Remove the passenger's side upper control arm bolt at the axle. Place one of the provided offset cam washers between the two tabs located on the axle mount on each side of the original control arm hole. Position the washer so that the hole is closer toward the front of the vehicle and even (up and down) with the existing hole. Mark the perimeter of the hole using the washer as a guide. Remove the washer. Notice that the hole marking is located in a factory perforated section of the mount. Using a rotary grinding tool, remove the perforated section of the mount where the mark was made. Repeat this on the other side of the mount.
What does this mean???
__________________ It's got a Willy's body, a Chevy engine, Ford axles, GM transmission, and Dodge steering components... it must be a Wrangler.
It means that where your front lower control arm's has a rough section under the big washer and you will need to smooth it out. This is for your front lower control arms and where they mount to the axle.
Some jeeps have the washers there and I believe some years do not.
I am starting my zone 4" lift tomorow. I have read this part a few times to my understanding we are supposed to put an offset washer on the control arm mark out the hole and use a die grinder to offset the hole. Most likely to adjust the pinion angle to reduse vibration. I let you now tommorow if it works.
It is strictly for alignment/camber purposes. Mainly so that the lift doesn't put too much of a bind on your control arms that your alignment cannot be adjusted. It can be offset by using the concentric bolt set or adjustable control arms. I would not worry too much about this if I were you.
Respect is earned and Honor is given
2005 LJ 6-speed with 3" Zone & 33" BFG A/T's
I just finished my 4" zone lift today took 5-1/2 hours. I marked out the hole cut the mark out and put the washer in and worked great. by doing this it just rotated the dif up and align the drive shaft a little better if you have adjustable upper you should not need to do this. I drove it about 60 miles today no vibes rides great. I did not do the transfer case drop either. very happy with this lift.