TM-9-2350-277-40&P Sustainment Maintenance Manual M113A3 M577A3 M1064A3 M1068A3 M58 Download
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7. Oil seals. a. Inspect feather edge of oil seals for tears, fraying, hardening, and cracking. b. Replace metal covered oil seals when there are signs of damage or oil leakage. 8. Inspect core holes for signs of leakage. Replace damaged core hole plugs. 9. Inserts. a. Inspect inserts for cracks and stripped or damaged threads. b. Check inserts for loose fit. c. Inspect armor mounting inserts and hull screw holes for loose or missing plugs and setscrews, as required. 10. Grease seals, preformed packing, and gaskets. a. Inspect seals that are composition type, rings, and preformed packing for wear, brittleness, cracks, cuts, and damage. b. Inspect lip seals for cracks, wear, cuts, and brittleness. Inspect springs and seal shells for damage. c. Gaskets and seals on electrical parts may be reused. Inspect gaskets and seals for wear, nicks, cuts, and torn or missing gasket material. Replace gasket, if needed. 11. Inspect splined parts for burrs, wear, and twisted, cracked or broken splines. 12. Inspect all threaded parts for burrs, and stripped or damaged threads. 13. Inspect retaining rings for nicks, burrs, defects, loss of tension, or wear. 14. Inspect springs for wear, defects, breaks, and loss of tension or compression. Inspect springs using a spring tester. 15. Inspect shafts and spindles for excessive wear, binding, scores, cracks, burrs, and obstructed oil passages. 16. Electrical parts. a. Inspect electrical parts before you install them. Look for mildew and corroded or burned parts. b. Inspect electrical parts for pinched or loose wires, and for cracked or broken wires, circuit cards, relays, and connectors. c. Inspect insulation and heat shrink tubing for cracks, tears, burns, or missing material. REPAIR General repair procedures are given in the following steps. Special repairs are covered in the task. After repair, clean all parts well. 1. Castings. a. Replace all cracked or broken castings. b. Repair minor damage to machined surfaces of castings with crocus cloth. Replace any part with defects that cannot be corrected or which will impair function. c. Repair minor surface bends by working bent surface of casting across sheet of crocus cloth on surface plate. Replace bent castings which would impair assembly or function. d. Repair damaged pipe or screw threads with correct tap or die. 2. See TM 9-214 for inspection and maintenance of ball bearings. 3. See TM 9-214 for inspection and maintenance of needle roller bearings. TM 9-2350-277-40&P 0004 0004‐7