TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 1 Download
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REFERENCE INFORMATION TM 9-2320-387-24-l INSTRUMENTS CIRCUIT The brake warning lamp should come on when the engine is cranking, the parking brake is set, or there is a failure in the brake system. If brake warning lamp stays on, go to 1, page 2-323. If the warning lamp does not come on, go to D. page 2-324. BRAKE WARNING LAMP The voltmeter may be checked by running STEACE-R Test 67 wtth the engine running. The position in the center of the green area of the volt gauge marked GEN is approx- imately 28 volts. The voltmeter is a galvanometer-type gauge. It is conceivable that the coil in the gauge may have a broken wire that only opens when the gauge is heated up. If you are having an intermittent gauge problem, leave the vehicle running for a while and watch the gauge. ff the charging system is ok, but the gauge is reading full scale one way or the other, you may have this type of problem. Rotary switch has to be in the RUN position for the windshield wiper or washer to operate. VOLTMETER 2-309