TM 9-2350-261-20-l
1. Allow system to remain pressurized for 5 minutes.
2. Does pressure drop less than 1 psi?
1. Internal coolant system
2. Notify your supervisor.
1 . H a s t h e r m o s t a t b e e n r e p l a c e d?
1. Replace thermostat
(page 8-15).
YES
2. Verify no faults found.
1. Replace coolant pump (page 8-11).
2. Verify no faults found.
1. Stop engine (see your -10).
2. Remove ventilating fan drive belt (page 8-35).
3. Manually rotate ventilating fan drive shaft
pulley (1).
4. Does fan spin freely?
1. Faulty transfer gear case.
2. Notify your supervisor.
1. Fan does not spin.
2. Notify your supervisor.
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