AUXILIARY POWER UNITQUICK GUIDE TO TROUBLESHOOTING (CONTINUED)ItemSTACKER (cont.)PRIMARY HYDRAULIC PUMPBACKUP HYDRAULIC PUMPNBC VENTILATED FACE PIECE SYSTEMProblemPROJECTILE TRAY WILL NOT SLIDE, OR SLIDES WITHDIFFICULTYPROJECTILE TRAY DOES NOT LOCK IN POSITIONPROJECTILE TRAY HAS EXCESSIVE PLAY ON SUPPORT SHAFTINSUFFICIENT OR NO SYSTEM OIL PRESSURELOSS OF HYDRAULIC PRESSURE DURING OPERATIONPUMP DOES NOT OPERATEPUMP OPERATES lNTERMlTTENTLYINSUFFICIENT OR NO AIR FLOW AT QUICK-DISCONNECTFITTINGSAIR PURIFIER MOTOR DOES NOT OPERATEM3 HEATER DOES NOT OPERATEENGINE CRANKS BUT FAILS TO STARTENGINE OVERHEATINGENGINE STARTS BUT FAILS TO KEEP RUNNINGENGINE HARD TO STARTENGINE HARD TO START IN COLD WEATHERSolution or ReferenceSee page 2-241See page 2-241Adjust projectile tray rollers(p 12-38).See page 2-242See page 2-242See page 2-244See page 2-244See page 2-246See page 2-246See page 2-246See page 2-252see page 2-258See page 2-260See page 2-261See page 2-2612-59Change 4TM 9-2350-267-20
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