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Home >> Ford >> 1996 >> Aerostar Van Window >> Repair and Diagnosis >> Drivelines & Axles >> Differentials & Drive Axles >> Drive Axle - 7.5" Ring Gear Differentials >> Overhaul >> Differential Assembly >> Pinion Bearing Preload

Pinion Bearing Preload

  1. Place pre-selected pinion shim on pinion. Press rear pinion bearing on pinion. Ensure bearing and pinion shim are firmly seated against shoulder of pinion shaft.
  2. Install NEW  collapsible spacer on pinion. Lubricate bearings with axle lubricant. Install front pinion bearing and oil slinger (if equipped) in differential housing assembly.
  3. Using Oil Seal Installer (T79P-4676-A ), install NEW  pinion oil seal. Lubricate lips of pinion oil seal with grease. From rear of differential housing assembly, install pinion into front pinion bearing. Lubricate pinion flange splines with oil. Install pinion flange on pinion with reference marks aligned.
    CAUTION: DO NOT  hammer pinion flange or use power tools to install pinion flange.
  4. Install NEW  pinion nut. DO NOT  reuse pinion nut. Hold pinion flange and gradually tighten pinion nut. Rotate pinion while tightening pinion nut to ensure proper seating of bearing.
  5. Using INCH-lb. torque wrench, measure pinion bearing preload at different stages when tightening pinion nut. Tighten pinion nut to obtain correct bearing preload. See DIFFERENTIAL SPECIFICATIONS  .
  6. If bearing preload is exceeded, replace collapsible spacer, install NEW  pinion nut, and repeat procedures. DO NOT  exceed pinion nut torque specification. See TORQUE SPECIFICATIONS  .
CAUTION: DO NOT  back off pinion nut to reduce pinion rotating torque. If reduced pinion bearing preload is required, install a NEW  collapsible spacer, and retighten pinion nut to obtain correct bearing preload.
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