Front Subframe Mount: Service and Repair

Frame Cushion or Insulator Replacement

Tools Required

J 39580 Engine Support Table






Refer to for information on conditions resulting from improper installation or frame insulators. Removing any one frame insulator requires loosening the adjacent frame insulators in order to permit the frame to separate from the body.


Use caution when replacing the insulators in order to prevent the following conditions from occurring:

* Breaking the plastic fan shroud
* Damaging the frame attachments (steering hoses, brake pipes)


If the frame insulator bolt does not screw in smoothly, run a tap through the cage in the body in order to remove the foreign material. Ensure that the tap does not punch through the underbody. Position the insulator and the metal washer in order to prevent contact with the frame rail. Do not over tighten the insulator nut. Overtightening the nut may strip the cage nut.


Removal Procedure

Important: Perform the procedure exactly as specified, regardless of whether you will replace all of the insulators or only one of the insulators.







1. Raise the vehicle using a frame contact hoist. Refer toLifting and Jacking the Vehicle in General Information.
2. Support the engine frame near the insulator usingJ 39580 or suitable jackstands.




3. Remove the bolt and the retainer (4) from the insulator.
4. Raise the body slightly.
5. Pry the spacer upwards (1).
6. Remove the upper insulator (2).
7. Press out the lower insulator (3).



Installation Procedure





1. Press the lower insulator (3) into the engine frame.
2. Install the upper insulator (2).
3. Lubricate the lower portion of the spacer (1).
4. Press the spacer (1) into the lower insulator (3)
5. Lower the body to the engine frame (5).

Notice: Refer toFastener Notice in Cautions and Notices.

6. Install the retainer (4) and the bolt.

Tighten the insulator bolts to 191 N.m (141 lb ft).

7. Test drive the vehicle in order to ensure there are no performance issues.