TM-9-2520-254-34 Direct Support for M113 TX100-1 Transmission 2520-00-066-4240 Download

whicoh defects which cannot be corrected will impair the operation of the transmission. (4) Inspect threaded openings for damaged threads. Chase damaged threads with correct size tap. (5) Replace housings or other cast parts that are cracked or broken. b. Roller or Ball Bearings. Refer to TM 9-214 for proper cleaning and inspection procedures. c. Needle-Type Roller Bearings.inspect bearings for free and smooth rotation, broken or missing rollers. and tightness of fit in bore. If defects are found, replace bearing, using proper replacer. NOTE Do not remove needle bearings unless replacement is necessary, since removal usually results in destruction of the bearings. d. Bushings. Bushing-Type Bearings, and Thrust Washers. (1) Inspect bushings and bushing-type bearings for size, scoring and out-of-roundness, burs, sharp edges, and evidence of seizing. Minor scores, scratches, and sharp edges may be removed with crocus cloth. Out-of-round, deeply scored, or worn parts should be discarded. NOTE Do not remove bushings and bushing-type bearings unless replacement is necessary, as removal usually damages these parts. (2) Remove bushings and bushing-type bearings by using a puller or press when possible. Bushings in blind holes may require removal by sawing or the use of a narrow cape chisel. CAUTION If necessary to cut out a bushing, do not damage the bore into Which it fits. (3) Inspect thrust washers for wear, distortion, scores and burs. Correct minor defects. Replace parts that are worn, deformed, or scored. e. Oil Seals. Performed Packings. and Gaskets. (1) Inspect hook-type seal rings for wear, distortion, and broken hooks. Replace defective seal rings. (2) Inspect composition-type seal rings or packings for wear. brittleness. cracks, cuts, deformation, and deterioration. Replace defective seals. (3) Inspect lip-type seals for cracks, wear, cuts, and brittleness. Inspect springs and seal shells. Replace any seal found defective. Use a non- hardening sealing compound on the outside diameter of the seal to prevent leakage. NOTE Removal of a seal will usually damage it; inspect rigidly before reusing. (4) Replace all flat-type gaskets. f. Gears. (1) Inspect gears for burs, wear. broken teeth, and pitting at tooth contact areas. (2) Inspect bores of planetary pinions for wear and pitting of bearing contact areas. (3) Remove burs, using a soft honing stone. Replace gears that are excessively worn or pitted. g. Splined Parts. (1) Inspect splined parts for twisted or broken splines, burs, and excessive wear. (2) Remove burs. using a soft honing stone. Replace parts which have twisted or broken splines or excessive wear. h. Clutch Plates. (1) Inspect nonmetallic plates for excessive wear, cracks, breaks, and deep scoring. Replace plates if such defects are found. (2) Inspect bronze-faced steel plates for burs, imbedded metal particles, severely pitted faces. excessive wear. cracks, distortion, and damaged spline teeth. Remove burs, using a soft honing stone. Replace plates which have other defects. (3) Inspect steel plates for burs, scoring, excessive wear, distortion, imbedded metal, galling, cracks, breaks, and damaged spline teeth. Remove burs and minor surface irregularities, using a soft honing stone. Replace plates which have other defects. i. Threaded Parts. (1) Inspect all threaded parts for burs and stripped or damaged threads. (2) Replace all parts which have stripped threads or damage which cannot be repaired by chasing the threads with a tap or die of the proper size. j. Snap Rings. Inspect snap rings for nicks. burs. distortion, and wear. Discard snap rings which are defective. k. Springs. Inspect springs for wear, distortion, breaks. evidence of overheating, and loss of tension or compression. Discard defective springs. Refer to table 6-2 for spring specifications. 1. Shafts and Spindles. (1) Inspect shafts and spindles for excessive wear. bending. scores. cracks, burs, and obstructed oil passages. (2) Remove burs and minor surface irregularities with crocus cloth or a soft honing stone. Remove obstructions by probing with soft wire or with compressed air. Discard parts with other Defects. m. Ball-Type Valves. (1) Inspect steel balls for rust. pitting. and grooving. Inspect nylon balls for nicks, scratches, grooving, and chipping, Discard balls which will not seat properly. 5-2