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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" >> Overhaul >> Reassembly >> Pinion Gear

Pinion Gear

  1. Install oil slinger (front axle). Press rear bearing on pinion gear shaft. Place original shim (or see ADJUSTMENTS  ) in rear bearing bore and install rear bearing cup.
    NOTE: Chamfered side of shim must be installed toward bottom of rear bearing bore.
  2. On Grand Wagoneer, install bearing preload shim(s). On all axles, install front bearing cup into housing. Install pinion gear. Install front bearing over pinion gear. Apply oil to seal. Install seal, yoke, washer and original pinion nut. Tighten nut to remove bearing end play ONLY  .
  3. Remove original pinion nut, washer, yoke and front bearing. On Cherokee, Comanche and Wrangler, install new collapsible spacer on pinion. Reinstall components in order and front oil slinger (if equipped) using the new pinion nut. Preload pinion bearing. See PINION SEAL & YOKE  .
  4. Make sure pinion bearing preload to 15-35 INCH lbs. (1.3-4.0 N.m). Preload is measured as the amount of torque needed to rotate the pinion gear with an INCH lb. torque wrench.
  5. 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). Check pinion bearing preload torque. 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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