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JKSBSE251JKS Hydraulic Bump Shocks Installation

Page 1

INSTALLATION

INSTRUCTIONS

Product: Hydraulic Bump Shocks

Part Number: JKSBSE251

Applications: Wrangler JK, 2007+ (rear only)

Welcome

CONGRATULATIONS on purchasing a set of new Hydrau-

lic BumpShocks from JKS Manufacturing! We are commit-

ted to providing you with the best products available and

your satisfaction is our rst priority.

PLEASE READ these Installation Instructions carefully,

and save them for future reference, as they contain impor-

tant installation and maintenance information.

Important

INSTALLATION of this product is not reversible and

should only be performed by an experienced mechan-

ic or fabricator.

CHASSIS MODIFICATIONS are required to install this

product. Do not attempt installation if you are inexpe-

rienced or uncomfortable with cutting and welding on

your vehicle’s frame.

THESE INSTRUCTIONS provide an overview of the in-

stallation process only, and are in no way a substitute

for the experience one needs to do the job properly.

DO NOT EXCEED maximum range of bump shock ad-

justment – see illustration on page 4.

Tools Required

 Hydraulic Floor Jack and Jack Stands

 Metric/Standard Socket Wrench Set

 Spanner or Strap Wrench *

(or similar tool for tightening Bump Shock Nut)

 Metal Cutting Tool (for cutting through frame)

 Grinding/Sanding Tool

(for light material removal and smoothing)

 Emory Cloth

(or similar abrasive for paint/plating removal)

 Tape Measure

 Felt Tip Marker (or similar marking tool)

 Clamping Tool *

(for holding product in place during welding)

 Welding Equipment

 Drill with 1/8” and 3/8” Bits

 Coil Spring Compressor *

 Spray Lubricant (WD-40 or equivalent)

 Anti-Seize Lubricant

 Satin Black Spray Paint

 Factory Service Manual (recommended)

* Asterisk denotes tools that are not required for some applica-

tions. Thoroughly read instructions rst to determine which tools

will be required for your application.

517-278-1226 • tech@jksmfg.com • www.jksmfg.com

491 W. Gareld Avenue, Coldwater, MI 49036

Summary of content (6 pages)

PAGE 1
Product: Hydraulic Bump Shocks Part Number: JKSBSE251 INSTALLATION INSTRUCTIONS Applications: Wrangler JK, 2007+ (rear only) 517-278-1226 • tech@jksmfg.com • www.jksmfg.com 491 W. Garfield Avenue, Coldwater, MI 49036 Welcome Tools Required CONGRATULATIONS on purchasing a set of new Hydraulic BumpShocks from JKS Manufacturing! We are committed to providing you with the best products available and your satisfaction is our first priority.
PAGE 2
Parts Remove the factory upper bump stop holders from the chassis brackets. HINT: The bump stop holder is welded to the chassis bracket and must be cut free. A B C D Description Bump Shock Assembly Bump Shock Nut Jounce Adapter Bump Shock Chassis Tube Part # RFC/BS02 RFC/SN50 03154 03155 QTY 2 2 2 2 With the bump stop holders and brackets removed, clean the chassis of any remaining weld material until smooth. 2. Installation 1.
PAGE 3
Using the reference hole illustrated above as the center point, mark a 2.5” diameter circle on the bottom of the chassis rail. This indicates the material to remove in order to accommodate the supplied Chassis Tubes (D). Transfer the markings from the bottom of the chassis onto the outer side of the frame rail. 3. INSTALL JOUNCE ADAPTER ON CHASSIS TUBE Locate the supplied Jounce Adapters (C). The adapters are zinc plated from the factory to prevent corrosion.
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Next, weld a 1/2” long bead over each tack weld to ensure the Jounce Adapter (C) remains secured to the Chassis Tube (D). HINT: As long as you achieve proper weld penetration on the adapter and spring retainer, it is not necessary to weld around the entire perimeter. Allow the welded sections to cool and then drill a 3/8” hole through the Chassis Tube (D) immediately above one of the welds. HINT: The purpose of the hole is to facilitate the evacuation of any moisture that may collect inside the tube.
PAGE 5
IMPORTANT: Internal threads of Jounce Adapter must remain fully engaged with Bump Shock Assembly at all times. Never operate vehicle when more than 3.25” of bump shock threads are exposed as illustrated above. Once the Bump Shock Assembly (A) is properly adjusted for your application, lock in place by turning the Bump Shock Nut (B) clockwise until it contacts the Jounce Adapter (C) and tighten. HINT: A spanner or strap wrench is useful for tightening Jounce Adapter Nut.
PAGE 6
Operation Bump Shock Adjustments Never attempt to adjust the Bump Shock Assembly (A) while under tension and always apply spray lubricant to threads before adjusting for ease of operation. Bump Shock Pressure The Bump Shock Assembly (A) is pre-charged with the proper amount of Nitrogen gas to suit most applications. Therefore it should not be necessary to adjust bump shock pressure prior to installation. The Nitrogen charge is factory preset at 150 psi.