TM-9-2350-311-34-1

HULL, POWERPLANT, DRIVE CONTROLS, TRACKS, SUSPENSION, AND ASSOCIATED COMPONENTS: HOWITZER, MEDIUM, SELF-PROPELLED, 155MM

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL

SEPTEMBER 1994

TM-9-2350-311-34-1 - Page 286 of 352

TM 9-2350-311-34-1

10-2 COOLANT HEATER — CONTINUED

a. Disassembly — Continued

Use caution when removing compression sleeve from steel tube of flame detector

switch. Compression sleeve will normally be seated against probe. Failure to comply

will result in equipment damage.

15 Loosen nut (30) and remove flame detector switch (23).

16 Remove compression sleeve (31) and nut (30). Discard compression sleeve.

17 Disconnect two leads (32 and 33) from connector (34) on overheat thermostat (20).

18 Disconnect lead (35) from terminal strip (8).

19 Loosen nut (36).

20 Remove two screws (37) and fuel control valve (38) from bracket (39) and fuel tube (40).

21 Remove two screws (41) and bracket (39).

22 Disconnect lead (42) from overheat thermostat (20).

23 Remove nut (43), Iockwasher (44), and retainer (45). Discard Iockwasher.

24 Remove overheat thermostat (20), connector (34), flat washer (46), and preformed packing (47). Discard

preformed packing.

25 Loosen four nuts (48) and remove end plate (49).

26 Remove assembled screw (50), lead (51), and Iockwasher (52) from igniter (53). Discard assembled screw

and Iockwasher.

27 Remove two nuts (54) and preheat resistor (55).

28 Remove igniter (53) and gasket (56). Discard gasket.

29 Remove two screws (57).

30 Leave flange (58) loose on fuel tube (40) and remove tapping plate (59).

31 Remove two assembled screws (60), two nuts (61), and cable (62). Discard assembled screws.

32 Remove fuel tube (40) and resistor (55) as an assembly.

10-26