TERION UM20-100111B, Installation Manual, Page: 18 / 78

4-2
Installation Manual June 15, 2001
Terion, Inc.
4-2
Installation Manual June 15, 2001
Terion, Inc.
Mobile Messaging System
UM20-100111B Mobile Messaging System
UM20-100111B
4.3 Side Mount Instructions
Side mount antenna base mounts are fastened to three different styles of truck bodies. The
differences in styles are fender or body construction materials, and accessibility to the fender
backsides. These body styles are:
•
Composite or fiberglass reinforced plastic bodies
•
Aluminum or steel bodies with inaccessible backsides
•
Aluminum or steel bodies with accessible backsides
4.3.1 Attaching Antenna Base Mount to Composite Body Panels
1. Determine where to fasten the antenna base mount bracket to the side of the truck.
On most side mount installations, the antenna base mount is attached to the panel
between the front door jamb and the motor cowl. Be sure the height of the bracket is
as close as possible to, but no more than, 75", measured from the ground. (See the
diagram on the following page).
Note: The antenna performance improves as its height above the
ground increases.
2. Using the antenna base mount bracket, mark the mounting holes on the truck.
3. If you cannot easily reach behind the body panel to which the antenna base mount is
being attached, loosen it or completely remove it so that you have access to the
backside of the fender.
4. Drill two 1/4" bolt holes in the fender.
5. Attach the quad-radial technology (QRT) assembly to the antenna base mount nut
plate. The nut plate has a 1/4" - 20 stud to fasten the QRT assembly. Fasten the QRT
to the nut plate by first putting a 1/4" inside diameter (ID) star washer on the stud,
followed by the QRT ring terminal and another star washer, and then securing it with
a self-locking nut.
Base Mount
Nut Plate Base Mount
Nut Plate
6. Put a 1/4" ID star washer, and then a 1/4" ID flat washer, on each of the 1/4" - 20 x
3/4" bolts. Place the bolts through the antenna base mount, then through the bolt
holes in the fender. Hold the nut-plate behind the fender so that the 1/4" bolts can be
attached. Thread the bolts into the nut-plate but Do Not tighten them until you have
attached the upper support bracket and
aligned the antenna base mount with
the upper support bracket.
Self-locking Nut Self-locking Nut
Star Washer Star Washer
QRT Assembly QRT Assembly