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Home >> Jeep >> 1990 >> Wagoneer >> Repair and Diagnosis >> Drivelines & Axles >> Differentials & Drive Axles >> Drive Axle - 7.56" (7 9/16"), 8.25", & 8.5" >> Adjustments >> Pinion Bearing Preload Adjustments

Pinion Bearing Preload Adjustments

  1. Apply oil to seal. Install seal, yoke, washer and original nut. Tighten pinion nut only enough to remove bearing end play. Remove original nut, washer and yoke and install new collapsible spacer. Reassemble components, including oil slinger (if equipped).
    CAUTION: Never reuse collapsible spacer.
  2. On Cherokee, Comanche and Wrangler, place an INCH lb. torque wrench on pinion nut. Rotate pinion and note rotating torque. Hold yoke with Yoke Support Wrench (J-8614-1). Tighten pinion nut until preload torque is 15-25 INCH lbs. (2-3 N.m). Pinion nut torque should exceed 210 ft. lbs. (285 N.m). If not, replace collapsible spacer.
    CAUTION: DO NOT  overtighten pinion nut. If preload torque is exceeded, collapsible spacer must be replaced and preload reset.
  3. On Grand Wagoneer axles, hold yoke with Yoke Support Wrench (J-8614-1). Torque yoke nut to at least 200 ft. lbs. (271 N.m). Slowly tighten pinion nut until preload torque is 10-20 INCH lbs. (1-2 N.m), or 20-40 INCH lbs. (2-5 N.m) with new bearings.
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