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Maintenance
Check electrical intake air heater
Before the start of the cold season (once a year), contact your
KOMATSU distributor to have the electrical intake air heater
repaired or checked for dirt or disconnections.
Check alternator
General
The alternator requires no lubrication since its bearings are fac-
tory lubricated for life and require attention only at the time of
major overhaul.
The alternator is equipped with an integral, transistorized volt-
age regulator. If the alternator fails to operate properly, consult
your distributor.
Precautions
REMARK
The unit electrical system is negative ground. Be CERTAIN the
ground polarity is correct when:
Installing a new battery.
Connecting a battery charger.
Using a booster.
Failure to observe proper polarity will result in damage to the
alternator.
NEVER use a fast charger as a booster to start the engine.
NEVER unhook a battery terminal while the engine is running.
NEVER disconnect the alternator cable while the engine is run-
ning.
REMARK
Do not short across or ground any terminals of the alternator. Do
not connect any cable to the "R" terminal on the alternator. This
will result in severe damage to the harness and radiator.
PW180-7E0 – VEAM400102
4.11 Maintenance procedure
When required
4-47
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