TM-5-4210-249-13-P-2

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 2 OF 4

TM-5-4210-249-13-P-2 - Page 806 of 1452

TM 5-4210-249-13&P-2

0184-8

DRAFT

0184

TFFT04731

Step 17.

Turn off hydraulic generator (WP 0021).

Shut off vehicle engine (TM 9-2320-347-10).

Turn battery disconnect switch to OFF position (WP 0007).

Open water tank heater

control box cover (WP 0301).

Check for continuity across red wire from front water tank

heater contactor terminal 4, to front water tank heater relay terminal.

If continuity is not present, repair or replace red wire

(TM 9-2320-325-14&P).

Step 18.

Check for continuity across green wire from front water tank heater relay terminal, to

water tank heater control box ground stud.

If continuity is not present, repair or replace green wire

(TM 9-2320-325-14&P).

Step 19.

Remove front water tank heater guard and water tank heater cap (WP 0300).

Check for

continuity across gray wire from front water tank heater relay terminal, to front water

tank heater terminal.

a.

If continuity is present, replace water tank heater control

box (WP 0301).

b.

If continuity is not present, replace front water tank heater power

cord (WP 0361).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION