TM 9-2320-361-34 I 17-3. ENGINE COOLANT HEATER BLOWER MOTOR MAINTENANCE THIS TASK COVERS: a. Removal c. Installation b. Cleaning and Inspection INITIAL SETUP APPLICABLE MODELS All TEST EQUIPMENT Multimeter (Appendix B, Item 3) TOOLS REFERENCES (TM) TM 9-2320-361-20 TM 9-2320-361-34P EQUIPMENT CONDITION Engine coolant heater removed (TM 9-2320-361-20). General mechanic’s tool kit GENERAL SAFETY INSTRUCTIONS (Appendix B, Item 1) ● Keep fire extinguisher nearby when using Tool kit, electrical (Appendix B, Item 2) drycleaning solvent. ● Compressed air source will not exceed 30 psi MATERIAIS/PARTS (207 kPa). . Eyeshields must be worn when cleaning with Tiedown strap (Appendix C, Item 15) compressed air. Drycleaning solvent (Appendix C, Item 24) Rag (Appendix C, Item 16) NOTE Tag wires for installation. a. Removal 1. Remove four screws (11) and guard (12) from heater housing (13). 2. Remove tiedown strap (6) from heater wiring. Discard tiedown strap (6). 3. Remove nut-assembled lockwasher (2), ground lead (3), air tube (4), and elbows (1) and (5) from heater housing (13). 4. Remove screw-assembled lockwasher (8) and wire (7) from heater component bracket (14). 5. Remove four nut-assembled lockwashers (10) and blower motor (9) from heater housing (13). b. Cleaning and Inspection 1. Inspect blower motor (9) for dirt, grease, and carbon. 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. 2. Clean housing (13) surface with drycleaning solvent and dry with clean rag or compressed air. Do not immerse in solvent. 17-6