Komatsu WA600-8, Operation & Maintenance Manual, Page: 359 / 554

METHOD FOR LOWERING WORK EQUIPMENT WHEN STOPPING ENGINE
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WARNING
Check safety of the area around the machine before lowering the work equipment.
1.
Turn the starting switch to ON position (B).
2.
Press (a) of the work equipment lock switch to unlock the
work equipment.
The work equipment lock pilot lamp on the machine moni-
tor goes out.
3.
Operate the work equipment control levers, and lower the
work equipment to the ground.
4.
Set the work equipment control lever to “HOLD” position.
5.
Press (a) of the work equipment lock switch to lock the
work equipment.
The work equipment lock pilot lamp on the machine moni-
tor lights up.
6.
Turn the starting switch to OFF position (A).
REMARK
The operation must be done within 2 minutes after the en-
gine stops.
If the engine is kept stopped, the gas pressure in the accu-
mulator lowers and you cannot lower the work equipment
to the ground.
OTHER TROUBLE
PHENOMENA AND ACTIONS FOR ELECTRICAL SYSTEM
• Contact your Komatsu distributor for the remedies indicated with (*) in the remedy column.
• Ask your Komatsu distributor for repairs for problems or causes which are not listed below.
Problem Main causes Remedy
Lamp does not glow brightly even
when the engine runs at high
speeds.
Defective wiring Check and repair loose terminals,
open circuit. (*)
Defective belt Check the belt and replace it. See
EVERY 500 HOURS MAINTE-
NANCE.
OPERATION TROUBLES AND ACTIONS
3-291