Installation instruc tio ns – Poison Spyder JK ROCKBRAWLER II REAR BUMPER WITH TIRE CARRIER User Manual

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INSTALLATION INSTRUC

TIO

Poison Spyder Customs • JK ROCKBRAWLER II REAR BUMPER

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BEFORE YOU BEGIN
The Poison Spyder Customs RockBrawler™ II

Rear Bumper comes as unpainted, bare steel.

You will want to either powder coat or paint the

bumper prior to final installation. If painting

yourself, careful preparation will make a big

difference in the quality and longevity of your

paint job, even using “rattle can” aerosol paints.

Begin by thoroughly cleaning the bumper with

solvent or de-greaser, then make sure all residue

is removed. Even if you use cheap paint, try to

use a good quality primer. “Etching” primers are

best to use on bare, unpainted metal. Allow it to

properly dry before painting, and between paint

coats.

INSTALLATION PROCEDURE
1. Park the Jeep on a flat, level surface and

set the parking brake.

2. Remove existing rear bumper and

disconnect the rear sway bar where it bolts

to the outside of the frame rails. Keep the

OE hardware that attached the bumper to

the frame rails, as some of it will be re-used.

3. With the help of a friend, pre-install the

RockBrawler™ II rear bumper on to the

Jeep. The bolt flange of the RockBrawler™

II bumper will mount between the outside

of the frame rail and the sway bar bracket.

Note that there are three bolt holes in the

bolt flange on each side of the bumper. Two

of these bolt holes will align with the stock

bolt holes in the frame rail, where the sway

bar bracket attaches. Use the OE hardware

to secure the bumper in place using these

two bolt locations on either side. On the

driver side with the Floating Mount Plate,

tighten the hardware attaching the plate to

the bumper, after ensuring that the bumper

is properly centered and aligned.

4. Use a felt-tip pen or 3/8 center punch to

mark the location of the third bolt hole on the

frame rail, for each side.

5. Look underneath the bumper, note that

there are 4 bolt holes along the bottom

surface of the bumper. The driver’s side,

outside hole will need to be marked to drill a

corresponding hole in the crossmember that

sits just behind it. Use a center-punch or

fine-tip felt marker to mark the hole location.

You may notice that the outside passenger

side already has a through-hole through the

crossmember. Disregard the two center

holes.

FIGURE 3

6. Remove the bumper from the Jeep.
7. Drill upward through the crossmember,

at the hole location marked in the previous

step. Start with a smaller drill size such as

1/4”, then step up to the 1/2” bit for the final

hole size. Drill through both the bottom and

top surfaces of the bumper, trying to hold the

drill perpendicular so the holes are vertically

aligned.

8. Drill the third bolt hole on the sides of each

frame rail to 1/2”. It is best to start with a

smaller drill size such as 1/4”, then step up to

the 1/2” size bit.

FIGURE 3

9. Apply touch-up paint to the bare metal

around the edge of the holes that were drilled

in the previous steps. Properly coating these

areas at this time will help to prevent rust in

the future.

10. Insert a 3/8-16 Clip Nut through the oblong-

shaped hole in the frame rail, and clip it into

the new hole just drilled. Make sure the

extruded thread barrel of the clip nut points

inward. Do this on both frame rails.