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PRECAUTIONS

Inspection (cont'd.)

    • 3.

      Check axial clearance of gears. Where exces- sive clearance is found, check gear snap ring, washer, spacer, and gear hub for excessive wear. Maintain .005” to .012” axial clearance between mainshaft gears.

  • C.

    SPLINES

    • 1.

      Check splines on all shafts for abnormal wear. If sliding clutch gears, companion flange, or clutch hub have worn into the sides of the splines, replace the specific shaft affected.

  • D.

    TOLERANCE/LIMIT WASHERS

    • 1.

      Check surfaces of all limit washers. Washers scored or reduced in thickness should be replaced.

  • E.

    REVERSE IDLER GEAR ASSEMBLIES

    • 1.

      Check for excessive wear from action of roller bearings.

  • F.

    GRAY IRON PARTS

    • 1.

      Check all gray iron parts for cracks and breaks. Replace or repair parts found to be damaged. Heavy castings may be welded or brazed pro- vided the cracks do not extend into bearing bores or bolting surfaces. When welding, how- ever, never place the ground so as to allow cur- rent to pass through the transmission.

  • G.

    CLUTCH RELEASE PARTS

    • 1.

      Check clutch release parts. Replace yokes worn at cam surfaces and bearing carrier worn at contact pads.

    • 2.

      Check pedal shafts. Replace those worn at bushing surfaces.

  • H.

    SHIFT BAR HOUSING ASSEMBLY

    • 1.

      Check for wear on shift yokes and blocks at pads and lever slot. Replace excessively worn parts.

    • 2.

      Check yokes for correct alignment. Replace sprung yokes.

    • 3.

      Check Iockscrews in yokes and blocks. Tighten and rewire those found loose.

    • 4.

      If housing has been disassembled, check neutral notches of shift bars for wear from in- terlock balls.

  • I.

    GEAR SHIFT LEVER HOUSING ASSEMBLY

    • 1.

      Check spring tension on shift lever. Replace tension spring and washer if lever moves too freely.

    • 2.

      If housing is disassembled, check spade pin and corresponding slot in lever for wear. Re- place both parts if excessively worn.

  • J.

    BEARING COVERS

    • 1.

      Check covers for wear from thrust of adjacent bearing. Replace covers damaged from thrust of bearing outer race.

    • 2.

      Check bores of covers for wear. Replace those worn oversize.

  • K.

    OIL RETURN THREADS AND SEALS

    • 1.

      Check oil return threads in front bearing cover. If sealing action of threads has been destroyed by contact with input shaft, replace bearing cover.

    • 2.

      Check oil seal in rear bearing cover. If sealing action of lip has been destroyed, replace seal.

  • L.

    SLIDING CLUTCHES

    • 1.

      Check all shift yokes and yoke slots in sliding clutches for extreme wear or discoloration from heat.

    • 2.

      Check engaging teeth of sliding clutches for partial engagement pattern.

  • M.

    SYNCHRONIZER ASSEMBLY

    • 1.

      Check synchronizer for burrs, uneven and ex- cessive wear at contact surface, and metal particles.

    • 2.

      Check blocker pins for excessive wear or looseness.

    • 3.

      Check synchronizer contact surfaces on the auxiliary drive and low range gears for exces- sive wear.

  • N.

    O - R I N G S

    • 1.

      Check all O-rings for cracks or distortion. Re- place if worn.

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