TM-5-4210-249-13-P-1

TACTICAL FIRE FIGHTING TRUCK (TFF) MODEL M1142

TECHNICAL MANUAL; OPERATOR’S AND FIELD LEVEL MAINTENANCE MANUAL WITH REPAIR PARTS AND SPECIAL TOOLS LIST (INCLUDING DEPOT REPAIR PARTS AND SPECIAL TOOLS); PART 1 OF 4

TM-5-4210-249-13-P-1 - Page 384 of 1188

TM 5-4210-249-13&P-1

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DRAFT

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TFFT4821

WARNING

ICON 13

Allow engine to completely cool before handling any cooling system component or

hose.

Failure to comply can result in serious injury to personnel.

Step 30.

Shut vehicle engine off (TM 9-2320-347-10). Turn battery disconnect switch to OFF

position (WP 0007).

Remove vehicle engine panels (TM 9-2320-347-10).

Check if

crew cab heater manual shutoff valves are in open position.

If crew cab heater manual shutoff valves are not open, open heater manual

shutoff valves.

Step 31.

Check if crew cab heater supply and return hoses are free from leaks, kinks, and

damage.

a.

If crew cab heater supply and return hoses are free from leaks, kinks,

and damage, replace crew cab heater core (WP 0208).

b.

If crew cab heater supply and return hoses are not free from leaks,

kinks, and damage, replace damaged hoses (WP 0209).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION