TM 9-2350-261-20-1ItemNo.78Table 2-1. Unit Level Preventive Maintenance Checks and Services for M113A2 FOVIntervalSemi-AnnualSemi-AnnualItem ToBeInspectedTrackPin/NutsTrackGrouserProcedureCheck track pin nuts for looseness orcracks. Replace cracked nuts. Checktrack pins for stripped threads. Re-place stripped track pins. Tightenloose nuts to 115-135 Ib-ft (156-183N.m)torque. Use torque wrench(Item96, Appendix D).Check grouser for wear or cracks onboth tracks.Replace track shoe ifgrouser measures less than 1/8”(3mm) in height or is cracked.Not MissionCapable IfAny pin/nuts thatare cracked,broken,bent,stripped,missing or protrud-ing.Grouser is worn be-low 1/8''or cracked.2-48 Change3
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