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