Engine Mount - Torque Axis

Replace the torque axis (upper front) engine mount on a 1972 Ford F-100 with 302ci V8 to eliminate engine movement and vibration.

Warnings

Tools required

Parts

• Torque axis engine mount (upper front) × 1 — Use OEM specification

Preparation

1. Park vehicle on level surface and engage parking brake
2. Chock rear wheels securely
3. Allow engine to cool completely if recently operated
4. Disconnect negative battery cable to prevent accidental starter engagement
5. Raise front of vehicle and support on jack stands at frame rails
6. Spray all mount fasteners with penetrating oil and allow to soak for 15-20 minutes

Procedure

1. 1

   Position support jack under engine
   Place a floor jack with a wood block (minimum 4"x4"x6") on the saddle directly under the oil pan, positioned slightly forward of center. The wood block distributes load and prevents damage to the oil pan. Raise jack until it just makes contact with the pan but does not lift the engine.
2. 2

   Locate torque axis mount
   The front engine mount is located at the front of the engine on each side, attached to the engine block on one side and the crossmember or frame bracket on the other. On the 1972 F-100 with 302ci V8, the front mounts are positioned on both the driver and passenger sides of the engine block. Verified detail (The 1972 F-100 uses a conventional dual side engine mount setup (one mount on each side of the block bolting to the frame), not a single 'torque axis' mount. 'Torque axis' mount terminology applies to modern transverse FWD engines, not a 1972 body-on-frame RWD truck. There are two side mounts, not one front mount.): The 1972 F-100 with 302ci V8 uses conventional engine mounts located on each side of the engine block, bolting to a bracket on the block and to a frame perch/bracket. This procedure covers replacement of one side mount; identify whether the driver-side or passenger-side mount is being replaced before proceeding.
3. 3

   Remove upper mount fasteners
   Remove the 2 bolts securing the mount bracket to the engine block. These are typically 9/16" head bolts. Use a socket and extension to access them from above. Support the mount with one hand as you remove the final bolt to prevent it from falling.
4. 4

   Raise engine slightly
   Using the floor jack positioned under the oil pan, carefully raise the engine approximately 1/2" to 3/4". This relieves tension on the mount and creates clearance for removal. Monitor radiator hoses, fan clearance, and accessory belt alignment while raising. Do not exceed 1" of lift.
5. 5

   Remove lower mount fasteners
   Remove the 2 nuts or bolts securing the mount to the crossmember or frame bracket. These are typically 1/2" or 9/16" fasteners accessed from below. A combination of wrench and socket may be required to hold the bolt while removing the nut.
6. 6

   Extract old mount
   Remove the torque axis mount assembly from between the engine block and frame bracket. It may require slight manipulation or use of a pry bar to free it from the mounting surfaces if corrosion is present. Inspect the mounting surfaces on both engine block and frame for damage or excessive wear.
7. 7

   Clean mounting surfaces
   Wire brush both the engine block mounting surface and the frame bracket mounting surface to remove rust, corrosion, and old thread-locking compound. Clean threads on all retained fasteners with a wire brush. Inspect threads for damage.
8. 8

   Install new mount to frame bracket
   Position the new torque axis mount onto the frame bracket or crossmember. Install the lower fasteners hand-tight. Do not fully tighten at this stage to allow for alignment adjustment.
9. 9

   Lower engine onto mount
   Carefully lower the engine using the floor jack until the engine block mounting holes align with the upper mount bracket holes. You may need to raise or lower slightly, or shift the mount position on the frame bracket to achieve proper alignment.
10. 10

    Install upper mount fasteners
    Install the 2 bolts securing the mount bracket to the engine block. Thread them in by hand first to ensure proper thread engagement, then tighten snug but not to final torque.
11. 11

    Torque all mount fasteners
    63.0 lb-ft (85.0 Nm) Follow a cross-pattern if applicable to ensure even loading. Verified detail (Factory torque specification for torque axis mount upper engine block bolts on 1972 Ford F-100 302ci V8): 48.0 lb-ft (65.0 Nm)
12. 12

    Remove support jack
    Carefully lower and remove the floor jack from under the oil pan. The engine should now be fully supported by all mounts.

Reassembly

1. Reconnect negative battery cable
2. Lower vehicle from jack stands
3. Remove wheel chocks

Verification

• Start engine and observe for excessive movement or vibration at idle
• Rev engine to 2000 RPM and verify mount limits engine rocking motion
• Shift transmission through all gears (with brake applied) and verify no excessive clunking or movement
• Visually inspect mount for proper seating and clearance from surrounding components
• Check that all fasteners remain tight after test run

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