TM 9-2350-277-20-5
DRAIN AND FILL ENGINE COOLANT HEATER SYSTEM — Continued
0710 00
FILL
1.
Close shutoff valves (1) and (2).
2.
Fill cooling system (WP 0227 00).
3.
Close heater fuel shutoff valve (3) (see your -10).
4.
Start engine (see your -10).
5.
Hold RUN-OFF-START switch in START and run engine 2,950 rpm for maximum 30 seconds to prime coolant pump.
6.
Stop engine (see your -10). Refill cooling system (WP 0227 00).
7.
Open heater fuel shutoff valve (3) (see your -10).
NOTE
Hoses to and from battery box heat exchanger will gradually increase in temperature and
remain warm if heater coolant system is primed and coolant heater is operating right.
8.
Start heater (see your -10). Check for proper operation. If heater overheats and shuts off, repeat steps Step 3, Step 4, and
Step 5.
0710 00-3
