Lincoln Navigator: Rear Drive Axle/Differential - Vehicles With: Ford 9.75 Inch Ring Gear / Differential Fluid Level Check. General Procedures

Lincoln Navigator 2018-2026 Workshop Manual / Driveline / Rear Drive Axle/Differential - Vehicles With: Ford 9.75 Inch Ring Gear / Differential Fluid Level Check. General Procedures

Materials

Name	Specification
Motorcraft® SAE 75W-85 Premium Synthetic Hypoid Gear Lubricant XY-75W85-QL	WSS-M2C942-A

Check

With the vehicle in NEUTRAL, position it on a hoist.
Refer to: Jacking and Lifting (100-02 Jacking and Lifting, Description and Operation).

Remove the differential fluid fill plug.

Check and top off the differential with clean differential gear lubricant.
Refer to: Specifications (205-02B) .
Material: Motorcraft® SAE 75W-85 Premium Synthetic Hypoid Gear Lubricant / XY-75W85-QL (WSS-M2C942-A)

Install the differential fluid fill plug.
Torque: 38 lb.ft (51 Nm)

Differential Draining and Filling. General Procedures

Draining With the vehicle in NEUTRAL, position it on a hoist. Refer to: Jacking and Lifting (100-02 Jacking and Lifting, Description and Operation)...

Ring Gear Backlash Adjustment. General Procedures

Special Tool(s) / General Equipment 205-220Installer, Differential ShimTKIT-1985-FH 307-003 (T57L-500-B) Holding Fixture, Transmission Dial Indicator Copper Hammer Adjustment Remove the rear axle assembly...

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Lincoln Navigator 2018-2026 Workshop Manual: Stoplamps. Diagnosis and Testing

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Lincoln Navigator 2018-2026 Workshop Manual: Transmission Range (TR) Sensor. Removal and Installation

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Wheel to Hub Runout Minimization. General Procedures

Check

NOTE: Wheel-to-hub optimization is important. Clearance between the wheel and hub can be used to offset or neutralize the Road Force® or run-out of the wheel and tire assembly. For every 0.001 inch of wheel-to-hub clearance, the Road Force® can be affected between 1 and 3 pounds depending on the tire stiffness.

NOTE: The example below illustrates how the clearance between the wheel and the hub can be used to offset the high spot of radial run-out or Road Force®. Following the procedure will make sure of the best optimization.

Position the wheel and tire assembly on the vehicle so that the high spot location of radial run-out or Road Force® is at the 6 o'clock position and