ENGINE OVERHEATSContinued - TM-9-2350-277-20-1

ENGINE OVERHEATSContinued - TM-9-2350-277-20-1_116

ENGINE OVERHEATSContinued - TM-9-2350-277-20-1_118

TM-9-2350-277-20-1 Hull Powerpack Drive Controls Tracks Suspension and Associated Components Carrier Ammunition Tracked Manual
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TM 9-2350-277-20-1 ENGINE OVERHEATS—Continued 0014 00 10Y 1. Allow system to remain at 13 to 15 psi pressure for five minutes. 2. Does pressure drop less than one psi? YES NO 10YN 1. Internal coolant system leak. Beyond unit maintenance repair. 2. Notify supervisor. 11Y 1. Replace coolant pump (WP 0241 00). 2. Verify no faults found. BY 1. Engage thermostatic fan speed switch (see your -10). 2. Does fan still fail to rotate? YES NO BYN 1. Replace thermostatic fan speed switch (WP 0231 00). 2. Verify no faults found. B2Y 1. Stop engine (see your -10). 2. Remove ventilating fan drive belt (WP 0243 00). 3. Manually rotate ventilating fan drive shaft pulley (1). 4. Does fan spin freely? YES NO B2YN 1. Faulty fan drive gearbox. Beyond unit maintenance repair. 2. Notify supervisor. 0014 00-5

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