TM 5-5420-278-24&P0018 000018 00-10Table 1. Unit Preventive Maintenance Checks and Services for Ramp Bay (Contd).ITEM TOITEMCHECK/EQUIPMENT NOTNO.INTERVALSERVICEPROCEDUREREADY/AVAILABLE IF:215Semi-Lower lock-annuallydrive assembly (1), cylinder, and yokea. Inspect jackscrew threads for cracks,burrs, nicks, and deformation.b. Inspect trunnions and pin for cracks.c. Inspect bumpers and support bracketsfor cracks, broken welds, and deformation.d. Inspect cylinders for leaks.e. Inspect hoses and fittings for cracks,compression, and leakage.f. Ensure cylinder functions properly inconjunction with hand pump.g. Inspect for cracks, deformation, andelongation of eye.a. Jackscrew willnot extend orretract pin properly.b. Cracks or brokenwelds noted.c. Cracks, brokenwelds, ordeformation noted.d. Any Class IIIfluid leak noted.e. Any Class IIIfluid leak noted.f. Cylinder does notfunction properly.g. Cracks noted ordeformationprevents properoperation. Holeelongation greaterthan 50% of holediameter noted.16Semi-Right front annuallyouter ponton end skin surface (2)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 size ofa typical pen orpencil).b. Cracked orbroken welds noted.1
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