Wilwood W6A WCCB Carbon-Ceramic Big Brake Front Brake Kit - Manual (Page 4)

Assembly Instructions (numbers in parenthesis refer to the parts list and Figure 1 on the preceding pages):
• The caliper mount bracket (1) should initially be installed with
clean, dry threads on the mounting bolts. Orient the bracket, as
shown in Figure 1 and Photo 1, and install using bolt (2) and
washer (3). Initially place two .033” thick shims (4) on each bolt
between the bracket and upright, Figure 1. Temporarily tighten
the mounting bolts. NOTE: The bracket must fit squarely against
the mount bosses on the upright. Inspect for interference from
casting irregularities, machining ridges, burrs, etc. Later, after
the caliper alignment has been checked, the mount bolts will be
secured using red Loctite
® 271.
•The hat/rotor assembly (6) has been pre-assembled at the
factory using red Loctite ® 271 on the mounting bolts and torqued
to specification. For an added measure of security, the bolts may
be safety wired using standard 0.032 inch diameter stainless
steel safety wire as shown in Figure 4. Please refer to
Wilwood’s
data sheet DS-386 (available at
www.wilwood.com/Pdf/DataSheets/ds386.pdf ) for complete
safety wire installation instructions.
• Slide the hat/rotor assembly onto the axle hub. NOTE: The hat
must fit flush against the axle hub flange or excessive rotor run
out may result. Install three lug nuts (finger tight) to keep the
hat/rotor assembly in place while continuing with the installation.
•NOTE: This kit contains distinct right and left hand calipers that
must be mounted in a specific direction, as described below.
Lubricate the caliper mounting studs (10) with lightweight oil.
Initially place two .016” thick shims (11) on each stud between
the caliper and the bracket, as shown in Figure 1 and Photo 2.
With the bleed screws pointing up, mount the caliper (7) onto the
bracket (1) using lock nuts (8) and washers (9), Figure 1.
Temporarily tighten the lock nuts. Ensure that the caliper is
mounted so the largest pistons are at the rotor exit end of the
caliper, in relation to the direction of the rotor. View the rotor through the top opening of the caliper. The rotor should be centered in
the caliper, Photo 3. If not, adjust by adding or subtracting shims (4 and/or 5) between the bracket and the upright. Always use the
same amount of shims on each of the two mounting bolts. Once the caliper alignment is correct, remove the bracket mounting bolts
one at a time, apply red Loctite
® 271 to the threads, and torque to 60 ft-lbs.
Assembly Instructions
Page 4
Spindle Modifications
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 2
Photo 1
•These modifications should be performed by a qualified
machinist. Refer to figure 3, right. Only one view of the spindle
is shown, but the modifications need to be performed on both
spindles.
•Due to OEM tolerances, it may be necessary to modify the
spindle to clear the caliper mounting bracket. As per the
instructions, preinstall only the caliper mounting bracket with no
shims, carefully check for interference between the bracket and
the spindle that will not permit the bracket to seat flush against
the mounting lugs on the spindle. If there is interference, have
a qualified machine shop remove the material to allow the
bracket to seat flush to the spindle. Be sure the area is free of
sharp edges and burrs,
MATERIAL TO
BE REMOVED
2 PLACES
Figure 3. Spindle Modifications
Photo 3