Minimizer B4578BTPA, Mounting Instructions

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Revised 10/23/2017 Page 2
Figure 3
STEP 3
A. Measure the suspension travel. This measurement is used to determine the distance
between the fender and the wheel.
a. For air suspension systems, let the air out of the air bags.
b. For spring systems, measure from the stops on the springs to the bottom of the
frame.
NOTE:
For air suspensions with travel exceeding 6”:
In some cases a travel stop may need to be installed to prevent such large gaps
between the fenders & tires. This will help with alignment and 5
th
wheel plate clearance.
( Please call Minimizer @ 800-248-3855 for questions regarding this issue).
B.
Gap the fenders ¾” over the maximum travel point of the suspension system. The goal is
to make sure the fender does not rub on the tire. A gap larger than
¾” may be necessary
if using worn tires.
TIP:
Establish the ¾” minimum gap required in Step 3B.
a.
For an air suspension system, place a ¾”
board on top of the tires after the air has
been let out of the airbags (Figure 3).
Place the fender on top of the board.
b.
For a spring suspension system, add ¾”
to the measurement from Step 3A.
STEP 4
A. Position the fenders exactly where they will be mounted.
a. Visually pick and mark the locations that the brackets will bolt
to the frame.
B. Try to use existing holes in the frame to bolt through. It is possible
to remove any existing frame bolt and replace it with the supplied
bolt in the bracket kit.
Tip: It is common for the front bracket to align with the
existing quarter fender holes and the rear bracket to align
with the holes left from the mud flap hanger.
NOTE: Depending on the length of the truck frame and the placement of the mud flap hangers,
the fender may tuck inside the mud flap hanger. Figure 4 shows a truck with flaps and fenders.
Figure 4