TM 9-2350-287-20-12-25. INSPECTION INSTRUCTIONS.1.Always clean parts before inspecting for serviceability. Dirt and grease can hide damage that may make anitem unusable,2.Inspect bearings in accordance with TM 9-214, Inspection and Care of Bearings.3.Inspect all mounting hardware for serviceability. Replace any damaged screws, nuts, or washers. Alwaysreplace Iockwashers, self-locking nuts, cotter pins, and spring pins, if removed.4.Inspect threaded holes for damage or knurled threads, Repair damaged threads with a thread restorer file bychasing or by using a tap and die.5.Always measure a component when tolerances are given, to make sure the component is still serviceable.Tolerances will be given in the maintenance procedures when applicable.2-26. REPAIR INSTRUCTIONS.1.Complete disassembly is not always necessary to make a repair. Exercise good judgment in order to keepdisassembly and assembly to a minimum.CAUTION2.3.4.5.6.7.Never scribe marks on bearing surfaces. Damage to the bearing will result.Mark gears on mating teeth with scribe marks or with dye, indelible ink, or paint, to be certain of correctpositioning at assembly. Avoid using chalk or crayon because they smudge and are easily wiped off.During assembly, subassemblies should be assembled first, combined into major components wherepossible, and then installed to forma single component.Records to provide repair and replacement data and statistics should be prepared carefully and be maintainedaccording to DA Pam 738-750.When assembling components, replace damaged keys with new ones.Gaskets, nonmetallic packings, preformed packings, seals, and bearings must be replaced if they areremoved. Springs must be replaced if broken, kinked, stretched, or cracked.Remove burrs from metal items with a stone or file. Remove burrs on closely fitting mating surfaces by lappingthe surfaces with abrasive-grade compound.2-27. TAGGING HOSES, LINES, AND TUBES.Always tag hoses, lines, and tubes when they are being disconnected so they can be identified easily and connectedcorrectly. Use the circuit number for the hose, line, or tube, if given, or an easily recognized term (e.g.,’’fuel filter in.. .“)that identifies the type of fluid in the hose, what it connects to, and whether it is a supply or return line.2-437
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