TM-9-2320-387-10

TRUCK, UTILITY: S250 SHELTER CARRIER, 4X4, M1113

OPERATOR’S MANUAL

OCTOBER 2001

CHANGE 1

TM-9-2320-387-10 - Page 209 of 277

TM 9-2320-387-10

1 3-23. EMERGENCY FAN CLUTCH OVERRIDE 1

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

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

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

fan operation.

b.

C.

d.

e.

f.

Raise

and secure hood (para_ 3-9).

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

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

Start engine (para. 2-12).

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

-

..e.

. .

. ,

engine ana notny unit mamtenance.

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

h.

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

operating temperature of 190”-230°F (88”-110°C).

i.

Proceed to unit maintenance with vehicle. Ensure unit maintenance

is notified of emergency service performed on vehicle.

3-26