TM 9-2320-361-34 17-9. ENGINE COOLANT HEATER BURNER MAINTENANCE THIS TASK COVERS: a. Removal c. Installation b. Cleaning and Inspection INITIAL SETUP APPLICABLE MODELS EQUIPMENT CONDITION All Engine coolant heater fuel tube and preheat resistor removed (para. 17-8). TEST EQUIPMENT .. Multimeter (Appendix B, Item 3) GENERAL SAFETY INSTRUCTIONS ● Keep fire extinguisher nearby when using TOOLS drycleaning solvent. General mechanic’s tool kit ● Compressed air source will not exceed 30 psi (Appendix B, Item 1) (207 kPa). Tool kit, electrical (Appendix B, Item 2) ● Eyeshields must be worn when cleaning with compressed air. REFERENCES (TM) TM 9-2320-361-34P MATERIALS/PARTS Gasket (Appendix F, Item 47) O-ring (Appendix F, Item 174) Drycleaning solvent (Appendix C, Item 24) Remove four nuts (5), clamps (6), hook bolts (7), burner (4), O-ring (3), and gasket (2) from heater exchanger (1). Discard O-ring (3) and gasket (2). a. Removal b. Cleaning and Inspection WARNING ● ● Drycleaning solvent is flammable and will not be used near open flame. Use only in well-ventilated places. Failure to do so may result in injury to personnel. 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. c. Installation Inspect burner (4) for scorched and charred surfaces. If scorched or charred, clean burner (4) surfaces with wire brush, wipe clean with drycleaning solvent, and dry. Replace burner (4) if insulating pad is charred or parts are missing. Position new gasket (2), new O-ring (3), and burner (4) on heat exchanger (1) and install with four hook bolts (7), clamps (6), and nuts (5). 17-22