Wilwood Forged Narrow Superlite 4R Big Brake Rear Parking Brake Kit - Manual (Page 5)

•Slide the rotor registration adapter (19) onto the axle register on the axle flange with the
smaller O.D. facing toward the rotor/hat (3). Align the correct hole pattern in the hat with
the stud pattern on the axle flange. NOTE: Some OEM and aftermarket axles come with
stud sizes larger than 0.50” diameter. Verify stud size and have a qualified machine shop drill
the hats to the correct size, if necessary. Slide the hat/rotor assembly (3 and 4) over the wheel
studs covering the bracket kit assembly (1) and against the axle flange face. Check to be sure
the hat seats squarely against the hub. Install a couple of lug nuts (finger tighten) to keep the
rotor/hat assembly in place while continuing with the installation.
•NOTE: Please reference the caution statement at the beginning of the assembly instructions.
The caliper mounting bracket assembly (7) should be installed first with clean, dry threads on
the mounting bolts (8). Install the bracket from the rear side of the bracket kit assembly (1) by
sliding bolt (8) through three flat washers (10), bracket (7), shim washer (12) and finally
through the spacer (13), see Figure 1. NOTE: End of bolt should not exceed inside face of
insert. The bracket must tighten squarely against the back side of the bracket kit assembly
(1). Inspect for interference from casting irregularities, machining ridges, burrs, etc. Use one
thin shim (12) between the bracket (7) and spacer (13) during initial trial fitting.
• Install one spacer (18) and one shim (9) over each pre-installed stud (17) on the radial mount
bracket (7). Slide the caliper (14) in place over the studs and rotor, then install the washer (16)
and lock nut (15) to hold the caliper in place. Snug the lock nuts (15) and check that the rotor
(4) is centered in the caliper (14). Add or subtract .015" shims (12) as necessary between the
caliper mounting bracket (7) and the spacer (13) to center the caliper (9).
•Remove the caliper center bridge pad retainer bolt, nut, and tube from the caliper. Slide the
brake pads (11) 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 (9) between the caliper (14) and mount bracket (7) 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 (3) 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 bracket kit assembly (1). Secure the caliper
mounting bracket (7) to the bracket kit assembly (1) using red Loctite ® 271. Torque bolts (8) to 180 in-lb. Reinstall the hat/rotor
assembly and again use lug nuts to hold it in place. Lubricate caliper mounting studs and nuts with lightweight oil, reinstall the caliper,
torque the caliper nuts (15) to 28 ft-lb.
•NOTE: Clevis and cable kits which attach to the parking brake assembly are not included in the Wilwood parking brake kit. Wilwood
offers a generic style parking brake cable kit, P/N 330-9371 for this application which can be ordered separately from your local Wilwood
dealer or by calling Wilwood customer service at (805) 388-1188.
•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.
•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.
Assembly Instructions (Continued)
Page 5
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 5. Safety Wire Diagram
Figure 4. Retainer / Axle Diagram
BEARING RETAINER WILWOOD BACKING PLATE
BEARING
AXLE FLANGE
LUG STUDS
WILWOOD BEARING
RETAINER LIP FACES
TOWARDS THE
BEARING
AXLE FLANGE TUBE