Synergy 8023 - Jeep JK Control Arm Kit - Manual (Page 7)

PPM-8054 JK REAR UPPER CONTROL ARMS
Instructions
GENERAL NOTES
• These instructions are also available on our website: www.synergymfg.com. Check the
web-site before you begin for any updated instructions and additional photos for your
reference.
• The installation of these control arms will allow you to correctly align the rear axle and
pinion angle after a suspension lift kit is installed.
• These control arms feature a double adjuster sleeve which allows you to adjust the
length of the arm without removing the arm from the vehicle.
1. The control arms are pre-assembled to the shortest length. Make any length
adjustments by only turning the adjuster sleeve so there is equal thread on the flex joint
and adjuster sleeve. Make sure the grease zerk on the flex joint is aligned with the pinch
bolt on the control arm.
2. We recommend that you preset the length of the upper control arms before installation.
We assume you are also using adjustable lower control arms and are installing these
upper control arms to point the pinion up for the installation of a CV style rear driveline.
We recommend that the lower control arms be set to a length of 20.25” center to center of
the bushings. The length of the uppers will depend on the desired pinion angle; the
following table will give you a good starting point to set the length of the upper control
arms. Pinion angle adjustment should be made with the upper control arms, keep the
lower at 20.25”.
UCA Length When Using 20.25” LCA Length, & 3-4.5” LIFT
Vehicle Type Pinion Angle Upper Control Arm Length
4 DR with CV 10 DEG 18.25”
2 DR with CV 15 DEG 18.75”
3. Remove the existing upper control arms.
4. Install the new control arms with the bushing at the frame end and the flex joint at the
axle end. Position the arm with the pinch bolt and the grease zerks on the bottom of the
control arm. Reuse the factory mounting bolts.
5. Tighten the factory control arm bolts to 125 ft-lbs, once final length adjustments are
made, tighten the pinch bolt to 80 ft-lbs.
6. Grease the flex joints using extreme pressure moly grease.