JKS 2700 - Manual (Page 2)

JKS AC OS Pro™ Installation PN 2700 Page 2 of 8
Front Installation
Important
MOST VEHICLES REQUIRE additional parts
or modifications to accommodate the
immediate increase in ride height provided by
the ACOS Pro™ system.
DO NOT EXCEED maximum range of
adjustment
– see illustration on page 3.
INSTALLATION of this product is not
reversible and should only be performed by an
experienced mechanic or fabricator.
Tools Required
 Hydraulic Floor Jack and Jack Stands
 Metric/Standard Socket Wrench Set
 Torque Wrench
 1/4” & 5/16” Allen Wrenches
 Die Grinder with Cut-Off Wheel
(or reciprocating saw)
 Grinding Wheel *
 Tape Measure
 1/4” and 3/8” Drill Bits
 Transfer Punch (or equivalent)
 Spray Lubricant (WD-40 or similar)
 Anti-Seize Lubricant
 Medium Strength Threadlocker
 Coil Spring Compressor *
 Satin Black Spray Paint
 Factory Service Manual (recommended)
* Asterisk denotes tools that are not required for some
applications. Thoroughly read instructions first to
determine which tools will be required for your
application.
Installation

1. REMOVE FRONT COIL SPRINGS
 Remove the front coil springs per the factory
service manual instructions for your vehicle.
HINT: A coil spring compressor is useful for
removal.
 Depending on the application, it may be
necessary to completely or partially remove any
of the following components before spring can
be free from upper mount.
 Shock Absorber
 Swaybar
 Brake Line
 ABS Wire
 Lower Suspension Arm
 Track Bar
 Steering Drag Link
 Lower Spring Retainer Clip

2. PREPARE UPPER SPRING MOUNT
 Remove the rubber bump stop, bump stop
holder and OE spacer (if equipped) from the
upper spring retainer.
HINT: On most vehicles the bump stop holder is
secured to the upper spring retainer with a single
bolt. However, on some Cherokee XJ and
Comanche MJ models the bump stop holder is
welded to the spring retainer. In this case, you will
need to cut or grind away the flared portion of the
bump stop holder before proceeding to Step 2.
 Remove the factory rubber isolator pad from the
upper coil spring retainer.

3. DRILL UPPER SPRING MOUNT
 Remove the Bump Shock Assembly (J), Bump
Shock Nut (I), Bump Shock Adapter (H),
Isolator Pad (G) and Adjuster Ring (E) from the
Main Body (B) of the ACOS Pro
 .
 Slide the Main Body (B) over the spring retainer
until the flange rests flush against the upper
spring mount. Hint: The Main Body must be
perfectly centered over the spring retainer.
 Using the flange of the Main Body (B) as a
template, accurately mark all six hole locations
on the upper spring mount using a transfer
punch or equivalent. Remove Main Body from
spring mount.
 Using a 1/4” bit, drill a pilot hole at each hole
location. Enlarge each hole with a 3/8” drill bit.
 Paint any exposed metal on the upper spring
mount to prevent corrosion.