JKS PN 6155 User manual

JKS Adjustable Control Arm Installation PN 6155 Page 1 of 2
Installation
Instructions
Product: Adjustable Lower Control Arms
Part Number: PN 6155
Application: Jeep Wrangler JK, 2007+ (rear only)
Welcome
CONGRATULATIONS on purchasing a set
of new Adjustable Control Arms from JKS
Manufacturing. We are committed to providing
you with the best products available and your
satisfaction is our first priority.
PLEASE READ these Installation Instructions
carefully, and save them for future reference,
as they contain important installation and
maintenance information.
Important
SUSPENSION COMPONENTS THAT HAVE
RUBBER BUSHINGS must be tightened with
vehicle on level ground and at normal ride
height. The springs must be supporting weight
of vehicle when the hardware is torqued.
RUBBER BUSHINGS MUST NEVER BE
LUBRICATED, as doing so will impair
performance and longevity.
COMPATIBLE WITH original 4-link
suspension configuration and vehicle ride
height up to 6.0”.
REFER TO FACTORY SERVICE MANUAL
for information and procedures not covered in
these instructions.
Tools Required
Hydraulic Floor Jack and Jack Stands
Metric/Standard Socket Wrench Set
Torque Wrench
Tape Measure
Anti-Seize Lubricant
Hand-Pump Grease Gun
Moisture Resistant Marine Style Grease
Heavy Duty Ratchet Strap *
Factory Service Manual (recommended)
* Asterisk denotes tools that are not required for some
applications. Thoroughly read instructions to determine
which tools will be required for your application.
ATTENTION INSTALLER
Install Adjustable Control Arms ONE AT A TIME
for easiest alignment of mounting hardware.
Installation
1. REMOVE ORIGINAL LOWER
SUSPENSION ARM
Raise and support the vehicle chassis with jack
stands positioned in front of the rear lower
suspension arm brackets.
Raise the axle housing back into position and
support with a hydraulic jack. HINT: The axle
housing should be evenly supported and the
suspension at normal ride height. Do not
attempt removal or installation with the
suspension extended, or the axle drooped, as
this will place tension on suspension arm
mounting hardware.
Remove the lower suspension arm bolt and nut
from the axle housing bracket. Retain the
original mounting hardware.
Remove the bolt and flag nut from the chassis
rail bracket. Retain the original mounting
hardware.
Remove the original lower suspension arm from
the vehicle.

JKS Adjustable Control Arm Installation PN 6155 Page 2 of 2
2. SET CONTROL ARM LENGTH
Adjustable Control Arms are fully collapsed when
supplied from JKS and must be adjusted to the desired
lengths before installation.
The working length of each lower Control Arm can be
increased (up to 2.625” longer), decreased (up to 0.75”
shorter), or exactly the same as the OE suspension arm.
Determine ideal Control Arm length for your
application by considering factors such as:
ÂLength of OE suspension arm
ÂTire Clearance
ÂPinion Angle
Rotate adjustable end of Control Arm until the
desired length is achieved.
Adjust corresponding Control Arm to exact
same length.
3. INSTALL CONTROL ARM
Apply anti-seize lubricant to bolt threads of
original mounting hardware.
Mount the non-rotating (BLACK) end of
Adjustable Control Arm to the chassis rail
bracket.
Install the original mounting bolt and flag nut.
Finger tighten the bolt. DO NOT torque
mounting hardware until instructed.
Mount the rotating (GOLD) end of Adjustable
Control Arm to the axle housing bracket with the
greaseable fitting facing up.
Install the original mounting bolt and finger
tighten the nut. DO NOT torque mounting
hardware until instructed.
HINT: If mounting bolt is difficult to install due to
misalignment of Control Arm bushing with
mounting bracket, either (1) adjust height of
axle housing with hydraulic jack, (2) move axle
housing into position with a heavy-duty ratchet
strap, or (3) temporarily disconnect track bar
until mounting holes align.
4. TIGHTEN MOUNTING HARDWARE
Once both Adjustable Control Arms have been
properly installed, lower the vehicle to the
ground until coil springs are supporting the full
weight of vehicle.
Using a torque wrench, tighten all mounting
hardware to 125 ft-lbs.
5. POST-INSTALLATION
INSTRUCTIONS
Adjustable Control Arms are supplied pre-
lubricated, although it will be necessary to add
more grease after they have been adjusted and
installed on the vehicle. Refer to Maintenance
section for specific lubrication instructions.
Maintenance
Control Arms should be greased regularly as part of
vehicle maintenance schedule. Lubricate using moisture
resistant marine style grease and a hand-pump grease
gun. DO NOT use a pneumatic grease gun. Add grease
slowly until resistance is felt. The internal spring-loaded
seal can be damaged by forcing too much grease into
Control Arms.
©2009 JKS Manufacturing, Inc & Aftermarketing, LLC
Revision Date 2/4/2010