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Home >> GMC >> 1991 >> Value Van 7.4 N >> Repair and Diagnosis >> Drivelines & Axles >> Differentials & Drive Axles >> Drive Axle - Gm 10 1/2" >> Overhaul >> Side Bearing Preload

Side Bearing Preload

  1. Place lubricated bearing cups onto differential side bearings in original locations, and place differential assembly into carrier. Install bearing caps in their original positions, and tighten cap bolts until just snug.
  2. Using Bearing Backlash Wrench (J-24429), loosen right side bearing adjusting nut, and tighten left side adjusting nut until ring gear just contacts drive pinion (zero lash point). Back off left adjusting nut 2 slots to locking position. Install left adjusting nut lock and lock bolt. DO NOT  tighten bolt.
  3. Tighten right adjusting nut until case is in firm contact with left adjusting nut. Loosen right adjusting nut until it is free of bearing. Retighten right nut until it just contacts bearing. Tighten right adjusting nut an additional 2 slots (used bearings) or 3 slots (new bearings) to properly preload differential side bearings. Install adjusting nut lock and lock bolt. DO NOT  tighten bolt. Proceed with BACKLASH & FINAL ASSEMBLY .
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