Komatsu PW98MR-10 Operation & Maintenance Manual page 172

EXPLANATION OF COMPONENTS
The lever is a device for locking the work equipment (standard
and optional), for rotating, translating and the engagement of
the parking brake.
(L) LOCK position:
Even if a control lever, an attachment control switch or a pedals
is operated, machine does not move.
(F) FREE position:
The operator can operate the machine by operating the control
levers, the pedals and attachment control switches.
When the lock lever is set to LOCK (L) position, the work
equipment lock pilot lamp lights up. At the same time, the mode
is displayed in the center of the monitor display for 2 seconds.
REMARK
The lock lever is of hydraulic lock type. Accordingly, when it is
in LOCK position (L), the control levers, the pedals and control
switches move but the machine does not move.
If the machine is not running and the lever is in the FREE posi-
tion (F) it is not possible to start the engine.
Automatic lock function of lock lever
• The lock lever automatic lock function assists the operator in judgment to reduce damage caused
by accident. It does not 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. Also, 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 hydraulic oil temperature caution lamp in-
dicates low temperature)
• When the viscosity of the hydraulic oil used is higher than that of the genuine hydraulic oils
which Komatsu recommends
• When system has failure
• Before setting the lock lever to FREE (F) position, make sure that all levers and 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.
When this function works, the operations of the work equip-
ment, swing, travel, and attachment are locked automatically
and the message shown in the figure is displayed.
While this function is in operation, the machine does not move
even if a control lever or the attachment control switch is oper-
ated while the lock lever is in FREE position (F).
3-104
k k
WARNING
WENAM00061
OPERATION
RKA48540
RKA48550