25/04/2023 14:05:44

Rear Oil Seal - Differential to Halfshaft Assembly - Small Drive Unit - LH (Remove & Replace)

Correction Code 40301202

Special tool(s) required for this procedure:

Part Number Description
1051509-00-A Output Seal Installation Tool
1454928-00-A TOOL, SEAL PULLER, ADJUSTABLE, MS/MX/M3
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Note
Technicians may use this tool or equivalent.
1057312-00-A Axle Extractor

Removal

  1. If the vehicle has air suspension, use Toolbox 3 to depressurize the air spring back to the reservoir (refer to procedure).
  2. On the touchscreen, touch Controls > E-Brake and Power Off > Tow Mode.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    Warning
    Once "Tow Mode" is selected, the vehicle is in Neutral.
  3. Remove the road wheel (refer to procedure).
  4. Remove the mid aero shield (refer to procedure).
  5. Drain the gearbox fluid (refer to procedure).
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    Note
    It is not necessary to drain the gearbox fluid if the vehicle is level throughout this procedure.
  6. Disconnect the toe link from the LH knuckle (torque 130 Nm).
  7. Disconnect the upper link from the knuckle (torque 140 Nm).
  8. Remove the park brake caliper (refer to procedure).
  9. Remove and discard the nut that attaches the LH rear stabilizer bar to the LH rear stabilizer bar end link (torque 70 Nm).
  10. Release the wheel speed sensor harness from the securing clip and bracket.
  11. Disconnect the shock absorber from the knuckle (torque 140 Nm).
    Tip: If necessary, use a pry bar or drift punch to align the lower shock bushing while removing the bolt.
  12. Use the axle extractor tool to release the halfshaft from the transmission. Rest the halfshaft on the lower control arm.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    Ensure that the axle extractor tool does not contact any of the differential retaining studs.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    Do not strain the brake hose or electrical wiring while pulling the knuckle.
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    Note
    Place suitable absorbent material around the affected area to absorb any fluid spillage.
  13. Protect the halfshaft's output flange oil seal face and spline to prevent damage.
  14. Using 1454928-00-A or an equivalent seal puller, remove the output shaft oil seal from the differential casing.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    Plug the transmission to prevent ingress of dirt or moisture.

Installation

Installation procedure is the reverse of removal, except for the following:
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Note
Replace discarded patch bolts and nyloc nuts.
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CAUTION
Ensure that the mating faces are clean and free from debris.
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CAUTION
Ensure that the bolt that secures the spring assembly to the knuckle is inserted towards the rear of the vehicle; the head of the bolt faces the front of the vehicle and the nut is tightened at the rear.
Tip: It might be helpful to lift the lower control arm with a floor jack to line up the rear suspension during reassembly. Do not torque the bolts at this time.
Warning IconA warning icon, calling your attention to a possibly risky situation
CAUTION
Only fully tighten suspension nuts and bolts when the vehicle is on a 4-post lift and the suspension is in the ride height position.
  • When installing the halfshaft(s) into the drive unit:
    • Make sure that the opening of the snap ring is facing towards the bottom of the drive unit.
    • Do not damage or displace the oil seal.
    • Verify that the halfshaft is fully seated:
      • Carefully push the halfshaft into the drive unit until there is an audible "click" from the halfshaft stub contacting the pinion shaft.
      • There will be a slight pulling sensation on the halfshaft as the halfshaft circlip locks into place.
      • Pull on the inner halfshaft cup to confirm that the circlip is locked into place. If the halfshaft detaches from the drive unit then reinstall the halfshaft and then test that it is fully seated.
  • Check the differential casing oil seal register for burrs and other damage.
  • Using the 1051509-00-A output seal installation tool, install a new output shaft oil seal.
  • Check and top up gearbox fluid.
  • Refer to the Alignment Requirement tables to determine whether an EPAS alignment check (EC) or four wheel alignment check (AC) is necessary. If performed, add the alignment check/adjust as a separate activity. See Alignment Requirement - Suspension.