING EN-
GINE" and run the engine at low idling for 10 minutes.
10. Stop the engine.
REMARK
Operate the machine after halting for more than 5 minutes to liminate
bubbles in the oil inside the tank.
11. Check for oil leakage and wipe off any spilled oil.
When the hydraulic breaker is installed, the hydraulic oil deteriorates ear-
lier than in normal bucket digging work.
The first element replacement should be at 100 to 150 hours for new
machines. Thereafter, replace the element according to the table on the
right.
Replace the addititional filter elemnt for the breaker every approx.
250 hours (when breaker operating ratio is more than 50%) according to
the table on the right. (See "24.2.11 REPLACE ADDITIONAL BREAKER
FILTER ELEMENT".)
24.7.6 CHECK & ADJUST VALVE CLEARANCE
1.
Adjusting the valves
As a special tool is required for removing and adjusting the parts
request Komatsu for service.
WARNING
, and release the internal pressure.
.
and valve
, take out element
on top of the element.
24. SERVICE PROCEDURE
,
.
was in-
3-63
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