JKS 2710 - Manual (Page 2)

JKS ACOS Pro ™ Installation PN 2710 Page 2 of 5
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

2. PREPARE SPRING RETAINER
The factory bump stop holder is welded to the upper
spring retainer and must be permanently removed in
order to install the ACOS Pro
 .
 Pry the rubber bump stop (jounce bumper) free
from the bump stop holder.
 Remove the rubber isolator pad from the upper
coil spring retainer.
 Locate the factory weld that secures the bump
stop holder to the upper coil spring retainer.
 Cut away the bump stop holder immediately
above the weld as illustrated.
HINT: A die grinder with cut-off wheel or
reciprocating saw is useful for cutting away the
bump stop holder.
 Remove any sharp edges from the cut portion
of the upper spring retainer.
HINT: A file or deburring tool is useful for
removing sharp edges.
 Remove all of the factory paint from the surface
of the upper spring retainer.
HINT: Emory cloth or a suitable stripping tool is
useful for paint removal.

3. SHORTEN THREADED TUBE OF
ACOS PRO

On vehicles with 0 - 2.0” front coil springs, it will be
necessary to shorten the Threaded Tube (A) to provide
sufficient clearance between Bump Shock Assembly (G)
and axle pad. This step will also reduce the maximum
adjustment height from 3.5” to 2.5”.
IMPORTANT: Disregard this step on vehicles with
2.5” springs or taller, as this modification will not be
necessary.
 Measuring 1.0” from the threaded end, mark a
line on the Threaded Tube (A).
 Remove the excess portion by cutting
completely through the Threaded Tube (A) at
the location marked in the previous step.
HINT: A band saw is useful for cutting the
Threaded Tube, although a sharp hack saw
with an appropriate fine tooth blade or cutting
wheel may also be used. Use extreme care to
avoid damaging remaining threads.
 Inspect end of Threaded Tube (A) for damaged
threads and repair as needed. HINT: A 16TPI
thread restoring file or equivalent is useful for
repairing threads.