DRAFT
TM 5-4210-249-13&P-2
FIELD LEVEL MAINTENANCE
WATER TANK HEATER DOES NOT OPERATE PROPERLY
INITIAL SETUP:
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Tools and Special Tools
References (continued)
Tool Kit, General Mechanic's: Automotive
(WP 0622, Item 27)
WP 0300
WP 0301
Personnel Required
WP 0302
MOS 63B Wheeled vehicle mechanic (2)
WP 0360
WP 0361
References
WP 0456
TM 9-2320-325-14&P
WP 0470
WP 0004
WP 0007
Equipment Conditions
WP 0010
Water pump engine OFF (WP 0022)
WP 0020
Engine OFF (TM 9-2320-347-10)
WP 0021
Wheels chocked (TM 9-2320-347-10)
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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.
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