BRAKE COOLING OIL FILTER CLOGGING CAUTION LAMP
(if equipped)
The brake cooling oil filter clogging caution lamp warns about
the clogging of the brake cooling oil filter.
If the caution lamp lights up in yellow and the action level “L01”
is displayed, stop the engine, then check and clean the brake
cooling oil filter.
See “METHOD FOR REPLACING TRANSMISSION AND
REAR BRAKE COOLING OIL FILTER ELEMENT (4-54)”.
HYDRAULIC OIL FILTER CLOGGING CAUTION LAMP
(if equipped)
The hydraulic oil filter clogging caution lamp warns that the hy-
draulic oil filter is clogged.
If the caution lamp lights up in yellow and the action level “L01”
is displayed, stop the engine, then check and clean the hy-
draulic oil filter.
See “METHOD FOR REPLACING STEERING AND HOIST
OIL FILTER ELEMENT (4-62)”.
AUTO SUSPENSION SYSTEM CAUTION LAMP
(if equipped)
The auto suspension system caution lamp warns about abnor-
mality in the automatic suspension system.
If the caution lamp lights up in yellow and the action level “L01”
is displayed, always perform the inspection and maintenance
after the operation is finished.
Ask your Komatsu distributor for the inspection and mainte-
nance as needed.
OVERSPEED CAUTION LAMP
The overspeed caution lamp warns about the overspeed of the
travel speed while the overload speed limit function is actuated.
The caution lamp lights up in red.
At the same time, the centralized warning lamp lights up and
the alarm buzzer sounds intermittently.
Release the accelerator pedal, operate the brake pedal or the
retarder brake, and reduce the travel speed to the speed limit
or below.
EXPLANATION OF COMPONENTS OPERATION
3-30