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SERVICE PROCEDURE
CHECK OIL LEVEL IN HYDRAULIC TANK, ADD OIL
When removing the oil filler cap, oil may spurt out, so
●
turn the cap slowly to release the internal pressure
before removing the cap.
If oil has been added to above the H mark, stop the
●
engine and wait for the hydraulic oil to cool down, then
drain the excess oil from drain plug (P).
1. If the work equipment is not in the condition shown in the dia-
gram on the right, start the engine run the engine at low
speed, retract the arm and bucket cylinders, then lower the
boom, set the bucket teeth in contact with the ground, and
stop the engine.
2. Check sight gauge (G). The oil level is normal if between the
H and L marks.
REMARK
Do not add oil if the level is above the H line. This will damage
the hydraulic equipment and cause the oil to spurt out.
3. If the level is below the L mark, remove cap (F) from the
hydraulic tank and add oil.
For details of the oil to use, see "USE FUEL, COOLANT
AND LUBRICANTS ACCORDING TO AMBIENT TEMPER-
ATURE (234)"
REMARK
The oil level will vary depending upon the oil temperature.
Accordingly, use the following as a guide:
Before operation: midway between H & L level
●
(Oil temperature 10 to 30°C)
Normal operation: around H level
●
(Oil temperature 50 to 80°C).
CHECK AIR CLEANER FOR CLOGGING
1. Confirm that the air cleaner clogging monitor does not light up
(H).
2. If it lights up, immediately clean or replace the element.
For details of the method of cleaning the element, see
"CLEAN INSIDE OF COOLING SYSTEM (255)"
272
WARNING
H
MAINTENANCE
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