TM 5-4220-225-14Table 2-1. Operator Preventive Maintenance Checks and Services.NOTEWithin designated intervals, these checks are to be performed in the order listed.If the equipment must be kept in continuous operation, check and service only those items that can bechecked and serviced without disturbing operation. Make the complete checks and services when theequipment can be shut down.B - BeforeD - DuringA - AfterQ - QuarterlyIntervalItemItem to be Inspected.Equipment Will BeNo.BDAQProcedureReported Not Ready IfNOTEPerform quarterly planned maintenance whenhelmet is stowed for prolonged periods.HELMET ASSEMBLY1.Exterior. Visually inspect to ensure all componentsand parts are properly installed and in goodcondition.2.Shell and Base.a. Inspect the shell and base for dirt, corrosion,dents, cracks or chips, and sealant deterioration.b. Visually inspect for loose or missing base-to-shellInspection reveals any of themounting screws.defects sighted above orany defect that renders thehelmet inoperable.3.Viewport Assemblies.a. Inspect the viewports for scratches, chips andA scratch 1/32-inch deepcracks. Smaller scratches do not constitute aand more than 1-inch longsafety hazard but may obscure vision.If on the requires replacement ofinside surface, it can be reversed and continuedviewport. If both surfacesin use. Switching the left and right viewports willare marred so that vision isreverse these surfaces.obscured, replace the view-port. If the viewport iscracked or chipped any-where, replace it.2-5
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business
