Maintenance – JKS 6155 User Manual

Page 2

JKS6155

JKS Adjustable Control Arm Installation

2 Page

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.

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 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.

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 misalign-

ment 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 mount-

ing 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 hard-

ware to 125 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.

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 10/11/2013