Wilwood Dynapro Dust-Boot Rear Parking Brake Kit - Manual (Page 3)

General Information
• Installation of this kit should ONLY be performed by persons experienced in the
installation and proper operation of disc brake systems. Before assembling this
Wilwood rear disc brake kit, double check the following to ensure a trouble free
installation.
• Inspect the contents of this kit against the parts list to ensure that all components
and hardware are included.
•Make sure this is the correct kit to fit the axle housing flange, not necessarily the rear
end make. Many times aftermarket manufacturers put a different make of axle
housing flange on the stock rear end housing (Figure 6). Example; Big Ford rear
ends with Olds-Pontiac flanges, therefore, an Olds-Pontiac rear disc brake kit would
be the correct kit to order. Also, shock clearance may be a problem. They may have
to be modified and/or relocated to clear the Wilwood kit after final assembly.
• Verify your wheel clearance using Figure 2.
•Verify The Following Measurements Before Assembly.
• Bearing outside diameter.
• Axle housing flange mounting pattern to pattern in bracket.
• Stud pattern on axle flange to stud pattern in hat.
• Axle center register diameter is 2.80”, Figure 3. This kit uses Wilwood’s
removable center register adapters. Rotors can either be centered on the axle
register, i.e. register-centric or centered on the wheel studs, i.e. stud-centric.
Due to variations in wheel stud final diameters, register-centric centering can be
a more accurate method of centering the rotor to the axle. Wilwood offers
various diameter adapters for purchase in addition to the ones supplied in this
kit, see Table 1.
• Dimension from wheel side of axle flange to wheel side of axle housing flange
(see Figure 6, lower right hand corner). This dimension is critical to ensure
proper alignment of the rotor to the caliper, and should match offset given in the
kit description.
• The Wilwood hat utilized in this kit is drilled for 1/2” diameter wheel studs. NOTE: Some OEM axles have 7/16” (0.44”) wheel axle
studs. It is recommended that you upgrade to 1/2” studs. Dependent on the type of axle, this may be a simple stud change, or
may require the services of a machine shop to perform.
• Maximum axle flange diameter must be no larger than 6.61” w/.050” x 45° chamfer, Figure 3.
Figure 2. Wheel Clearance Diagram
CENTER
LINE OF
WHEEL
.30 (7,6)
4.02
(102,1)
7.04
(177,8)
WILWOOD ROTOR
WHEEL MOUNT
SURFACE
NOTE: A MINIMUM OF .080” CLEARANCE MUST BE MAINTAINED
BETWEEN THE WHEEL AND CALIPER IN ALL AREAS
.81 (20,6) ROTOR THICKNESS
2.80 (71,1)
CENTER REGISTRATION
1.00 (25,4)
RADIUS
CALIPER
Page 3
Parts List
1
2
3
3A
4
4A
5
6
7
8
9
10
2
2
2
2
2
2
4
4
16
1
2
2
249-7108/09
250-6285
160-7508
160-9812/13-BK
120-11481
120-11481-RD
240-10190
230-10025
240-1159
150-9136K
300-9636
300-11337 Bracket Kit (pair, one each, left and right)
Retainer, Bearing
Rotor, .81” Thk x 12.19” Dia (pair, one each, left and right)
Rotor, SRP Drilled and Slotted
Caliper, DynaPro
Caliper, DynaPro, Red
Washer, .391 I.D. x .625 O.D. x .063 Thick
Bolt, 3/8-24 x 1.25 Long, Hex head
Shim, .035 Thick
Pad, BP-10, Axle Set
Pad Clip Retainer
Adapter, Rotor Registration (supplied only with rotors with 3.06” center hole)
ITEM NO. PART NO. DESCRIPTION QTY
NOTES: Part Number 250-6285 is included with the bracket kit assembly 249-7108/09
Part Number 230-11861 Mounting Bolt Kit, includes P/N’s 230-10025, 240-10190 and 240-1159
Item 3A is an optional item and is available in the (D) drilled rotor kits. Add “-D” to end of part number when ordering.
Item 4A is an optional item and is available in the (R) red caliper kits. Add “-R” to end of part number when ordering.