Komatsu HM400-5, Operation & Maintenance Manual

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1.
Connect the clip of jumper cable (A) to the positive (+) ter-
minal of battery (C) on the failed machine.
2.
Connect the clip at the other end of jumper cable (A) to the
positive (+) terminal of battery (D) on the normal machine.
3.
Connect the clip of jumper cable (B) to the negative (-) ter-
minal of battery (D) on the normal machine.
4.
Turn the battery disconnect switch (S) of the failed ma-
chine to ON position.
5.
Connect the clip at the other end of jumper cable (B) to en-
gine block (E) of the failed machine.
METHOD FOR STARTING ENGINE
1.
Check that the parking brake switches of both normal machine and failed machine are set to “PARKING”
position
In addition, check that the gear shift levers are in NEUTRAL position (N).
2.
Make sure the clips are firmly connected to the battery terminals.
3.
Start the engine of the normal machine and run it at full speed (Max. speed).
4.
Turn the starting switch of the failed machine to START position and start the engine.
If the engine does not start, try again after at least 2 minutes.
PROCEDURE FOR DISCONNECTING JUMPER CABLES
After the engine has started, disconnect the jumper cables in the reverse of the order in which they were con-
nected.
1.
Remove the clip of jumper cable (B) from engine block (E)
on the failed machine.
2.
Remove the clip of jumper cable (B) from the negative (-)
terminal of battery (D) on the normal machine.
3.
Remove the clip of jumper cable (A) from the positive (+)
terminal of battery (D) on the normal machine.
4.
Remove the clip of jumper cable (A) from the positive (+)
terminal of battery (C) on the failed machine.
OTHER TROUBLE
PHENOMENA AND ACTIONS FOR ELECTRICAL SYSTEM
• For the remedies indicated with (*) in the remedy column, always contact your Komatsu distributor.
• In cases of problems or causes which are not listed below, ask your Komatsu distributor for repairs.
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. (*)
Insufficient battery charge Charge, add distilled water.
Loosening and damage of belt Check alternator belt tension and re-
place.
Lamp flickers while engine is running. Defective wiring Check and repair loose terminals,
open circuit. (*)
Insufficient battery charge Charge, add distilled water.
Loosening and damage of belt Check alternator belt tension and re-
place.
TROUBLES AND ACTIONS OPERATION
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