Differential Housing Cover: Installation

2018 Ford Expedition MAX Limited, 4WDSECTION 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.

    GFD291399Courtesy of FORD MOTOR COMPANY
  2. 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 in illustration.

    Material: Silicone Sealant (WSS-M4G323-A8)

    GFD291400Courtesy of FORD MOTOR COMPANY
  3. Install the differential housing cover and the bolts.

    Torque: 24 lb.ft (32 Nm)

    GFD291401Courtesy of FORD MOTOR COMPANY
  4. If equipped. Connect the EOP sensor electrical connector.
    GFD291414Courtesy of FORD MOTOR COMPANY
  5. If equipped.

    1. Install the steering gear shield to the frame rail.
    2. Install the new push pins.

    GFD291415Courtesy of FORD MOTOR COMPANY
  6. If equipped. Install the oil drip tray to the cross member and the bolts.

    Torque: 62 lb.in (7 Nm)

    GFD291412Courtesy of FORD MOTOR COMPANY
  7. Connect the front differential breather hose.
    GFD291316Courtesy of FORD MOTOR COMPANY
  8. Install the engine oil pan skid plate and the bolts.

    Torque: 30 lb.ft (40 Nm)

    GFD291299Courtesy of FORD MOTOR COMPANY
  9. If equipped. Install the skid plate and the bolts.

    Torque: 30 lb.ft (40 Nm)

    GFD291298Courtesy of FORD MOTOR COMPANY
  10. If removed. Install the engine skid plate and the bolts.

    Torque: 30 lb.ft (40 Nm)

    GFD291297Courtesy of FORD MOTOR COMPANY
  11. If equipped. Install the front underbody skid plate and the bolts.

    Torque: 35 lb.ft (48 Nm)

    GFD291411Courtesy of FORD MOTOR COMPANY
  12. If equipped. Install the spacer to the front underbody skid plate and the bolts.

    Torque: 41 lb.ft (55 Nm)

    GFD291410Courtesy of FORD MOTOR COMPANY
  13. Fill the front differential assembly with clean fluid. Differential Fluid Level CheckΒ .
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.