JKS 2400 User Manual
Page 2
JKS Adjustable Spring Mount Installation
PN 2400
Page 2 of 2
3. INSTALL ADJUSTABLE SPRING
MOUNTS ON REAR AXLE
Install optional JKS Spring Retainer PN 1600
(recommended – sold separately) at this time if
purchased.
Place coil spring on Adjustable Spring Mount
and position assembly on axle housing. Make
sure original rubber isolator pad is located
between upper spring mount and top of coil.
IMPORTANT: Adjustable Spring Mount bracket
must be installed with rounded side facing
forward and flat side facing the rear as
illustrated above.
On driver side of vehicle, notch in Adjustable
Spring Mount bracket will line up with track bar
bracket as illustrated below.
Slide Adjustable Spring Mount bracket outboard
on axle tube until it is as close to the factory
bump stop pad as possible. HINT: Stop when
bracket contacts factory weld between bump
stop pad and axle tube.
Using the supplied U-bolts, loosely fasten
Adjustable Spring Mount bracket to axle tube.
Do not tighten U-bolt nuts yet.
Rotate Adjustable Spring Mount bracket to
desired position on axle tube. HINT: When
positioned properly, Adjustable Spring Mounts
will allow full suspension travel without
excessive bowing of coil springs. Check for
interference between coil springs and track bar.
Measure mounting angle of bracket to ensure
both sides are identically adjusted. HINT: Use
an angle measuring tool to accurately record
mounting angle of Adjustable Spring Mount
bracket.
With Adjustable Spring Mount correctly
positioned, evenly tighten the U-bolt mounting
nuts until bracket is secure.
Using a torque wrench, tighten U-bolt nuts to 50
ft-lbs.
Slowly raise the rear axle housing with a
hydraulic jack. Make sure top of coil spring is
properly seated in the upper spring mount.
Connect shock absorbers to axle housing using
original mounting hardware. Tighten shock
mounting bolts to 56 ft-lbs.
Connect the rear stabilizer bar drop links to axle
housing using original mounting hardware.
Tighten hardware to 75 ft-lbs.
4. REINSTALL REAR TRACK BAR
Apply anti-seize lubricant to bolt threads of
original track bar mounting hardware.
Insert axle end of track bar into axle bracket
and loosely install the original mounting
hardware.
Mount chassis end of track bar and loosely
install the original mounting hardware.
IMPORTANT: The vehicle must be on level
ground and the coil springs supporting the
full vehicle weight before the mounting
hardware is tightened.
Using a torque wrench, tighten mounting
hardware at both ends of track bar to 125 ft-lbs.
Maintenance
Check torque specifications regularly.
© 2009 JKS Manufacturing, Inc & Aftermarketing, LLC
Revision Date 8/12/2009