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Home >> Chevrolet >> 1990 >> Step Van 7.4 N, Standard >> Repair and Diagnosis (Single Page) >> Drivelines & Axles >> Differentials & Drive Axles >> Differential - EATON Positive Traction >> Adjustments >> 1-Piece Case >> Right Side Gear Backlash

Right Side Gear Backlash

  1. Alternately assemble clutch plates. See Figure . Use grease to hold guide clips in place, and install guide clips on clutch plates.
  2. Install thrust washer, clutch plates and right side gear into case. Install pinion gears and thrust washers. Ensure they align with pinion shaft hole.
  3. Press side gear downward and install pinion shaft and lock screw. If side gear cannot be pressed down enough to install pinion shaft, install thinner thrust washer.
  4. Rotate pinion gear closest to lock screw or stop pin so one tooth is pointing downward (perpendicular to ring gear flange). Insert a screwdriver firmly between side gear and pinion shaft.
  5. Install dial indicator on ring gear flange, with indicator stem positioned on tooth of pinion gear closest to lock screw.
  6. Pull pinion gear against case and rotate pinion gear back and forth and note backlash reading. Repeat procedure on the opposite pinion gear. Backlash should be .002-.010" (.05-.25 mm).
  7. Change thrust washer thickness to obtain correct backlash. If backlash is greater than specification, use thicker thrust washer. If it is less than specification, use thinner thrust washer.
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