This procedure covers the removal and replacement of the transmission mount on a 2011-2014 Ford F-150 with 3.5L EcoBoost engine and 4WD.

Warnings

Tools required

Parts

• Transmission mount × 1 — Use OEM specification

Preparation

1. Park vehicle on level surface and set parking brake
2. Chock rear wheels securely
3. Raise front of vehicle and support on jack stands at frame rails
4. Allow engine and transmission to cool completely if recently driven
5. Inspect transmission mount area and spray fasteners with penetrating oil if corrosion is present

Procedure

1. 1

   Locate transmission mount
   Position yourself under the vehicle and locate the transmission mount assembly. On 4WD F-150s with 3.5L EcoBoost, the transmission mount is located at the rear of the transmission, bolted to the transmission housing and to a crossmember that spans the frame rails.
2. 2

   Support transmission
   Position a transmission jack or floor jack with a wood block under the transmission pan. Raise jack until it just contacts the transmission but does not lift it. The jack should be positioned to support the transmission weight once the mount is removed.
   ⚠Ensure jack is centered and stable. Use a wood block to distribute load across the transmission pan and prevent damage.
3. 3

   Remove crossmember-to-frame bolts
   Locate the bolts securing the transmission crossmember to the frame rails on both sides. There are typically two bolts per side. Remove all four crossmember-to-frame bolts using appropriate socket and ratchet. Support the crossmember as you remove the final bolts.
   Torque spec

   Crossmember Bolts95 Nm (70 lb-ft)
4. 4

   Remove mount-to-transmission bolts
   Locate the bolts that secure the transmission mount to the transmission housing. Remove these bolts using appropriate socket and extension. Keep track of bolt locations if they are different lengths.
   Torque spec

   Transmission Mount Bolts65 Nm (48 lb-ft)
5. 5

   Slightly raise transmission
   Using the transmission jack, carefully raise the transmission 1-2 inches to relieve pressure on the mount. Raise slowly and watch for any binding of transmission lines, wiring, or shift linkage.
   ⚠Raise transmission only enough to clear the mount. Excessive lifting may damage connected components.
6. 6

   Remove transmission mount and crossmember
   With the transmission raised slightly, remove the transmission mount from the transmission. Then lower and remove the crossmember assembly. If the mount is attached to the crossmember with separate bolts, remove those bolts and separate the mount from the crossmember.
   Torque spec

   Mounting Bolts31 Nm (23 lb-ft)
7. 7

   Inspect mounting surfaces
   Clean the mounting surfaces on both the transmission and crossmember using a wire brush. Inspect the transmission mounting pad for cracks or damage. Check crossmember for rust, cracks, or deformation. Replace crossmember if damaged.
8. 8

   Install new transmission mount
   Position the new transmission mount onto the crossmember if they are separate components. Install mounting bolts finger-tight. If your mount came pre-assembled to a bracket, proceed to next step.
   Torque spec

   Mounting Bolts31 Nm (23 lb-ft)
9. 9

   Position crossmember and mount assembly
   Raise the crossmember assembly into position, aligning the mount with the transmission mounting pad and the crossmember ends with the frame rail mounting holes. You may need to use the transmission jack to adjust transmission height for proper alignment.
10. 10

    Install mount-to-transmission bolts
    Install the bolts securing the transmission mount to the transmission housing. Start all bolts by hand to ensure proper thread engagement. Torque bolts to specification in a cross pattern.
    Torque spec

    Transmission Mount Bolts65 Nm (48 lb-ft)
11. 11

    Install crossmember-to-frame bolts
    Install all four crossmember-to-frame bolts and start them by hand. Ensure crossmember is seated properly against frame rails. Torque bolts to specification, alternating sides to ensure even seating.
    Torque spec

    Crossmember Bolts95 Nm (70 lb-ft)
12. 12

    Lower transmission and remove jack
    Carefully lower the transmission jack until the transmission weight is fully supported by the new mount. Remove the transmission jack from under the vehicle. Visually verify the mount is compressed evenly and the transmission is sitting at the correct height.

Reassembly

1. Verify all bolts are torqued to specification using a torque wrench
2. Ensure no tools or parts were left under the vehicle
3. Check that no wiring or lines were pinched during installation

Verification

• Start engine and verify no unusual vibration or noise from transmission area
• Shift through all transmission gears (with brake applied) and verify smooth operation
• Visually inspect mount under load to ensure it is compressing properly and transmission is not sagging
• Test drive vehicle and verify no excessive vibration at idle or during acceleration
• Re-inspect all mounting bolts after test drive to ensure none have loosened

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