TM 5-5420-278-24&P0018 000018 00-38Table 2. Unit Preventive Maintenance Checks and Services for Interior Bay (Contd).ITEM TOITEMCHECK/EQUIPMENT NOTNO.INTERVALSERVICEPROCEDUREREADY/AVAILABLE IF:2~3122Semi-Opposite end annuallyof bayRepeat items 4 through 21.20Semi-Right foldlock annuallyassembly (2) and brackets (1)Inspect right foldlock assembly forstructural damage and proper movement.Damage preventsfoldlock fromsecuring ponton.21Semi-Left annuallyouter ponton side skin surface (3)a. Inspect surface area for punctures,holes, tears, seam ruptures, cracks, andbroken welds.b. Inspect seams for cracked or brokenwelds.a. Damage whichcumulatively addsup to a holeapproximately .26 in. (.66 cm) indiameter (the sizeof a typical pen orpencil).b. Cracked orbroken weldsnoted.
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