Wilwood Dynapro Radial Front Drag Brake Kit - Manual (Page 4)

Assembly Instructions (numbers in parenthesis refer to the parts list/diagram on the preceding page):
•The caliper mount bracket assembly (1) should be installed first with clean, dry threads on the mounting bolts. Install the bracket on the
inboard side of the spindle by sliding bolt (2) through flat washer (3), and spindle ear from the outboard side of the spindle. Place shim
washer (4) between the bracket (1) and the spindle (see figure 1). The bracket must tighten squarely against the inboard side of the
caliper mount bosses on the spindle body. Inspect for interference from casting irregularities, machining ridges, burrs, etc. Use one
thin shim (4) between the bracket and spindle during initial trial fitting. Later, after the caliper, pad, and rotor alignment has been
checked, and any necessary shims have been put in place, the mount bolts should be coated with red Loctite
® 271 and torqued to
60 ft-lbs.
•Assemble the rotor (5) to the hat (6) with the bolts (8) and washers (7) as shown in
Figure 1. Using an alternating sequence, apply red Loctite® 271 to the threads and torque
bolts to 25 ft-lb. 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 3-. Please refer
to Wilwood’s data sheet DS-386 (available at
www.wilwood.com/Pdf/DataSheets/ds386.pdf )
for complete safety wire installation instructions.
•Install the hat and rotor assembly onto the axle hub. Check to be sure the hat seats squarely
against the hub. The hub must be free from any rust, debris, casting burrs, machining
irregularities, etc. Use three lug nuts to hold the rotor and hat firmly against the hub during
the next phases of the installation and clearance checking procedures.
•Lubricate caliper mounting studs (12) and nuts (10) with lightweight oil. Install one shim (13)
over each stud (12) on the radial mount bracket. Slide the caliper (9) in place over the studs
and rotors and install the washer (11) and lock nut (10) to hold the caliper in place. Snug
the lock nuts (10) and check that the rotor (5) is centered in the caliper (9). Add or subtract
.015" shims (4) as necessary between the mount bracket and the spindle to center the
caliper.
•Remove the caliper center bridge pad retainer bolt, nut, and tube from the caliper. Slide the brake pads (14) into place. They should
install easily without interference. Check that the outside radius of the brake pad is aligned with the outside diameter radius of the rotor
face. Add or subtract shims (13) between the caliper and mount bracket to gain the proper alignment. Reinstall the center bridge pad
retainer tube, bolt, and lock nut. The locknut should be snug without play in the bolt or tube. Be cautious not to over tighten.
•Remove the lug nuts that were holding the hat in place. Install the wheel and torque the lug nuts to manufacturer’s specification. Check
to see that the wheel rotates freely without interference.
•Once all clearances have been checked, remove the wheel, caliper, hat, and rotor from the spindle and hub. Secure the caliper
mounting bracket (1) to the spindle using red Loctite ® 271. Torque the bolts to 60 ft-lbs. Reinstall the hat and rotor assembly and again
use several lug nuts to hold it in place. Reinstall the caliper, torque the caliper nuts (10) to 30 ft-lbs.
•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. Carefully route lines to prevent contact with moving suspension, brake or wheel
components. 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. Wilwood offers a hose kit, P/N 220-6458,
which includes hoses, fittings, etc., all in one package for this application.
•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.
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 3. Safety Wire Diagram
Assembly Instructions
Page 4