JKS 2700 - Manual (Page 6)

JKS AC OS Pro™ Installation PN 2700 Page 6 of 8
 Cut away the center portion of the upper spring
mount as indicated in the picture below.
HINT: A plasma cutter is useful for cutting the
upper spring mount. Plasma cutting experience
and a very steady hand are necessary to
ensure a clean, accurate cut. Use extreme
caution when operating a plasma cutter near
the fuel tank or any fuel lines.
 With the center portion of the upper spring
mount cut away, a second hole must be cut
through the attached spring mount bracket.
Begin by marking a 2-
1/4” diameter hole in the
bracket using the hole in the spring mount as a
guide. HINT: Mark the hole location carefully
–
the hole in the spring mount bracket must be
concentric to the hole cut into the spring mount.
 Insert your cutting tool into the upper spring
mount hole and cut the second 2-
1/4” diameter
hole through the spring mount bracket.
HINT: Once again, a plasma cutter is the best
choice for cutting the spring mount bracket

3. SHORTEN MAIN BODY OF
ACOS PRO

On vehicles with 4.0 - 5.5” rear coil springs, it will be
necessary to shorten the Main Body (B) to provide
sufficient clearance between the Bump Shock
Assembly (J) and axle pad.
Disregard this step on vehicles with 6.0” springs or taller,
as this modification will not be necessary.
 Measuring 1.5” from the threaded end, mark a
line on the Main Body (B).
 Remove the excess threaded portion by cutting
completely through the Main Body (B) at the
location marked in the previous step.
HINT: A band saw is useful for cutting the Main
Body (B), 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 Main Body (B) for damaged
threads and repair as needed.
HINT: A 16TPI thread restoring file or
equivalent is useful for repairing threads.

4. DRILL UPPER SPRING MOUNT
 Temporarily install the Bump Shock Adapter (H)
and Bump Shock Assembly (J) on Main Body
(B) of ACOS Pro
 . Thread Bump Shock
Assembly into Main Body completely.
 Place the Main Body (B) against the upper
spring mount ensuring that the top of the Bump
Shock Assembly (J) passes cleanly through the
large hole created in section 2.
HINT: Main Body (B) must be perfectly centered
over spring mount to prevent obstruction of
Bump Shock Assembly (J) threads.