GENERATOR COOLING FAN CIRCUIT. (Cont) - TM-9-2350-238-20-10154

TM 9-2350-238-20-1

2-12. ELECTRICAL CIRCUIT TROUBLESHOOTING (CONT).

Disconnect wiring harness from generator cooling fan. Place red probe in

Step 2.

plug socket A (lead 415). Ground black probe. Start engine and run at

650 rpm. Check voltage and stop engine. If multimeter indicates about 24

volts, replace generator cooling fan. Refer to page 2-552. If multimeter

does not indicate about 24 volts, go to step 3. Connect wiring harness to

generator cooling fan.

Step 3.

To access circuit breaker, remove hull transmission compartment deck

assembly. Refer to page 2-938. Disconnect leads 415 from circuit

breaker (near engine disconnect). Start engine and run at 650 rpm.

Check voltage and stop engine. If multimeter indicates about 24 volts, go

to step 4. If multimeter indicates no voltage, repair lead 415 from

generator to circuit breaker. Refer to page 2-371.

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