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 799 of 1452
TM 5-4210-249-13&P-2
0184-1
DRAFT
0184
FIELD LEVEL MAINTENANCE
WATER TANK HEATER DOES NOT OPERATE PROPERLY
INITIAL SETUP:
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MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
WATER TANK HEATER DOES NOT OPERATE PROPERLY
NOTE
Ensure water tank is at least 1/4 full for this procedure.
Water tank heaters will not operate
unless water level is above water level sender in water tank.
Step 1.
Turn battery disconnect switch to ON position (WP 0007).
Check if water level is at or
above 1/4 full on personnel cab or pump operator’s panel WATER LEVEL gauge
(WP 0004).
If water level is at or above 1/4 full, go to Step 7.
Step 2.
Start engine (TM 9-2320-347-10).
Start hydraulic generator (WP 0021).
Place circuit
breakers 11, and 13, and main shutoff control switch to ON position (WP 0004).
Place
and hold TANK HEATER TEST SWITCH in TEST position (WP 0004).
Allow sufficient
time for front water tank and rear water tank heaters to operate.
Check if tank heater
lights illuminate (WP 0004).
Note results.
Remove heater guard (WP 0300).
Check if
heaters become warm.
Note results.
a.
If both front tank and rear tank heaters and lights operate during test,
go to Step 26.
b.
If rear tank heater operates, but light does not operate, go to Step 24.
c.
If front tank heater operates, but light does not operate, go to Step 22.
Tools and Special Tools
Tool Kit, General Mechanic’s: Automotive
(WP 0622, Item 27)
Personnel Required
MOS 63B Wheeled vehicle mechanic (2)
References
TM 9-2320-325-14&P
WP 0004
WP 0007
WP 0010
WP 0020
WP 0021
WP 0171
References (continued)
WP 0215
WP 0300
WP 0301
WP 0302
WP 0360
WP 0361
WP 0456
WP 0470
Equipment Conditions
Water pump engine OFF (WP 0022)
Engine OFF (TM 9-2320-347-10)
Wheels chocked (TM 9-2320-347-10)
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