TM 9-2350-247-34PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS), INCLUDINGLUBRICATION INSTRUCTIONS — Continued0005 002) Inspect electrical parts for pinched or loose wires, and for cracked or broken wires, circuit cards, relays, andconnectors.3) Inspect insulation and heat shrink tubing for cracks, tears, burns, or missing material.REPAIR10. GENERAL REPAIR. General repair procedures are given in the following steps. Special repairs are covered in thetask. After repair, clean all parts well.a.CASTINGS.1) Replace all cracked or broken castings.2) Repair minor damage to machined surfaces of castings with crocus cloth (WP 0080 00, Item 1). Replace anypart with defects that cannot be corrected or which will impair function.3) Repair minor surface bends by working bent surface of casting across sheet of crocus cloth (WP 0080 00, Item1) on surface plate. Replace bent castings which would impair assembly or function.4) Repair damaged pipe or screw threads with correct tap or die.b.BALL BEARINGS. See TM 9-214 for inspection and maintenance of ball bearings.c.NEEDLE ROLLER BEARINGS. See TM 9-214 for inspection and maintenance of needle roller bearings.d.STUDS.1) Replace all bent or loose studs, or studs which show signs of stretching.2) Repair minor thread damage with standard thread chaser.3) To remove studs, back out studs slowly with stud extractor to avoid heating and possible seizure. If studs arebroken too short to use extractor, drill and extract studs with suitable remover. A short stud may be removed bywelding nut to stud and removing with wrench.4) To replace studs, lightly apply antiseize compound to stud before you install it. Only standard studs aresupplied for repair parts. If threaded hole is damaged beyond repair, drill and tap damaged hole. Installthreaded insert in tapped hole.e.GEARS.1) Replace gears that have worn, pitted or gouged teeth.2) Remove sharp burrs from gear teeth with crocus cloth (WP 0080 00, Item 1) dipped in cleaning compound(WP 0080 00, Item 49).CAUTIONDamaged housing bore can cause equipment failure. Do not damage housing bore when cuttingbushings.NOTEDo not remove bushings and bushing-type bearings unless replacement is necessary andauthorized. Removal usually damages these parts.f.BUSHINGS AND BUSHING-TYPE BEARINGS.1) Replace bushings and bushing-type bearings if they are loose, scored, or have color change due to heat. Whenyou replace bushings and bushing type bearings, check nearby parts for damage or wear.0005 00-8
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