Wilwood W6A Front Caliper and Bracket Upgrade Kit - Manual (Page 4)

Assembly Instructions
• 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 (6) with lightweight oil.
Initially place one .016” thick shim (7) on each stud as shown in
Figure 1 and Photo 1. With the bleed screws pointing up, mount
the caliper (3) onto the bracket (1) using lock nuts (4) and
washers (5), Figure 1. Ensure that the caliper is mounted so that
the largest pistons are at the rotor exit end of the caliper, in
relation to the direction of rotor rotation. Temporarily tighten the
lock nuts and view the rotor through the top opening of the
caliper. The rotor should be centered in the caliper, Photo 2. If
not, adjust by adding or subtracting shims (2) 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 65 ft-lb.
• Remove the two pad retaining pins from the caliper (3) by
carefully popping out the pin retaining clips and sliding out the
pins. Insert the brake pads (8) into the caliper, with the friction
material facing the rotor, as shown in Photo 3. Check that the top
of the brake pad is flush with the outside diameter of the rotor,
Photo 4. If not, adjust by adding or subtracting shims (7)
between the caliper and the bracket. After the caliper pad height
is set, secure the brake pads in place with the pad retaining pins
and clips. Torque the caliper lock nuts (4) to 47 ft-lb.
• Remove the lug nuts that were holding the rotor in place.
Temporarily install the wheel and torque the lug nuts to the
manufacturer’s specification. Ensure that the wheel rotates freely
without any interference.
Installing the New Flexlines
•NOTE: OEM rubber brake hoses generally cannot be adapted to
Wilwood calipers. The caliper inlet fitting is a 1/8-27 NPT. The preferred
method is to use steel adapter fittings at the caliper, either straight, 45
or 90 degree and enough steel braided line to allow for full suspension
travel and turning radius, lock to lock. Wilwood offers a brake flex line
hose kit to fit this application, order part number 220-8176 for all 1997-
2004 (C-5), or part number 220-9100 for all 2005-present (C-6).
Hose kits include hoses, fittings, etc., all in one package for this
application. Carefully route hoses to prevent contact with moving
suspension, brake or wheel components. NOTE: Wilwood hose kits are designed for use in many different vehicle applications and it
is the installer's responsibility to properly route and ensure adequate clearance and retention for brake hose components.
•NOTE: Specified brake hose kits may not work with all Years, Makes and Models of vehicle that this brake kit is applicable to, due to
possible OEM manufacturing changes during a production vehicle's life. It is the installer's responsibility to ensure that all fittings and
hoses are the correct size and length, to ensure proper sealing and that they will not be subject to crimping, strain and abrasion from
vibration or interference with suspension components, brake rotor or wheel.
•In absence of specific instructions for brake line routing, the installer must use his best professional judgment on correct routing and
retention of lines to ensure safe operation. Test vehicle brake system per the 'minimum test' procedure stated within this document
before driving. After road testing, inspect for leaks and interference. Initially after install and testing, perform frequent checks of the
vehicle brake system and lines before driving, to confirm that there is no undue wear or interference not apparent from the initial test.
Afterwards, perform periodic inspections for function, leaks and wear in a interval relative to the usage of vehicle.
FLEXLINE
BRACKET
CLIP
90° ELBOW
FRAME
HARDLINE
WILWOOD
W6A CALIPER
Figure 4. Brake Line Diagram
Page 4
Photo 1 Photo 2
Photo 3 Photo 4