Poison Spyder CJ ROCKBRAWLER REAR BUMPER WITH TIRE CARRIER - Manual (Page 5)

INSTALLATION INSTRUC
TIO
NS
©2011 POISON SPYDER CUSTOMS, INC. • 951-849-5911 • WWW.POISONSPYDER.COM
Poison Spyder Customs • TJ-YJ-CJ ROCKBRAWLER REAR BUMPER Page 5
27. Measure the overall height of your spare
tire (NOT one of the mounted tires on your
Jeep!), divide that measurement in half, then
add one inch. The resulting number will be
your tire mount height measurement. With
the Tire Carrier closed and latched, measure
upward from the recessed step surface of the
bumper, and make a small mark on the tire
carrier at the tire mount height measurement.
28. Use (4) 7/16-14 x 1 Gr8 Hex Head Cap
Screws with (4) 7/16 Flat Washers and (4)
7/16-14 Nylon Insert Lock Nuts to attach
the Tire Mount - Carrier Side to the Tire
Carrier, centered on the mark you made in
the previous step. The slots in the tire carrier
allow for some adjustment, however if there
isn’t enough adjustment to center the Tire
Mount exactly centered on your mark, move
it up slightly to the next set of slotted holes
in the carrier. Tighten the four bolts/nuts to
approximately 50 ft.-lbs.
29. Look at the Tire Mount - Tire Side, and
note that there are wheel stud holes for
several different bolt patterns. Use the Bolt
Pattern Template provided at the end of these
instructions to determine which THREE holes
to use for your specific bolt pattern. Once
the three holes are correctly identified, mark
them with a felt-tip marker.
30. Use a shop press or hammer to drive the
three provided Wheel Studs into the mounting
plate, using the holes that were marked in the
previous step. Make sure the studs point
in the opposite direction from the V-channel
piece that is welded to the back of the plate.
31. Lay your spare tire on the floor with the
mounting surface of the wheel pointed up.
Lay a long straight edge (yardstick, level, or
other suitable item) across the middle of the
tire. Measure the vertical distance from the
straight edge to the wheel mounting surface.
This is the Overall Offset measurement,
including any bulge in the tire sidewall.
32. Fit the Tire Mount - Tire Side channel on to
the corresponding beam of the Tire Mount -
Carrier Side. Use (3) 7/16-14 X 3 Gr8 Hex
Head Cap Screws with (6) 7/16 Flat Washers
and (3) 7/16-14 Nylon Insert Lock Nuts to
secure the Tire Mount-Tire Side to the Tire
Mount - Carrier Side, using the slotted holes
provided. Adjust the position of the mounting
surface of the distance between the Tire
Mount and the surface of the tire carrier frame
is 1/4 to 1/2 inch LESS THAN the Overall
Offset measurement found in the previous
step. Once properly adjusted, tighten the
three bolts/nuts to approximately 50 ft.-lbs.
NOTE: Some tire/wheel combinations, such
as 12.50 wide tires on stock Jeep wheels,
may require more Overall Offset than the
adjustment in the Tire Mount components allows
(approximately 4-3/4” to 6-3/4”). In these cases,
source a wheel spacer of suitable thickness to
make up the difference.
33. With the help of a friend, lift the spare tire
onto the Tire Mount - Tire Side, and fit the
previously installed lug studs through the
holes in the wheel. Tighten the (3) Lug
Nuts. This will draw the sides of the tire
tightly against the frame of the Tire Carrier, to
prevent rattles and squeaks.
34. Test-close the tire carrier. Note that the
Tire Carrier is built with “pre-load”, and it
needs the weight of the spare tire to be on it
for optimal alignment of the latch mechanism.
Even with the weight of the spare tire now on
the carrier, It is to be expected that the latch
mechanism and the latch pin/receiver may not
align perfectly on the first try. You may need
to loosen the attachment hardware of the
various components of the latch assembly to
align the correctly, then re-tighten. It may also
be necessary to make sure the hinge bearings
are fully seated in order to attain proper
alignment. Once all adjustments are made,
re-tighten the latch mechanism components
and re-check for proper operation of the latch
mechanism.
35. Use (4) 1/4-20 X 3/4 SS Button Head Cap
Screws, (4) 1/4 Flat Washers and (4) 1/4-20
Nylon Insert Lock Nuts to fasten your license
plate to the License Plate Mount.
36. Use the 1/4-20 X 3 Gr5 Hex Head Cap Screw
with 1/4 Flat Washer and 1/4-20 Wing Nut to
fasten the License Plate Mount to the Tire
Mount at the center of the spare tire. Tighten
the nut enough to eliminate “play” in the
bracket.