7.5k Lift Kit Installation Procedures

To aid in installation, it is best to air up the hitch, and put a block in the rear air bag area to keep the hitch raised.

With the hitch "blocked", release all of the air from the hitch. On older hitches, we need to remove the head assembly to do some drilling. This is done by removing the 1" by 10" bolt where the head assembly pivots. This is also a good time to inspect the bolt for excessive wear. On hitches from May 2004 forward, the holes are predrilled.

Now remove the shock absorber (if applicable) from inside the cavity of the hitch. With this kit installed, the shock absorber is no longer needed and may be discarded. The supply air line usually comes in from the bottom. Wherever it is, disconnect the air line from the tee. Look at the attached drawing for the position of the (2) 7/16" holes that will need to be drilled in the swing arm. In the photo, you can see the holes just down from the shock mount.

Now insert the 7.5k assembly in the cavity and install the (2) 3/8" bolts in the new air spring. Line up the 1" hole in the kit with the ½" hole in the base plate. Using the bracket as a template, drill "L" or 19/64" holes through the bed through the pre-drilled holes. Next install the (2) 5/16" self tapping screws to secure the bracket. There will be a DVI control already installed at the air line fitting on the new air spring, do nothing with this. Cut one of the pre-existing air lines and splice in the new air bag with the supplied tee. It is now time to set the head assembly in place. Next, apply about 20 pounds of air to the hitch and check for leaks with a soap solution. Remove the block that you used at the rear of the hitch. You are now ready for normal use.

   

If you have any questions, feel free to call Steve at 270-779-9182 or Dave at 270-756-0282