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Home >> Dodge and Ram >> 2003 >> Durango Base, 5.9 Z, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 34 (Rear Axle - 8 1/4) >> Pinion Seal >> Installation

Pinion Seal: Installation

WARNING: This page is about a different car, the 2004 Dodge Dakota and 2003 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: The outer perimeter of the seal is pre-coated with a special sealant.
  1. Apply a light coating of gear lubricant on the lip of pinion seal.
  2. Install new  pinion seal with Installer C-4076-B and Handle C-4735-1 (Fig 1 )
    Fig 1: Pinion Seal Installer
    G02656180Courtesy of DAIMLERCHRYSLER CORP.
  3. Install companion flange on the end of the shaft with the reference marks aligned.
  4. Install bolts into two of the threaded holes in the companion flange 180° apart.
  5. Position Holder 6719 against the companion flange and install a bolt and washer into one of the remaining threaded holes. Tighten the bolts so Holder 6719 is held to the flange.
  6. Install companion flange on pinion shaft with Installer C-3718 and Holder 6719.
  7. Install the pinion washer and a new  pinion nut. The convex side of the washer must face outward.
    CAUTION: Do not exceed the minimum tightening torque when installing the companion flange retaining nut at this point. Damage to collapsible spacer or bearings may result.
  8. Hold companion flange with Holder 6719 and tighten the pinion nut to 285 N.m (210 ft. lbs.) (Fig 2 ). Rotate pinion several revolutions to ensure the bearing rollers are seated.
    Fig 2: Tightening Pinion Nut
    G02656181Courtesy of DAIMLERCHRYSLER CORP.
  9. Rotate pinion with an inch pound torque wrench. Rotating torque should be equal to the reading recorded during removal plus an additional 0.56 N.m (5 in. lbs.) (Fig 3 ).
    CAUTION: Never loosen pinion nut to decrease pinion bearing rotating torque and never exceed specified preload torque. If rotating torque is exceeded, a new collapsible spacer must be installed.
    Fig 3: Measuring Pinion Rotation Torque
    G02656182Courtesy of DAIMLERCHRYSLER CORP.
  10. If rotating torque is low use Holder 6719 to hold the companion flange (Fig 2 ) and tighten pinion nut in 6.8 N.m (5 ft. lbs.) increments until proper rotating torque is achieved.
    NOTE: The seal replacement is unacceptable if final pinion nut torque is less than 285 N.m (210 ft. lbs.).
    NOTE: The bearing rotating torque should be constant during a complete revolution of the pinion. If the rotating torque varies, this indicates a binding condition.
  11. Install propeller shaft with the installation reference marks aligned.
  12. Tighten companion flange bolts to 108 N.m (80 ft. lbs.).
  13. Install the brake drums.
  14. Check the differential housing lubricant level.
  15. Install wheel and tire assemblies and lower the vehicle.
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