Fleet Engineers INS-02021 User Manual
Each x-flex, Iso-blox, System includes
1. Position the two Iso-blox
®
between the fender and mount-
ing tube. Make sure the fender, Iso-blox
®
and mounting
tube are all in the desired location to spot the mounting
holes.
Installation Sheet Part Number INS-02021 • 2/02 •Rev. A-8/02 • Rev B-10/06 • RevC-12/10 • Rev. D 5/13
Each X-FLEX
®
ISO-BLOX
®
System Includes:
•4 Vibro-Isolators
•4 Mounting Clamp Plates
•8 5/16-18x3/4 S.S. Truss Head
self locking screws
•8 5/16-18x3/4 Hex
Head Bolts
•8 5/16 Lock Washers
OPTIONAL: 1” X-tend-a-pad
ISO-BLOX
®
®
Installation Sheet
#INS-02021
NOTE: These instructions for installation are intended to be a
general guide to help the installer. Because of the large number of
possible mounting configurations, the installer is responsible for
the ultimate installation design. Any modifications to the product
are at the discretion, responsibility and risk of the installer.
Note: The desired position for the X-FLEX
®
mounts
will vary from one installation to another. This is best
determined with the help of the instructions from the
fender manufacturer.
If mounting instructions from the fender manufacturer
are unavailable, the X-FLEX
®
mounts should be located
approximately 5”-6” in from the sides of the fender.
When using X-FLEX
®
ISO-BLOX
®
with an end mount on
a half tandem, locate no more than 18” from the end of
the fender.
The ISO-BLOX
™
is a vibration isolation
system designed for use under the
fender to secure a 1-7/8” tube mount
in flat or center mounted applications.
Assembly Instructions
2. Using a spotting punch or 1/4” maximum diameter drill
bit, spot where the mounting holes will be in the fender by
running the drill bit through the threaded bushings in the Iso-
blox
®
. be careful not to damage the threaded bushings.
Note: Running the drill in reverse is a safe way to do
this!
3. Remove the fender and drill 11/32” to 3/8” diameter holes
using the spot marks for location.
4. Reposition and loosely assemble the fender to the Vibro-
Isolators with the 5/16” x 3/4” self locking stainless steel truss
head screws.
5. On the underside of the fender, loosely assemble the clamping
plates to the Iso-blox
®
with the 5/16” x 3/4” hex head bolts
and lock washers.
6. Install the other fender mounts using the same procedure or,
if using a different style of fender mount, use manufactures
directions.
7. When the ISO-BLOX
®
and any other mounts are installed and
the fender is in the desired location, tighten all screws and
bolts on the Iso-blox
®
to proper torque:
5/16” bolts and screws torque to 156 in. lbs. or 13 ft. lbs.
PATeNT #6,648,373
OPTIONAL: To increase the space be-
tween the fender and tire by 1”, install
the X-FLeX
®
xtend-a-pads between
the Iso-blox
®
and the fender. order
part number 031-01209.