EMERGENCY FAN CLUTCH OVERRIDE

TM-9-2320-387-10 Truck Utility: S250 Shelter Carrier 4x4 M1113 (2320-01-412-0143) (EIC: B6B) Manual Page Navigation
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TM 9-2320-387-10

3-23. EMERGENCY FAN CLUTCH OVERRIDE

a. The radiator fan normally activates when engine temperature exceeds 220F

(104C) and deactivates when engine temperature drops to 190F (88C). If

overheating occurs in an emergency situation, this procedure will ensure continuous

fan operation.

b. Raise and secure hood (para. 3-9).

c. Stop engine (para. 2-14) prior to disconnecting time delay module.

d. Disconnect time delay module connector (1) from control valve connector (2).

e. Start engine (para. 2-12).

f. Check fan for continuous operation. If fan is not operating continuously, stop

engine and notify unit maintenance.

g. Lower and secure hood (para. 3-9).

h. Allow engine to cool at idle until engine temperature lowers to normal

operating temperature of 185-250F (85-120C).

i. Proceed to unit maintenance with vehicle. Ensure unit maintenance

is notified of emergency service performed on vehicle.

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