TM 9-2350-256-20 CHAPTER 2: VEHICLE MAINTENANCE INSTRUCTIONS2 - 1 6 . 1 M E C H A N I C A L T R O U B L E S H O O T I N G - C o n t i n u e dV E N T I L A T I O N B L O W E R A S S E M B L Y - C o n t i n u e dC Check for low input due to low voltage batterieswhile engine is not running. Perform batteryserviceability test (see Table 2-l). Recharge orreplace low voltage batteries. If blower still does notcome up to speed, go to step D.D Check generator for proper output while engine isrunning. Troubleshoot APU generator output circuit(see paragraph 2-19) and generator output circuit(see paragraph 2-19).E Check for defective blower assembly. Troubleshootventilating blower circuit (see paragraph 3-19).F Check for loose blower assembly. Tighten mountingscrew (see paragraph 6-101).T R A N S M I S S I O N C E N T E R S E C T I O N A N D O U T P U T R E D U C T I O N G E A R SSYMPTOMSHigh transmission oil temperature.Do steps A through E.Vehicle will not drive in high range.Do step F.Vehicle will steer or pivot but will not drive in anyrange.Do step F.Vehicle will drive but creeps in neutral.Do step F.Vehicle will not drive in low range.Do step F.Transmission cannot be down-shifted.Do step G.Vehicle will not drive in intermediate range.Do step F.A Check transmission for proper oil level. Add oil iflow or drain to proper level if over full (refer to TM9-2350-256-10).B Open side air inlet grille doors. Check transmissionoil cooler screens for restrictions. Remove allrestrictions from oil cooler screens.C Visually inspect transmission oil cooler air passages.If transmission oil cooler air passages are restricted,clean air passages using oil cooler cleaning tool(Appendix B, item 137).2-40.10 Change 1
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