Wilwood Dynapro Dust-Boot Rear Parking Brake Kit - Manual (Page 4)

Disassembly Instructions:
•Disassemble the original equipment rear brakes:
Raise the rear wheels off the ground and
support the rear suspension according to the
vehicle manufacturer’s instructions.
Remove the rear wheels and disassemble the
drum brake assembly down to the bare axle.
Remove the stock bearing retainers from the
axles.
• Remove any nicks or burrs on the axle housing
flange, as well as the axle flange, that may interfere
with the installation of the new brake components.
• Clean and de-grease the axle and axle housing
flange.
Assembly Instructions (numbers in parenthesis refer to the parts list, and Figure 1 on the preceding
pages): CAUTION: All mounting bolts must fully engage clinch nuts. Be sure to check that all bolts
are either flush or protruding through flanged side of clinch nut after shimming, Figure 5.
•Orient the bracket assembly (1) as shown in Figure 1, and Photo 1, and slide it onto the axle. Insert
the axle and bracket into the axle housing. Ensure that the bracket assembly backing plate fits flush
against the axle housing flange.
•Install the bearing retainer (2) with the opening pointing upward and the lip facing inward (toward the
bearing), as shown in Figures 1 and 4, and Photo 2. Secure retainer and bracket assembly to the
axle housing flange using the Original Equipment Manufacturer (OEM) bolts and nuts, Figure 1.
Apply red Loctite® 271 to the OEM bolt threads and torque to OEM specifications.
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.
Disassembly Instructions
Figure 3. Axle Flange
Maximum Dimension
MAXIMUM
DIA 6.61"
TO FIT
WILWOOD
HAT
2.80”
REGISTER
.050 X 45°
CHAMFER
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
Table 1. Center Register Adapters
This kit includes a 3.06” center I.D. hat or rotor assembly and a 2.80” hub
register adapter ring to accommodate the installation of this kit on axles of
either dimension. For axles with different center register diameters, please
consult the table below for optional adapter ring sizes.
PART NO. REGISTER I.D. NOTE
NO ADAPTER USED
300-11732
300-11962
300-11338
300-11337
300-11532
300-11803
300-11901
300-11653
300-11339 3.06”
2.86”
2.84”
2.82”
2.80”
2.78”
2.52”
2.50”
2.18”
2.00” ROTOR CENTER HOLE I.D.
OPTIONAL
OPTIONAL
OPTIONAL
SUPPLIED WITH KIT
OPTIONAL
OPTIONAL
OPTIONAL
OPTIONAL
OPTIONAL (Machine to fit I.D.)
Photo 1