TM 5-6115-593-12TO 35C2-3-463-1Table 5-6. Automatic Control Module Troubleshooting (Organizational Level)-ContinuedMALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTION5. ADDITIONAL GENERATOR OUTPUTS DO NOT CONNECT LESSER PRIORITY FEEDER BREAKERS.Using a multimeter check for 24V DC at coil of LR2, 3 or 4 relays.If present, refer to testing and replacement of LR2, 3 or 4 relays to next higher level of maintenance.If absent connect a jumper from TB4-1 to R2 diode pack terminal 5 for checking LR2, or from TB4-1 to R2diode pack terminal 2 for checking LR3.If critical load is activated, refer testing and replacement of BR2, BR3 or BR4 relay to next higher level ofmaintenance.If jumper does not correct problem, remove jumper and refer testing and replacement of R2 diode packassembly to next higher level of maintenance.6.GENERATOR OUTPUT CONNECTS TO FEEDER LINES BUT FEEDER LINES 2, 4, 6 OR 8 ARE INOPERATIVE.Using a multimeter, check for 24V DC at LRTD1, 2, 3 or 4 whenever LR1, LR2, LR3 or LR4 is energizedrespectively.If voltage is present refer testing and replacement of LRTD relays to next higher level of maintenance.Section V . HOUSING KIT5-21. GENERAL. The housing kit encloses thegenerator set and is removable to provide access foroverhaul or replacement of major components. Thehousing is attached to the base assembly and thesupport frame assembly to provide a rain proofenclosure, and prevent rain, snow, or sand from enteringthe interior of the housing. With the housing kitinstalled, the generator set can be operated at ambienttemperatures from 125F (52C) down to -25°F (-32C).The housing doors allow access to the inside of thegenerator set. The shutter assembly at the radiator endof the generator set is automatically controlled andmaintain correct operating temperatures for thegenerator set. Major components of the housing kitinclude panels, doors, shutters, electrical harness,exhaust breather, and necessary hardware items for kitassembly.Louver control relays K60 through K63, and fuses F61thru F63 in External Power Box (figure 5-4) louver motorpilot switches S60 through S63, and louver motors B10through B13 (capable of two way operation) control thefour louver assemblies. When the engine starts eachlouver control relay energizes and 24 V DC is applied,by way of the louver motor pilot switches, to the louvermotors and the louvers5-20
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