Batteries can be totally discharged within four tosix hours if air cleaner blower motor system ismalfunctioning or if blower motors operate fulltime. Troubleshooting step K provides a basic testof the blower motor circuit by testing the blowermotor relay output voltage to the voltageregulator (wire 27B). If the blower motor relay out-put is 24 vdc (battery power) with the voltageregulator disconnected from the circuit, then thevoltage regulator is malfunctioning/inoperativeand will not charge the battery. If the voltage isless than 24 vdc (battery power), then the blowermotor circuit is malfunctioning and dischargingthe battery.L Do not check or adjust voltage regulator except as follows:Make sure batteries are fully charged(TM 9-2350-267-10).TA3127042-127Change 1TM 9-2350-267-20
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business