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Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> External Pages >> Different car >> Section 7 (Differential & Driveline) >> Front Axle - 175 FIA >> Adjustments >> Adjustment >> Pinion Bearing Preload

Pinion Bearing Preload

WARNING: This page is about a different car, the 2006 Dodge Magnum, 2006 Dodge Charger, and 2006 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Pinion bearing preload is controlled and adjusted by means of a select-thickness spacer sandwiched between the pinion head and tail bearing cones.
Fig 1: Pinion Housing Bolts
GC0014198Courtesy of DAIMLERCHRYSLER CORP.
  1. Remove pinion housing assembly from axle housing.
    Fig 2: Measure Pinion Housing Assembly Turning Torque
    GC0014214Courtesy of DAIMLERCHRYSLER CORP.
  2. Using a dial-type torque wrench (1), measure pinion housing rotating torque. Rotating torque should be within 130-260 N.cm (12-23 in. lbs.).  If rotating torque is below this range, disassemble pinion housing, measure and install a slightly thicker spacer (1), reassemble and reverify. If rotating torque is above this range, disassemble pinion housing, install a slightly thinner spacer, reassemble and reverify rotating torque.
    Fig 3: Pinion Flange Nut Removal/Installation
    GC0014195Courtesy of DAIMLERCHRYSLER CORP.
  3. Using Tool 6958 (2), remove pinion flange nut.
    Fig 4: Pinion Flange Removal
    GC0014196Courtesy of DAIMLERCHRYSLER CORP.
  4. Using Puller 1026 (1), remove pinion flange.
    Fig 5: Press Pinion Gear Out of Housing
    GC0014200Courtesy of DAIMLERCHRYSLER CORP.
  5. Press pinion gear (2) out of housing.
    Fig 6: Pinion Bearing Spacer
    GC0014203Courtesy of DAIMLERCHRYSLER CORP.
  6. Remove pinion bearing preload spacer (1).
    Fig 7: Measure Pinion Bearing Spacer
    GC0014204Courtesy of DAIMLERCHRYSLER CORP.
  7. Measure spacer (1) and correct per rotating torque measurement.
    Fig 8: Pinion Bearing Spacer
    GC0014203Courtesy of DAIMLERCHRYSLER CORP.
  8. Install proper pinion bearing preload spacer (1).
    Fig 9: Install Pinion Tail Bearing Cone
    GC0014223Courtesy of DAIMLERCHRYSLER CORP.
  9. Install pinion gear/bearing assembly to housing. Using Tool L-4507 (1), press pinion tail bearing (2) onto shaft until it bottoms.
    Fig 10: Install Pinion Flange
    GC0014224Courtesy of DAIMLERCHRYSLER CORP.
  10. Using Tool L-4507 (1), press on pinion flange (2).
    Fig 11: Pinion Flange Nut Removal/Installation
    GC0014195Courtesy of DAIMLERCHRYSLER CORP.
  11. Install and torque pinion flange nut to 475 N.m (350 ft. lbs.).
    Fig 12: Pinion Housing Bolts
    GC0014198Courtesy of DAIMLERCHRYSLER CORP.
  12. Install pinion housing assembly and depth shim to axle assembly.
  13. Install and torque pinion housing-to-axle housing bolts (1) to 34 N.m (25 ft. lbs.).
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