TM 9-2350-261-20-4
DRAIN AND FILL ENGINE COOLANT HEATER SYSTEM -- Continued
0639 00
DRAIN
1.
Open shutoff valve (1) at coolant pump (2) and valve (3) at heater (4).
2.
Completely drain cooling system (WP 0193 00).
3.
Remove batteries and retainers (WP 0302 00 or WP 0303 00).
4.
Remove and drain battery box heat exchanger (5) (WP 0309 00 or WP 0310 00).
5.
Install battery box heat exchanger (WP 0309 00 or WP 0310 00).
6.
Install batteries and retainers (WP 0302 00 or WP 0303 00).
