Rubicon Express RE7143 - Manual (Page 4)

RE7123B Page 4 of 6
Step 2 – Rear arm and component installation
A. With the vehicle and axle properly supported prepare the rear end suspension component installation by removing the following
items; shocks, sway bar links, and track bar at the frame only (loosen the track bar bolt at the axle). The shocks and sway bar
links will not be reinstalled on the vehicle.
C. Remove the brake line attaching screw at the frame but keep the brake system sealed at this time. Unclip the abs wires from
there attaching points on the axle brackets for additional length. Remove the two nuts holding the E-brake cables to the bottom
of the body.
D. Lower the axle and remove both coil springs. The rubber isolators will come out with the coil and must be reinstalled with the
new coil springs.
Rear track bar bracket and factory track bar (photo 5)
NOTE: With the installation of the rear track bar bracket you may notice that at ride height, the axle is
not completely centered under the chassis; this is intentional. The reason for such offset at ride height
is to allow for proper tire to frame, and/or control arm clearance. Centering the axle under the chassis
at ride height may cause the tire to contact the frame and/or control arm which may result in tire
damage or failure!
A. With the axle properly supported remove the driver’s side rear lower control arm from the frame and axle.
B. Place the new track bar bracket over the factory track bar mounting point on the axle while aligning the two 3/8” holes on
the back side of the lower control arm bracket. Loosely install the two 3/8” bolts, washers, and nuts thru the lower control
arm bracket and track bar bracket.
C. Install the 9/16x3.5” bolt thru the factory track bar location being sure to use the supplied spacer to keep the factory
bracket from collapsing. Tighten the two 3/8” bolts to 35 ft/lbs then tighten the 9/16” bolt to 90 ft/lbs.
D. Using the supplied 9/16x3” install the factory track bar into the new bracket. Install the nut on the back side near the coil
spring but do not tighten at this time.
Rear Arms
A. With the axle already supported and the driver’s rear lower arm already removed install the Rubicon Express Super-Flex
control with the rubber bushing at the frame end and the Super-Flex Joint at the axle. Reuse all factory hardware for
arm installation and make sure the zerk fitting is on top to avoid trail damage. (Photo 6)
B. Set the rear upper control arms to a base line setting of 17 5/8”. This measurement may vary depending on driveshaft
angle and JK model. Install the arm with the Super-Flex joint at the frame and the rubber bushing at the axle. Reuse
all factory bolts and nuts for attaching the upper arms. (Photo 7)
Note: It will be necessary to re-adjust the upper arms during the final check to properly set the pinion angle.
Rear bump pads, coil springs, and sway bar links
A. Install the two bump pads on top of the axle housing using the supplied 3/8” hardware.
B. Using the factory spring isolator place the rear coils up into the upper mount and over the lower mount. Raise the axle into
place just enough to keep the coil spring from falling out.
C. Install the supplied links (RE1157). Install the drivers side link to the outside of the sway bar and lower axle mounting point.
On the passengers side install the link on the outside of the sway bar link and lower axle mount.
Rear brake lines and shocks
A. Remove and replace the rear brake lines with the included stainless steel brake lines. The lines are left and right specific and
when installed the 90 degree leader from the caliper should be leaning away from the tire. (photo 4, front shown)