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Lincoln Navigator: Front Drive Axle/Differential / Differential Housing Cover. Removal and Installation

Lincoln Navigator 2018-2025 Workshop Manual / Driveline / Front Drive Axle/Differential / Differential Housing Cover. Removal and Installation

Materials

Name Specification
Motorcraft® Ultra Silicone Sealant
TA-29
WSS-M4G323-A8
 

Removal

  1. With the vehicle in NEUTRAL, position it on a hoist.
    Refer to: Jacking and Lifting (100-02 Jacking and Lifting, Description and Operation).
  1. If equipped.
    Remove the bolts and the spacer from the front underbody skid plate.
  1. If equipped.
    Remove the bolts and the front underbody skid plate.
  1. If equipped.
    Remove the bolts and the engine skid plate.
  1. If equipped.
    Remove the bolts and the skid plate.
  1. Remove the bolts and the engine oil pan skid plate.
  1. If equipped.
    Remove bolts and the oil drip tray from the cross member.
  1. If equipped.
    1. Remove and discard the push pins.
    1. Remove the steering gear shield from the frame rail.
  1. Disconnect the front differential breather hose and position aside.
  1. If equipped.
    Disconnect the EOP sensor electrical connector.
  1. Remove the differential cover bolts and differential cover.

Installation

  1. NOTE: Remove all of the silicone gasket and make sure the surfaces are free of oil before applying the new silicone gasket.

    Clean the gasket mating surface of the axle and the differential housing cover.
  1. NOTE: The differential housing cover must be installed within 15 minutes of application of the silicone, or new sealant must be applied. If possible, allow one hour before filling with lubricant to make sure the silicone sealant has correctly cured.

    Apply a new continuous bead of sealant to the differential housing cover as shown.
    Material: Motorcraft® Ultra Silicone Sealant / TA-29 (WSS-M4G323-A8)
  1. Install the differential housing cover and the bolts.
    Torque: 24 lb.ft (32 Nm)
  1. If equipped.
    Connect the EOP sensor electrical connector.
  1. If equipped.
    1. Install the steering gear shield to the frame rail.
    1. Install the new push pins.
  1. If equipped.
    Install the oil drip tray to the cross member and the bolts.
    Torque: 62 lb.in (7 Nm)
  1. Connect the front differential breather hose.
  1. Install the engine oil pan skid plate and the bolts.
    Torque: 30 lb.ft (40 Nm)
  1. If equipped.
    Install the skid plate and the bolts.
    Torque: 30 lb.ft (40 Nm)
  1. If removed.
    Install the engine skid plate and the bolts.
    Torque: 30 lb.ft (40 Nm)
  1. If equipped.
    Install the front underbody skid plate and the bolts.
    Torque: 35 lb.ft (48 Nm)
  1. If equipped.
    Install the spacer to the front underbody skid plate and the bolts.
    Torque: 41 lb.ft (55 Nm)
  1. Fill the front differential assembly with clean fluid.
    Refer to: Differential Fluid Level Check (205-03 Front Drive Axle/Differential, General Procedures).

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    Diagnostic Methods. Description and Operation

    This document provides critical diagnostic knowledge required for successful repair outcomes. It identifies technical competencies expected by users of this manual.

    Ford Diagnostic Assumptions

    Ford diagnostics assume the vehicle concern described by the test title is currently present. Exceptions to this rule are noted in each test. Do not replace modules or other components as directed by a diagnostic if the concern is not present at the time of testing.

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