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Section 4 - Maintenance Procedures
TABLE C
DANGER
Do the check of the valves taking all the possible
precautionary measures:
- Wear safety glasses
- Wear safety gloves
- Wear safety shoes
- Wear suitable working clothes
- Use guards against leaks of oil at high pressure
- Do the check in a free space with barriers all around
to keep non-authorised people away
- Ensure that the part to be checked is in safe condition
and that the action generated does not result in an
uncontrolled movement of the machine.
TO REMOVE THE BLOCK VALVES OR THE
CYLINDERS
-
Lower the boom to the ground in a firm way since
the removal of the block valve or the cylinder can
cause an uncontrolled down-movement.
-
After refitting the valve or the cylinder, replenish
the circuit and eliminate any air before starting
working. To eliminate the air from the circuit, move
the involved cylinders to end-of-stroke in the two
directions (opening/closing. To eliminate the air
from the fork balance cylinder, move the boom up
and down and tilt the fork plate forwards/back.
44
GTH-4017EX GTH-4514EX GTH-4013EX
Outriggers cylinder
Rear axle locking cylinder
H
Machine compensation cylinder
November 2008
F
G
Document 57.0009.0427
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