TM 9-2320-260-20
14-14. ENGINE COOLANT HEATER AND MOUNTING BRACKET REPLACEMENT (Contd)
9. Remove three locknuts (9), screws (12), washers (8), two locknuts (18), screws (13), and heater (3),
with mounting bracket (6), from battery box (14). Discard locknuts (9) and (18).
10. Remove clamp (16) and hose (19) from heater-pump valve (15).
11. Remove heater-pump valve (15), reducer (17), pipe (11), and elbow (10) from heater (3).
12. Remove two clamps (2) and heater (3) from two mounts (5).
13. Remove heater-battery box valve (1), bushing (22), and elbow (21) from heater (3).
14. Remove elbow (23) and fuel shutoff valve (24) from heater (3).
15. Remove four locknuts (7), screws (4), and two mounts (5) from mounting bracket (6). Discard
locknuts (7').
NOTE
If mounting bracket is to be replaced, perform step 16.
16. Remove heater pump (20) (para. 14-15).
NOTE
Perform step 1 if mounting bracket was removed.
Install heater pump (20) (para. 14-15).
1.
2.
Install two mounts (5) on mounting bracket (6) with four screws (4) and new locknuts (7).
3.
Apply antiseize tape to male threads of fuel shutoff valve (24), elbows (23) and ( 10), pipe (11),
and heat pump valve (15).
4.
Install fuel shutoff valve (24) and elbow (23) on heater (3).
5.
Install elbow (21), bushing (22), and heater-battery box valve (1) on heater (3).
6.
Install heater (3) on two mounts (5) with two clamps (2).
7.
Install elbow (10), pipe (11), reducer (17), and heater-pump valve (15) on heater (3).
8.
Install hose (19) on heater-pump valve (15) with clamp (16).
9.
Install heater (3), with mounting bracket (6), in battery box (14) with two screws (13), new
locknuts (18), three screws (12), washers (8), and new locknuts (9).
10.
Place battery box (14) on running board (36).
11.
Install ground lead (30) and wire (33) on pump (20) with nuts (41) and (34).
12.
Install hose (45) on heater-battery box valve (1) with clamp (44).
13.
Install hose (39) on pump elbow (35) with clamp (40).
14.
Push battery box (14) into storage position and install two safety pins (38) in handles (37).
15.
Connect exhaust tube (31) on heater (3) with new cotter pin (32).
16.
Install ground leads (30) and (26) on frame (27) with screw (25), new lockwasher (28), and new
locknut (29).
17.
Connect harness (43) to heater (3).
18.
Connect fuel line (42) to elbow (23).
NOTE
open fuel valve, heater-battery box valve, water manifold valve,
and engine oil cooler valve.
14-28
