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TM-9-2320-361-24-2 Page 820

TM-9-2320-361-24-2 Field Maintenance Manual Volume 2 for M44A2 Series Trucks

Page 820 of 1144


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TM 9-2320-361-24-2 0418 00 0418 00-2 ENGINE COOLANT HEATER BLOWER MOTOR MAINTENANCE (Contd) NOTE Prior to removal, tag lead wires for installation. 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). CLEANING AND INSPECTION 1. Inspect blower motor (9) for dirt, grease, and carbon. WARNING • Skysol 100 solvent is combustible; DO NOT use or store near heat, sparks, flame, or other ignition sources. Use mechanical ventilation whenever product is used in a confined space, heated above ambient temperatures, or agitated. Keep container sealed when not in use. • Contact with Skysol 100 may cause skin irritation. Use chemical-resistant gloves. In case of skin contact, remove any contaminated clothing and wash skin thoroughly with soap and water. Wash contaminated clothing before reuse. Eye contact may cause irritation, tearing, or blurring of vision. Use face shield or goggles when eye contact may occur. In case of eye contact, flush eyes with large amounts of water for at least 15 minutes or until irritation subsides. Inhalation may cause irritation to upper respiratory passages. DO NOT have food or drink in the vicinity. Failure to comply may result in injury to personnel. • Compressed air source must not exceed 30 psi (207 kPa). Wear eyeshields when cleaning with compressed air. Failure to wear eyeshields may result in injury to personnel. 2. Clean housing (13) surface with Skysol 100 and dry with clean rag or compressed air. Do not immerse in solvent. INSTALLATION 1. Install blower motor (9) on heater housing (13) with four new nut-assembled lockwashers (10). 2. Install wire (7) on heater component bracket (14) with new screw-assembled lockwasher (8). 3. Install elbows (1) and (5), air tube (4), and ground lead (3) on heater housing (13) with new nut-assembled lockwasher (2). 4. Place new tiedown strap (6) around heater wiring. 5. Install guard (12) on heater housing (13) with four screws (11). 6. Install engine coolant heater (WP 0076 00). 7. Test engine coolant heater (WP 0426 00). 8. Connect battery ground cable (WP 0126 00). 9. Release parking brake and remove wheel chocks (TM 9-2320-361-10).