DRAFT
TM 5-4210-249-13&P-2
0184
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
TFFT04737
NOTE
Front and rear heater relays and contactors are similar. Rear heater relay and contactor
are components used in Steps 20 and 21. Troubleshoot front heater relay and contactor
the same way.
Step 20.
Turn hydraulic generator off (WP 0021). Turn vehicle engine OFF (TM 9-2320-347-10).
Turn battery disconnect switch to OFF position (WP 0007). Open water tank heater
control box (WP 0301). Remove rear water tank heater guard and rear water tank
heater cover (WP 0300). Check for continuity across black wire from rear water tank
heater contactor terminal 2, to rear water tank heater black wire terminal.
If continuity is not present, replace rear water tank heater power
cord (WP 0361).
Step 21.
Check for continuity across gray wire from rear water tank heater relay terminal, to rear
water tank heater gray wire terminal.
a.
If continuity is present, replace rear water tank heater (WP 0300).
b.
If continuity is not present, replace rear water tank heater power
cord (WP 0361).
0184-9
