Bead Locks
8-4.1.   BIAS TIRE, WHEEL, AND RUBBER RUNFLAT MAINTENANCE INITIAL SETUP: Tools ____ General mechanic’s tool kit: automotive (Appendix B, Item 1) General mechanic’s tool kit: automotive, common No. 2 (Appendix  B, Item 4) Special Tools __________ Runflat compressor (Appendix B, Item 131) Torque adapter, 9/16 in. (Appendix B, Item 144) Materials/Parts _____________ Eight locknuts (Appendix G, Item 92) O-ring seal (Appendix G, Item 160) Detergent (Appendix C, Item 17) Lubricant (Appendix G, Item 141.1) Personnel Required ________________ One mechanic 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 bias tire on twelve bolt wheel. • Use only replacement parts specified in TM 9-2320-280-24P. • Do not use runflat compressor if compressor strap is frayed or damaged. 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 bias ply tires and one-piece rubber runflats. Refer to para. 8-4 for maintenance instructions on bias tires and magnesium runflats, and paras. 8-5 and 8-5.1 for maintenance instructions on radial tires and rubber 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 (4) from valve stem (3) and deflate tire (7). Run a piece of wire through valve stem (3) to make sure it is not plugged. 3. When tire (7) is fully deflated, use a circular pattern and loosen eight wheel locknuts (1) securing rim halves (2) and (9) together. If you hear escaping air, do not proceed. Wait until the sound stops and recheck valve stem (3). When you are certain the tire (7) is fully deflated, proceed to remove wheel locknuts (1). Discard locknuts (1). TM 9-2320-280-20-2 8-14.2 Change 2



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