Wilwood Combination Parking Brake Caliper 1Pc Rotor Rear Brake Kit - Manual (Page 4)

Assembly Instructions (numbers in parenthesis refer to the parts list/diagram on the preceding pages):
• Orient the flange bracket (1) as shown in Figure 1, and install
using mounting bolts (2), washers (3), and nuts (4). Temporarily
tighten the mounting bolts. NOTE: The bracket must fit squarely
against the axle housing flange. Inspect for interference from
casting irregularities, machining ridges, burrs, etc. After the
bracket fitting has been confirmed, torque nuts to 40 ft-lbs.
• Re-install axle and refill the differential per manufacturer’s
instructions.
• The caliper mount bracket (5) 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 mounting bolts
(6) and washers (7). Initially place two .030” thick shims (8) on
each bolt between the flange bracket (1) and the caliper bracket,
Figure 1. Later, after the caliper alignment has been checked,
the mount bolts will be secured using red Loctite
® 271.
• Slide the rotor registration adapter (16) onto the axle register on
the axle hub with the smaller O.D. facing toward the rotor/hat (9),
Photo 2.
• Align the correct hole pattern in the rotor/hat with the stud pattern
on the axle flange and slide into place, Figure 1 and Photo 3.
NOTE: The rotor/hat must fit flush against the axle flange or
excessive rotor run out may result. Install three lug nuts (finger
tight) to keep the rotor/hat assembly in place while continuing
with the installation. NOTE: Some OEM and after market axles come with stud sizes larger than
0.50” diameter. Verify stud size and have a qualified machine shop drill the bolt circle of the
hat/rotor to the correct stud size, if necessary.
• Slide the brake pads (15) up into the caliper (10) from the bottom with the friction material facing the
rotor until the “v” spring clip snaps into place against the anvil, as shown in Figure 1 and Photo 4.
They should install easily without interference.
•Lubricate the caliper mounting studs (13) with lightweight oil. Initially place two .035” thick shims (14)
on each stud as shown in Figure 1. Mount the caliper (10) onto the bracket (5) using washers (12)
and lock nuts (11), as shown in Figure 1 and Photo 5. Temporarily tighten the mounting nuts and view
the rotor (9) from the end of the caliper. The rotor should be centered in the caliper, Photo 6. If not,
adjust by adding or subtracting .030” shims (8) between the caliper mounting bracket and the flange bracket (1) to center the caliper on
the rotor. Always use the same amount of shims on each of the two mounting bolts. Once the caliper alignment and pad centering are
correct, remove the bracket-to-bracket bolts one at a time, apply red Loctite® 271 to bolt threads, and torque to 60 ft-lb.
Page 4
Assembly Instructions
IMPORTANT:
• To ensure maximum performance from your parking brake system, the cables must be routed as straight as
possible. Bends in the cable can significantly reduce efficiency and thus reduce pull force at the brake. Tight
bends must be avoided with a minimum recommended bend radius of 6" to 8".
• Cables should be properly restrained to prevent "straightening" of bends when tension is applied. Restrain
movement of cable by affixing the cable sheath to body or chassis by fitting cable clamps at various points
over the length of cable or by using original equipment cable attachments points. The clamping method
chosen will require that cable sheath be held tightly without movement, crushing or causing interference to the
internal cable.
• Cables must be initially pre-stretched by multiple applications of the brake handle, then re-adjusted to correct
tension.
Photo 1
Photo 3 Photo 4
Photo 2
Small
O.D.
toward
rotor/hat
Photo 5