TM-9-2320-361-34

2-1/2-TON, 6x6, M44A2 SERIES TRUCKS (MULTIFUEL)

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE

MAY 1992

TM-9-2320-361-34 - Page 667 of 764

TM 9-2320-361-34

17-10.

ENGINE COOLANT HEATER HOUSING MAINTENANCE

THIS TASK COVERS:

a. Removal

c. Installation

b. Cleaning and Inspection

INITIAL SETUP

APPLICABLE MODELS

EQUIPMENT CONDITION

All

●

Engine coolant heater flame detector switch

TOOLS

removed (para. 17-2).

. Engine coolant heater restriction thermostat

General mechanic’s tool kit (Appendix B, Item 1)

removed (para. 17-4).

REFERENCES (TM)

TM 9-2320-361-34P

●

Engine coolant heater burner removed

(para. 17-9).

GENERAL SAFETY INSTRUCTIONS

●

Compressed air source will not

exceed 30 psi

(207

kpa).

●

Eyeshields

must be worn when cleaning with

a. Removal

1. Remove three screws (2) from heater housing (1).

2. Separate heater housing (1) and remove heat exchanger (5) from heater housing (1).

b. Cleaning and Inspection

WARNING

Compressed air source will not exceed 30 psi (207 kPa). When

cleaning with compressed air, eyeshields must be worn. Failure to

wear eyeshields may result in injury to personnel.

Inspect heat exchanger (5) for exterior damage, leaks, and corrosion. Replace if damaged, heavily

corroded, or leaks are present. To remove carbon from heat exchanger, soak in water for a short time and

dry with compressed air.

c. Installation

Ensure flame detector adapter (3) and exhaust tube (4) are alined and install heat exchanger (5) in

heater housing (1) with three screws (2).

17-24