Wilwood Forged Narrow Superlite 4R Big Brake Rear Brake Kit For OE Parking Brake - Manual (Page 4)

Assembly Instructions
Assembly Instructions (numbers in parenthesis refer to the part list/diagram on the preceding pages):
• The caliper mount bracket assembly (1) should be installed first with clean, dry threads on the mounting bolts. Install the bracket (1) on
the inboard side of the hub by sliding bolt (2) through washer (3). Place two shim washers (4) between the bracket (1) and the mounting
ears. The bracket must tighten squarely against the inboard side of the caliper mount ears on the upright. Inspect for interference from
casting irregularities, machining ridges, burrs, etc. Later, after the caliper, pad, and rotor alignment has been checked, and any
necessary shims have been put in place, the mounting bolts should be coated with red Loctite
® 271 and torqued to 47 ft-lbs.
• With the larger I.D. side of the rotor (6) facing away from the hat (7), bolt rotor (6) to hat (7)
through the backside of the rotor using washers (8) and bolts (9). Using an alternating
sequence, apply red Loctite® 271 to the threads and torque bolts to 140 in-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.
• Align the hole pattern on the hat and rotor assembly (6 and 7) with the stud pattern on the axle
flange. Slide the hat/rotor assembly (6 and 7) over the wheel studs and against the axle flange
face. Check to be sure the hat seats squarely against the axle flange face. The axle flange
must be free from any rust, debris, casting burrs, machining irregularities, etc. Use several lug
nuts to hold the rotor and hat firmly against the axle flange during the next phases of the
installation and clearance checking procedures.
•Lubricate caliper mounting studs (13) and nuts (11) with lightweight oil. Install spacer (15) and two shims (14) over each stud (13) on
the radial mount bracket (1). Slide the caliper (10) in place over the studs and rotor. -Snug the lock nuts (11) and check that the rotor
(6) is centered in the caliper (10). Add or subtract shims (4 and/or 5) as necessary between the caliper mount bracket (1) and the
caliper mounting ears on the upright assembly to center the caliper. NOTE: Move the rear suspension through its complete range of
motion checking for any interference between the Wilwood brake caliper and suspension components. For optimum clearance, it may
be necessary to reverse the sway bar end-link mounting bolt with the nut inward, away from wheel.
• Remove the caliper center bridge pad retainer bolt, nut, and tube from the caliper. Slide the brake pads (16) into place. They should
install easily without interference. Check that the outside radius of the brake pad is flush with the outside diameter of the rotor face.
Add or subtract shims (14) between the caliper and mount bracket to gain the proper alignment. Reinstall the center bridge pad retainer
tube, bolt, and locknut. The locknut should be snug without play in the bolt or tube. Be cautious not to over tighten.
• Adjust the parking brake shoes outward (using a drum shoe adjustment tool available at your local auto parts store) while spinning the
hat (7) until a slight drag is felt against the hat/drum. Remove the lug nuts that were holding the hat/rotor in place. Install the wheel
and lug nuts. Check to see that the wheel rotates freely without interference.
• Once all clearances have been checked, remove the wheel, caliper, hat/rotor from the axle flange. Secure the caliper mounting bracket
(1) to the OEM caliper mounting ears, bracket to be secured with bolts (2) using red Loctite ® 271 on threads. Torque the bolts to 47
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 (11) to 28 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 220-10632,
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
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