Installation & mounting, Mounting hardware, Warning – Code 3 21TR & 21TR Plus User Manual
Page 3: Hook-on mounting
3
Installation & Mounting
Mounting Hardware
All mounting hardware is packed in a small box inside the main carton. Four standard kits are available: (1) Hook-On Type, (1) Tow and
Recovery and (2) Permanent Types. These are discussed in detail later. Note: Hook-on mounting for "gutterless" type vehicles will
require a special hook for mounting. Several special application hooks are available. Contact the factory for details.
Utilizing non-factory supplied screws and/or mounting brackets and/or the improper
number of screws may result in loss of warranty coverage on the equipment.
wARNING!
Mounting Bracket
Bottom of Lightbar
1/4-20 Carriage Bolt
5/16" Split Lockwasher
5/16" Trim Nut
(Do Not Overtighten)
Plastic Shim (if needed)
Rubber Foot
1/4" Acorn Nut
5/16" Cap Screw
5/16" Nut
FIGURE 1
Hook-on Mounting
Begin the installation by attaching the rubber feet to the mounting brackets using the black 1/4" carriage bolts and 1/4" nuts provided.
See Figure 1. (Do not install shims at this time). Place the light bar upside down on a table or other work surface, being careful not to
scratch the lenses. Slide the 5/16" carriage bolts into the frame. Secure the mounting brackets finger tight so they support the weight
of the light bar, but can still be positioned. Locate the vehicle on a level surface. Place the light bar on the roof of the vehicle. Place
a soft pad in the center of the roof to protect the paint. The mounting brackets must be placed so that the rubber feet are resting on
the curved section of the roof, see Figure 2. This is the strongest part of the roof. Once the light bar is centered, tighten the mounting
bracket to the light bar. Using a tape measure and a level, center the light bar from side to side and locate a position on the roof where
the light bar is level.
Gutter Hook
5/16-18 Carriage Bolt
!
FIGURE 2
Vehicle Roof
Vehicle Gutter
Curved Feet on
Curved Portion
The shims provided may be used here to help level the light bar, see Figure 1. Also, the tabs on the mounting brackets may be bent at
any angle to match the curvature of the roof. Select the appropriate length cap screw and insert through the holes in the gutter hook
and mounting bracket, and into a lock washer and acorn nut as shown in Figure 1. If a special hook for a "gutterless" vehicle is used,
refer to the instructions for that hook at this time. The stainless steel cap screws supplied are sized for the most common installations,
but longer and shorter bolts are available at any hardware store. Tighten the cap screws on both sides evenly keeping the light bar
centered and level.