TM-9-2320-280-20 HMMWV Technical Manual Unit Maintenance Volume 2 Download
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3-61. RADIATOR AND FAN SHROUD ASSEMBLY MAINTENANCE This task covers: a. Removal c. Installation b. Cleaning and Inspection a. Removal NOTE The radiator and fan shroud are removed as a unit. 1. Loosen clamp (2) and disconnect radiator inlet hose (1) from radiator (3). 2. Loosen clamp (6) and disconnect surge tank-to-radiator vent hose (5) from adapter (7). 3. Loosen clamp (16) and disconnect control valve hose (15) from shroud bulkhead adapter (17) NOTE M1123 and “A2” vehicles have a quick-disconnect on fan drive hose. 4. Disconnect fan drive hose (18) from fan drive (19). 5. Loosen clamp (10) and disconnect lower radiator front hose (11) from radiator (3). NOTE Perform step 6 only if shroud has to be removed from radiator. 6. Remove rivet (3.1) (if installed) and strap (4) securing fan shroud (33) to radiator (3). 7. Remove locknut (24), washer (25), capscrew (29), large washer (28), washer (25), and lower mount (26) from radiator (3) and frame bracket (27). Discard locknut (24). 8. Remove four locknuts (14), washers (13), and capscrews (12) from two rear support brackets (9) and airlift brackets (8). Discard locknuts (14). 9. Lift radiator (3) up and remove from vehicle. 10. Remove eight capscrews (30), lockwashers, (31), two retaining strips (32) and fan shroud (33) from radiator (3). Discard lockwashers (31). 11. Remove two locknuts (20), washers (21), large washers (22), insulators (23), and brackets (9) from radiator (3). Discard locknuts (20). INITIAL SETUP: Tools General mechanic’s tool kit: automotive (Appendix B, Item 1) Materials/Parts Locknut (Appendix G, Item 99) Six locknuts (Appendix G, Item 128) Eight lockwashers (Appendix G, Item 135) Rivet (Appendix G, Item 254) (optional) Repair kit (Appendix C, Item 37) (optional) Personnel Required One mechanic One assistant Manual References TM 9-2320-280-10 TM 9-2320-280-24P Equipment Condition • Hood removed (para. 10-5). • Cooling system drained (para. 3-60). • Oil cooler removed (para. 3-8). General Safety Instructions Compressed air used for cleaning purposes will not exceed 30 psi (207 kPa). TM 9-2320-280-20-2 3-110 Change 3 CAUTION Do not bend transmission oil cooler fins. Damaged fins reduce cooling efficiency, which may damage engine.