Komatsu PC45MR-30403, Operation And Maintenance Manual

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LOCK LEVER
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WARNING
• When leaving the operator's seat, set the lock lever securely to LOCK position.
If the lock lever is not at LOCK position and the control levers, control pedals, and attachment con-
trol pedals are touched by mistake, it may lead to serious personal injury or death.
• Always check that the lock lever is in LOCK position.
• When pulling up or pushing down the lock lever, be careful not to touch the work equipment control
lever. Check that your clothes do not get caught by the work equipment control lever.
• Before setting the lock lever to FREE position, make sure that all control levers and control pedals
are set to NEUTRAL position.
If any of them is out of NEUTRAL position, the work equipment or machine may move suddenly and
cause a serious personal injury or death.
The lock lever is a device to lock the work equipment, swing, travel, and attachment control levers.
Be sure to operate the lock lever by the operating portion on the top.
By pulling up the lock lever, lever stand flips up to lock.
(L) LOCK position
Even if any of control lever, control pedal, or attachment control
pedal is operated, machine does not move.
(F) FREE position
The operator can operate the machine by operating the control
levers, control pedals, and attachment control pedals.
Automatic lock function of lock lever
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WARNING
• The lock lever automatic lock function assists the operator in judgment to reduce damage caused
by accident. It is not a device to stop the work equipment or machine in all situations.
• Even if the lock lever automatic lock function works, the work equipment or machine may not stop
immediately or may stop after moving by a certain distance.
The lock lever automatic lock function may not work in the following cases. Accordingly, do not rely
on it too much.
• When the hydraulic oil temperature is low
• When the viscosity of the hydraulic oil used is higher than that of the genuine hydraulic oils
which Komatsu recommends
• When the system has a problem
• Before setting the lock lever to FREE position, make sure that all control levers and control pedals
are set to NEUTRAL position.
If any of them is out of NEUTRAL position, the work equipment or machine may move suddenly and
cause a serious personal injury or death.
The lock lever automatic lock function automatically sets the lock lever in the locked state to prevent the work
equipment or machine from operating continuously when the lock lever is set to FREE position while the work
equipment control lever or travel lever is operated.
When the lock lever automatic lock function works, the operations of the work equipment, swing, travel, and at-
tachment are locked automatically. Even if any of control lever, control pedal, or attachment control pedal is op-
erated while the lock lever is in FREE position, the machine does not move.
OPERATION EXPLANATION OF COMPONENTS
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