Maintenance – JKS 7101 User Manual

Page 2

JKS7101

JKS Adjustable Control Arm Installation

2 Page

Remove the rear upper suspension arm nut and

bolt from the axle housing bracket. Retain the

original mounting hardware.

Remove the nut and bolt from the chassis rail

bracket. Retain the original mounting hardware.

Remove original rear upper suspension arm.

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 upper Control Arm can be

increased (up to 3.75” longer), decreased (up to 0.25”

shorter), or exactly the same as the OE suspension arm.

Determine ideal Control Arm length for your ap-

plication by considering factors such as:

Length of OE suspension arm

Tire Clearance

Pinion 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 with the

greaseable fitting facing UP.

Install the original mounting bolt and finger tighten

the nut.

DO NOT torque mounting hardware

until instructed.

Mount the rotating (GOLD) end of Adjustable Con-

trol Arm to the axle housing bracket.

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 mount-

ing bracket, either (1) adjust height of axle hous-

ing 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.

Attach the parking brake cable and ABS wiring (if

equipped) to the upper Control Arm with plastic

wire ties or equivalent.

4. TIGHTEN MOUNTING HARDWARE

Once all 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 the mounting hard-

ware to the factory torque specifications for your

vehicle.

Wrangler TJ, 1997-06

Tighten bolt at REAR axle and chassis brack-

ets to 55 ft-lbs.

Grand Cherokee ZJ, 1993-98

Tighten bolt at REAR axle and chassis brack-

ets to 55 ft-lbs.

5. POST-INSTALLATION INSTRUCTIONS

Adjustable Control Arms are supplied pre-lubri-

cated, 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.

If installing front Adjustable Control Arms at same

time, have vehicle professionally aligned before

driving on highway.

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.

Revision Date 10/30/2013