Komatsu PC2000-8 BACKHOE, Operation & Maintenance Manual

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OPERATION
DETAILED CONTROLS AND GAUGES
3-99
Automatic Greasing Warning Lamp
This lamp (6) flashes red when there is no grease remaining. If
this lamp (6) is always lighted up, it shows that some problem
has occurred in the automatic greasing system. If this is the
case, it is necessary to check the cause and carry out restora-
tion work. Please ask your Komatsu distributor to carry out the
restoration work.
Engine Emergency Stop Cancel Warning Lamp
This lamp (4) lights up when the engine emergency stop cancel
switch is at the ON position.
q
The engine emergency stop cancel switch is installed to
make it possible to carry out operations for a short time
when there is an abnormality in the engine control system.
It is not to be used as a permanent measure. Repair the
problem immediately.
q
After the abnormality is corrected, turn the engine emer-
gency stop cancel switch inside the cab base the way it
faces down. Then the lamp goes off. For more details,
see“Engine Emergency Stop Cancel Switch (3-86)“.
Ladder Warning Lamp
This lamp (7) lights up red when any of the following devices
have been lowered.
q
Hydraulic ladder
q
Service center (if equipped)
If the lamp is lighted up, the PPC (hydraulic pilot) lock is
applied, so it is impossible to swing or drive the machine, or
operate the work equipment. When all the equipment is
stowed, the lamp goes out and the PPC lock is cancelled.
q
For the right handling of the hydraulic ladder, see “When Raising Ladder (Setting to Stowing Position) (3-151)“.
q
For the right handling of the service center, see “When Raising Service Arm (Setting to Stowing Position) (6-
18)“.
NOTICE
If the lamp does not go out even when all the equipment is stowed, please ask your Komatsu distributor to
carry out inspection and repair.
Lamp Monitor display Problem Cause
Lights up
Automatic greasing pressure
low warning
When pump is actuated,
pressure in grease piping
does not rise •Pump failure
•Running empty
•Cracked grease piping, leakage
Flashes Grease low-level monitor
Remaining grease is below
specified level
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9JH10727A
9JH10730A