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TM-9-2320-280-20 HMMWV Technical Manual Unit Maintenance Volume 2 Download

Page 816 of 953

8-5.1. RADIAL TIRE, WHEEL, AND RUBBER RUNFLAT MAINTENANCE (M1123 AND “A2” VEHICLES) INITIAL SETUP: Tools General mechanic’s tool kit: automotive, common No. 2 (Appendix B, Items 1 and 4) Special Tools Runflat compressor (Appendix B, Item 131) Torque adapter, 9/16 in. (Appendix B, Item 144) Socket adapter (Appendix B, Item 146) Materials/Parts Lubricant (Appendix C, Item 196) Twelve locknuts (Appendix G, Item 115) Locknut (Appendix G, Item 82) O-ring (Appendix G, Item 217) O-ring (Appendix G, Item 219) Detergent (Appendix C, Item 17) Sealing compound, if required (Appendix C, Item 44) Manual References TM 9-2320-280-10 TM 9-2320-280-24P TM 9-2610-200-14 Equipment Condition Wheel removed (para. 8-3). General Safety Instructions • Do not use tire machine. • Ensure tire is totally deflated before removing wheel locknuts. • Never use tubes in wheel assemblies. • Rim surfaces must be kept clean and free of rust and dirt. • Never use wheel assemblies with damaged studs. • Never inflate a wheel assembly with the wheel locknuts removed. • Never inflate a wheel assembly without first checking wheel locknut torques. • Do not exceed recommended tire inflation pressure. • Always use a tire inflation cage and a clip-on air chuck for tire inflation. • Ensure runflat compressor strap is centered around runflat. • Never install radial tire on eight bolt wheel. • Do not mix radial and bias tires. This task covers: a. Disassembly c. Repair b. Inspection and Cleaning d. Assembly a. Disassembly WARNING Do not use tire machine. Injury to personnel or damage to equipment may result. NOTE The following maintenance procedure applies to vehicles using load range "D" tires and one-piece rubber runflats. Refer to paras. 8-4 and 8-4.1 for maintenance instructions on bias tires and magnesium runflats. 1. Place wheel assembly in a tire inflation cage. WARNING In all disassembly operations, ensure the tire is totally deflated before removing wheel locknuts. Failure to follow proper safety precautions could cause serious injury or death. 2. Remove valve core (8) from valve bore (7) and deflate tire (6). Run a piece of wire through valve bore (7) to make sure it is not plugged. 3. When tire (6) is fully deflated, use a circular pattern and loosen twelve wheel locknuts (2) securing rim halves (1) and (4) together. If you hear escaping air, do not proceed. Wait until the sound stops and recheck valve bore (7). When you are certain the tire (6) is fully deflated, proceed to remove wheel locknuts (2). Discard locknuts (2). TM 9-2320-280-20-2 8-24.2 Change 3