TM 10-4320-344-24c .Remove cotter pin (3), retaining bolt (4), and hook (5) .Discard cotterp i n ( 3 ) .3.10.4.2 Repair.a .Inspect chain (1), retaining bolt (4), and hook (5) for damage.b .Refer to Appendix D and manufacture new chain 29 inches or 27 links in length.3.10.4.4 Installation.a .Install retaining bolt (4) and new cotter pin (3) to secure hook (5) tochain (1).b .Install safety chain (1) by welding (last link) to trailer chassis (2) inaccordance with TM 9-237.3-107/(3-106 Blank)
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