Komatsu PW98MR-10 Operation & Maintenance Manual page 414

HANDLE MACHINE READY FOR INSTALLATION OF ATTACHMENT
METHOD FOR REMOVING ATTACHMENT
1.
Lower the attachment to the ground and stop the engine.
2.
Turn the starting switch to ON position (B).
3.
Set the lock lever to FREE position (F).
4.
Operate each control lever (work equipment, travel) and
attachment control switch fully in each direction within 15
seconds after the engine is stopped to release the internal
pressure in the hydraulic circuit.
5.
Set the lock lever to LOCK position (L).
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WENAM00061
ATTACHMENTS AND OPTIONS
RKA52830
RKA48500