Wilwood Dynapro SA Lug Drive Dynamic Rear Drag Brake Kit - Manual (Page 4)

Disassembly (Continued) and Assembly Instructions
Remove any nicks or burrs on the housing flange and axle
flange that may interfere with the installation of the new brake
components.
Remove the stock bearing retainers from the axles.
•Clean and de-grease the housing flange, axle flange, and saved
components.
Assembly Instructions (numbers in parenthesis refer to the parts
list and Figure 1 on the preceding pages): CAUTION: All mounting
bolts must fully engage clinch nuts. Be sure to check that all bolts
are either flush or protruding through flanged side of clinch nut after
shimming, Figure 5.
•Reinstall the axle into the axle housing.
•Install the caliper mounting bracket (1), with the slot for the axle
pointing upward, to the housing flange using the OEM bolts and
nuts, as shown in Figure 1 and Photo 1. Ensure that the heads
of the clinch nuts are facing outboard, Photo 1. Apply red Loctite
®
271 to the OEM bolt threads and torque to OEM specifications.
•Insert the dynamic mount wear plates (4) into the slots in the hat
(2) making sure the tabs snap in place, Photo 2. Orient the rotor
(3) as shown in Figure 1 and Photo 3, with the flush mount tab
side facing the hat. Attach the rotor to the hat using snap ring (5)
by pushing down on the rotor and installing the ring into the
groove in the hat, as shown in Photo 4. Ensure that the ring is
fully engaged in the groove.
•Align the correct hole pattern in the hat (2) with the axle stud
pattern and slide the hat/rotor assembly onto the axle hub.
NOTE: The hat must fit flush against the axle flange or excessive
rotor run out may result. Install three lug nuts (finger tight) to
keep the hat/rotor in place while continuing with the installation.
NOTE: Some OEM and aftermarket axles come with stud sizes
larger than 0.50” diameter. Verify stud size, and if necessary,
have a qualified machine shop drill the hats to the correct size.
•NOTE: Please reference the caution statement at the beginning
of the assembly instructions. Mount one caliper (6) onto the
mounting bracket (1) using bolts (8) and washers (7), as shown
in Figure 1. Initially place two .035” thick shims (9) on each bolt
between the caliper and the bracket, Photo 5. Temporarily
tighten the mounting bolts and view the rotor (3) through the top
opening of caliper. The rotor should be centered in the caliper,
Photo 6. If not, adjust the caliper by adding or subtracting shims
between the bracket and the caliper. Always use the same
amount of shims on each of the two mounting bolts. NOTE: The
end of each bolt must be flush with or slightly protruding from the
head of the clinch nut. If necessary, place spare shims between
washer and caliper mounting ear to achieve the proper clinch nut
engagement, as shown in Figure 5. Once the caliper alignment
and clinch nut engagement are correct, remove the bolts one at
a time, apply red Loctite® 271 to the threads, and torque to
Page 4
Photo 1
(Generic Bracket Shown)
Photo 2
Photo 3 Photo 4
Photo 5 Photo 6
BEGIN BY SLIDING THE 0.032"
DIAMETER WIRE THROUGH TWO OF
THE HOLES (LEFT) THAT ARE 180°
APART. TWIST THE WIRE AS
SHOWN (BELOW) USING SAFETY
WIRE PLIERS. NOW SLIDE ONE
WIRE THROUGH TWO OF THE
HOLES (180° APART) AND WRAP THE
OTHER WIRE AROUND THE BOLT.
TWIST THE WIRES TOGETHER TO
FORM A PIGTAIL. SEE DS-386 FOR
COMPLETE DETAILS.
Figure 4. Safety Wire Diagram Photo 7