Komatsu WA250PT-5H, Руководство по эксплуатации и техническому обслуживанию

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OPERATION
Operation
Handling hydraulic quick coupler
3-83
11. After completing the connection of the front attachment set
the two control levers up to position “B“.
Removal and installation of the attachment 0.
WARNING
The hydraulic system is always under internal pressure. When replacing and installing the coupling,
release the pressure inside the circuit. If the circuit is still under the pressure, high-pressure oil will spurt
out and lead to serious injury.
1. Lower the work equipment to the ground, stop the engine,
then operate the extra control lever fully 4 or 5 times. This
will release the pressure inside the hose.
2. Raise sleeve (2) of coupling (1), insert coupling (3), then
return sleeve (2) to its original position to complete the con-
nection.
3. Pull the hose to confirm that it is connected securely.
Precautions for use 0.
Check that the lock pin has been inserted securely, then operate the lift arm and bucket control levers.
Precautions when removing the attachment 0.
Before removing the attachment, disconnect the hydraulic coupling.
A
B
c