JKS SuperNerf Installation PN OGS825 Page 3 of 3
MOUNT SUPERNERFS TO PINCH WELD
Identify the correct mounting position of the
Chassis Mounting Arms by locating the
corresponding letters stamped on the bottom of
flange.
DF = Driver Front PF = Passenger Front
DR = Driver Rear PR = Passenger Rear
Slip the proper Chassis Mounting Arms into
appropriate Support Legs of SuperNerfs.
Re-position SuperNerfs beneath rocker panels
and horizontally align with mounting holes in
pinch welds. It is unlikely that all mounting holes
will vertically align at this stage as additional
force may be necessary to raise the SuperNerfs
into position.
Place a bottle jack (or similar) beneath the
square tube of SuperNerf and carefully raise
assembly to minimize gap between rocker
panel. Closely monitor vertical alignment of
mounting holes in pinch weld. As holes align,
insert a 5/16” x 1” bolt through 5/16” lock
washer, 5/16” flat washer, and pinch weld
before threading into SuperNerf. DO NOT
tighten until all bolts have been successfully
inserted.
HINT: If any holes in pinch weld do not align with
SuperNerf, enlarge hole with a file until bolts can be
inserted without difficulty. This process is easiest with
SuperNerfs removed.
Once all bolts have been threaded into
SuperNerf, carefully tighten until SuperNerf is
secured to pinch weld. DO NOT over-tighten
bolts. Square tube should fit closely beneath
rocker panel and there should be no gap
between pinch weld.
MOUNT SUPERNERFS TO CHASSIS
Inspect vehicle chassis where Mounting Arm
flanges will attach and remove any
undercoating or debris. Flange must be flat
against the mounting surface and positioned as
high on the chassis as possible.
Fully extend Mounting Arms and rotate until
flanges are square with chassis. If necessary,
position a bottle jack beneath Mounting Arm
and raise the vertical position of flange on
chassis until square tube of SuperNerf is level.
HINT: A right-angle drill is useful for working in close
quarters. If unavailable, it is acceptable to drill holes and
insert bolts at slight angle due to limited space between
drill and support leg.
Using the flange as a guide, drill a 5/16” hole in
vehicle chassis. Insert a 3/8” x 1” self-tapping
bolt into the hole and carefully tighten until bolt
is snug. Repeat this step one at a time until all
bolts have been installed.
IMPORTANT: Use extreme care to avoid stripping
threads when tightening self-tapping bolts in
chassis. Lubricating oil will ease installation. If still
difficult, tap the holes with a 3/8”-16 NC tap.
SECURE CHASSIS MOUNTING ARMS
TO SUPERNERF SUPPORT LEGS
The Chassis Mounting Arms may be bolted or welded to
the SuperNerf support legs to complete the installation.
For best performance and the strongest connection, JKS
highly recommends the welded installation.
HINT: Before welding, remove any protective
powdercoat finish from area so that bare metal is
exposed.
Weld-On Installation
Enlarge pre-drilled holes located on SuperNerf
support legs to at least 1/2" diameter. DO NOT
drill through Chassis Mounting Arms.
Rosette weld support legs to Mounting Arms at
each hole.
Finally, weld the end of SuperNerf support legs
to Mounting Arms.
Bolt-On Installation
Using the pre-drilled holes located on the
support legs of each SuperNerf as a guide, drill
through the Chassis Mounting Arms using a
3/8” drill bit.
Insert supplied 3/8” x 2-1/4” cross bolts and
secure with 3/8” Nylock nuts. Tighten to 40 ft-lb.
using a torque wrench.
If possible, weld the end of SuperNerf support
legs to Mounting Arms for added security.
PROTECT ANY BARE METAL
Carefully inspect and locate any areas where
bare metal has been exposed due to cutting,
grinding, drilling, or welding. Paint unprotected
areas to prevent corrosion.
Maintenance
Surface of SuperNerfs may become scratched or
blemished under normal operating conditions. To
recondition the appearance and protect from corrosion,
satin black spray paint provides a close match to the
original powdercoat finish.
©2008 JKS Manufacturing, Inc & Aftermarketing, LLC
Revision Date 2/1/2008
