24. SERVICE PROCEDURE 24.1.15 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. 24.1.16 CHECK ALTERNATOR GENERAL The alternator requires no lubrication since its bearings are factory lubricated for life and require attention only at the time of major overhaul. The alternator is equipped with an integral, transistorized voltage regulator. If the alternator fails to operate properly, consult your distributor. PRECAUTIONS NOTICE: The unit electrical system is negative ground. Be CERTAIN the ground polarity is correct when: a.
Installing a new battery. b. Connecting a battery charger. c. 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 running. NOTICE: Do not short across or ground any terminals of the alternator. 24.1.17 CHECK STARTER MOTOR Under normal operating conditions, no maintenance is required between engine overhaul periods. At the time of engine overhaul, the motor should be disassembled, inspected, cleaned and tested. Contact your distributor for detailed information. PC450-ENG 3-35