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Home >> GMC >> 1983 >> Forward Control 5.7 M, Automatic, 475/M40 >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Overhaul - THM 400 >> Component Disassembly & Reassembly >> Gear Unit >> Inspection

Gear Unit: Inspection

  1. Check all components for excessive wear or damage. Ensure lubrication holes are open. Check teeth and bearing surfaces. Inspect splines and gears.
  2. Pinion end play range is .009-.024" (.23-.61 mm). Check roller clutch assembly for damage to rollers, springs, or clutch cage. Inspect sun gear and sun gear shaft for damage or wear to splines, teeth, and bushings.
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