wilwood DISC BRAKES DS-560 TC 6R Rear Brake Kit Instruction Manual

www.wilwood.com
ASSEMBLY INSTRUCTIONS
FOR
1999 – 2011 GM 2500 TRUCK WITH 4.84″ AXLE CENTER REGISTER DIAMETER
For additional vehicle compatibility, visit www.wilwood.com
DS-560
TC 6R REAR BRAKE KIT FOR OE PARKING BRAKE WITH 16.00″ DIAMETER VENTED ROTOR
BASE PART NUMBER
140-9406
DISC BRAKES SHOULD ONLY BE INSTALLED BY SOMEONE EXPERIENCED AND COMPETENT IN THE INSTALLATION AND
MAINTENANCE OF DISC BRAKES
READ ALL WARNINGS

DS-560 TC 6R Rear Brake Kit

WARNING
IT IS THE RESPONSIBILITY OF THE PERSON INSTALLING ANY BRAKE COMPONENT OR KIT TO DETERMINE THE SUITABILITY OF THE COMPONENT OR KIT FOR THAT PARTICULAR APPLICATION. IF YOU ARE NOT SURE HOW TO SAFELY USE THIS BRAKE COMPONENT OR KIT, YOU SHOULD NOT INSTALL OR USE IT. DO NOT ASSUME ANYTHING. IMPROPERLY INSTALLED OR MAINTAINED BRAKES ARE DANGEROUS. IF YOU ARE NOT SURE, GET HELP OR RETURN THE PRODUCT. YOU MAY OBTAIN ADDITIONAL INFORMATION AND TECHNICAL SUPPORT BY CALLING WILWOOD AT 805-388-1188, OR VISIT OUR WEB SITE AT WWW.WILWOOD.COM. USE OF WILWOOD TECHNICAL SUPPORT DOES NOT GUARANTEE PROPER INSTALLATION. YOU, OR THE PERSON WHO DOES THE INSTALLATION MUST KNOW HOW TO PROPERLY USE THIS PRODUCT. IT IS NOT POSSIBLE OVER THE PHONE TO UNDERSTAND OR FORESEE ALL THE ISSUES THAT MIGHT ARISE IN YOUR INSTALLATION.
RACING EQUIPMENT AND BRAKES MUST BE MAINTAINED AND SHOULD BE CHECKED REGULARLY FOR FATIGUE, DAMAGE, AND WEAR.

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WARNING
DO NOT OPERATE ANY VEHICLE ON UNTESTED BRAKES!
SEE MINIMUM TEST PROCEDURE WITHIN
ALWAYS UTILIZE SAFETY RESTRAINT SYSTEMS AND ALL OTHER AVAILABLE SAFETY EQUIPMENT WHILE OPERATING THE VEHICLE
IMPORTANT · READ THE DISCLAIMER OF WARRANTY INCLUDED IN THE KIT
NOTE: Some cleaners may stain or remove the finish on brake system components. Test the cleaner on a hidden portion of the component before general use.

Important Notice – Read This First

Before any tear-down or disassembly begins, review the following information:

• Review the wheel clearance diagram (figure 2, page 3) to verify that there is adequate clearance with the wheels you will be using with the installation.
• This brake kit is not supplied with hydraulic lines or fittings and may require the purchase of additional lines or fittings to complete the installation. Wilwood offers an extensive listing of brake lines and fittings on our web site: www.wilwood.com.
• This brake kit is not supplied with parking brake cables hardware or adapters. Please see the note in the assembly instructions for vendor recommendations to purchase.
• Due to OEM production differences and other variations from vehicle to vehicle, the fastener hardware and other components in this kit may not be suitable for a specific application or vehicle.
• It is the responsibility of the purchaser and installer of this kit to verify suitability / fitment of all components and ensure all fasteners and hardware achieve complete and proper engagement. Improper or inadequate engagement can lead to component failure.

Photographic Tip

Important and highly recommended: Take photos of brake system before disassembly and during the disassembly process. In the event, trouble-shooting photos can be life savers. Many vehicles have undocumented variations, photos will make it much simpler for Wilwood to assist you if you have a problem.

Exploded Assembly Diagram

Parts List

1
2
3
4
5
5A
6
7
8
9
10
11
12
13
14| 250-9657
230-8967
150-9118K
240-8969
160-16994-GTB
160-16995/96-BK
170-14029
240-10191
230-14085
120-14317/18-FS
230-9182
240-11101
230-9080
240-1848
240-11855| Bracket, Caliper Mounting
Bolt, M14-2.00 x 40 mm, Hex Head
Pad, BP-10, Axle Set
Shim, .029” Thick
Rotor, GTB 1.38” Thick x 16.00” Dia., 12 x 10.75” Bolt Circle
Rotor, SRP Drilled and Slotted (one each, right and left)
Hat, 12 x 10.75” Bolt Circle, 8 x 6.50” Bolt Pattern, 1.91” Offset
Washer, .328” I.D. x .562” O.D. x .063” Thick
Bolt, 5/16-16 x 1.00” Long, Hex Head
Caliper, TC 6R
Nut, Self-Locking, 12 Point, 7/16-20
Washer, .453” I.D. x .750” O.D. x .063” Thick
Stud, 7/16-14 x 7/16-20 x 3.375” long (pre installed in bracket)
Washer, .441” I.D. x 1.003” O.D. x .030” Thick
Washer, .578” I.D. x 1.062” O.D. x .063” Thick| 2
4
1
16
2
2
2
24
24
2
4
16
4
12
4

NOTES:
Part Number 230-9810 Spindle Bracket Mounting Bolt Kit, includes P/N 230-8967, 240-8969 and 240-11855
Part Number 250-9658 Caliper Bracket Mounting Bolt Kit, includes P/N 230-9080, 230-9182, 240-1848, 240-11101, and 250-9657
Part Number 230-14086 Rotor Bolt Kit, includes P/N 230-14085 and 240-10191
Item 5A is an optional item and is included with the “-D” kits. Add “-D” to end of part number when ordering Wilwood offers an optional Braided Stainless Steel Hose Kit. Order part number 220-9811 (1999-2006), or part number 220-11196 (2007-2011) (neither line included in kit).

General Information

Installation of this kit should ONLY be performed by individuals experienced in the installation and proper operation of disc brake systems. Prior to any attempt to install this kit, please 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 exact make and model year of your axle. This kit is designed for direct bolt-on installation to 1999 through present model year GM 2500 Truck with a 4.84″ axle center register diameter.
Verify your wheel clearance using Figure 2.
Verify that the factory axle and stud pattern matches the stud hole pattern in the hats supplied with this kit. Axles that have been modified with different size studs or lug patterns may require modifications to the hat that must be performed by a qualified machinist.

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 wheel. Remove the two bolts from the backside of the upright that holds the stock caliper mounting bracket and lift off the bracket and stock caliper as one unit. You may have to unbolt the stock caliper from the caliper bracket before removal. Then slide off the rotor.
• Clean, de-grease the saved caliper bracket bolt and stock hub while removing any nicks or burrs.

Assembly Instructions

NOTE: Numbers in parenthesis refer to the parts list and Figure 1 on the preceding pages.

• The caliper mount bracket assembly (1) should be installed fiarst with clean, dry threads on the mounting bolts (2). Install the bracket by sliding bolt (2) through washer (14) from the rear side of the hub through the OEM caliper mounting bracket ears, then through an additional shim washer (4) and into the bracket (1). The bracket must tighten squarely against the outboard side of the caliper mount bosses on the upright. Inspect for interference from casting irregularities, machining ridges, burrs, etc. Use one shim (4) between the bracket and upright during initial trial fitting. Later, after the caliper, pad, and rotor alignment have been checked, and any necessary shims have been put in place, the mounting bolt threads (2) should be coated with red Loctite® 271 and torqued to 95 ft-lbs.

• Attach the rotor (5) to the hat (6) using bolts (8) and washers (7) as shown in Figure 1. Using an alternating sequence torque bolts to 25 ft-lbs. Safety wire the bolts 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 (5 and 6) with the stud pattern on the axle flange. Slide the hat/rotor assembly (5 and 6) 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 three 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 and nuts with lightweight oil. Install one shim (13) over each stud (12) on the radial mount bracket (1). Slide the caliper (9) in place over the studs and rotor and install the washers (11) [up to 4 may be required on each side to keep the lock nut from bottoming out on the stud], and lock nut (10) to hold the caliper in place. The caliper bleed screws should be pointing up. Snug the lock nuts (10) and check that the rotor (5) is centered in the caliper (9). Add or subtract .029” shims (4) as necessary between the caliper mount bracket and the caliper mount bosses on the upright assembly to center the caliper.

• Remove the two caliper center bridge pad retainer bolts, nuts, and tubes from the caliper. Slide the brake pads (3) 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 (13) between the caliper and mount bracket to gain the proper alignment. Reinstall the two center bridge pad retainer tubes, bolts, and lock nuts. The locknut should be snug without play in the bolt or tube. Be cautious not
  to over tighten.

• Remove the lug nuts that were holding the rotor in place. Install the wheel and torque the lug nuts to specification. Check to see that the wheel rotates freely without  interference.

• Once all clearances have been checked, remove the wheel, caliper and rotor from the axle flange. Secure the caliper mounting bracket (1) to the axle flange body with bolts (2) while coating the threads with red Loctite® 271. Torque the bolts to 75 ft-lbs. Reinstall the rotor and again use several lug nuts to hold it in place. Reinstall the caliper, torque the
  caliper nuts (10) to 47 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 (use PTFE tape on pipe threads for proper sealing to caliper) 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 220-9811 (1999-2006) and P/N 220-11196 (2007-2011), which includes hoses, fittings, etc., all in one package for this application.

• NOTE: 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.

• In absence of specific instructions for brake line routing, the installer must use his best professional judgment on correct routing and retention of lines to ensure safe operation. Test vehicle brake system per the ‘Minimum Test Procedure’ stated within this document before driving. After road testing, inspect for leaks and interference. Initially after install and testing, perform frequent checks of the vehicle brake system and lines before driving, to confirm that there is no undue wear or interference not apparent from the initial test. Afterwards, perform periodic inspections for function, leaks and wear in a interval relative to the usage of vehicle.

• Bleed the brake system, referring to the ‘Additional Information and Recommendations’ on page 5 for proper bleeding instructions. Check system for leaks after bleeding.

• Install the wheel and torque the lug nuts to manufacturer’s specification.

• Bed-in the brake pads per the procedure on page 6.

Additional Information and Recommendations

• NOTE: With the installation of after market disc brakes, the wheel track may change depending on the application. Check your wheel offset before final assembly.

• Please read the following concerning balancing the brake bias on 4 wheel disc vehicles.
  This GM 2500 Truck kit can be operated using the stock OEM master cylinder. However, as with most suspension and tire modifications (from OEM specifications), changing the brakes may alter the front to rear brake bias. Rear brakes should not lock up before the front. Brake system evaluation and tests should be performed by persons experienced in the installation and proper operation of brake systems. Evaluation and tests should be performed under controlled conditions. Start by making several stops from low speeds then gradually work up to higher speeds. Always utilize safety restraint systems while operating vehicle.

• For optimum performance, fill and bleed the new system with Wilwood Hi-Temp° 570 grade fluid or EXP 600 Plus. For severe braking or sustained high heat operation, use Wilwood EXP 600 Plus Racing Brake Fluid. Used fluid must be completely flushed from the system to prevent contamination. NOTE: Silicone DOT 5 brake fluid is NOT recommended for racing or performance driving.

• To properly bleed the brake system, begin with the caliper farthest from the master cylinder. Bleed the outboard bleed screw first, then the inboard. Repeat the procedure until all calipers in the system are bled, ending with the caliper closest to the master cylinder. If the caliper is fitted with bleed screws on four corners, make sure the bottom bleed screws are tight. Only bleed from the top bleed screws.
  NOTE: When using a new master cylinder, it is important to bench bleed the master cylinder first.

• Test the brake pedal. It should be firm, not spongy, and stop at least 1 inch from the floor under heavy load.
  If the brake pedal is spongy, bleed the system again.
  If the brake pedal is initially firm, but then sinks to the floor, check the system for leaks. Correct the leaks (if applicable) and then bleed the system again.
  If the brake pedal goes to the floor and continued bleeding of the system does not correct the problem, either air may be trapped in the system, or a master cylinder with increased capacity (larger bore diameter) may be required. Wilwood offers various lightweight master cylinders with large fluid displacement capacities (custom fabricated mounting may be required).

Brake Testing

WARNING · DO NOT DRIVE ON UNTESTED BRAKES BRAKES MUST BE TESTED AFTER INSTALLATION OR MAINTENANCE MINIMUM TEST PROCEDURE

• Make sure pedal is firm: Hold firm pressure on pedal for several minutes, it should remain in position without sinking. If pedal sinks toward floor, check system for fluid leaks. DO NOT drive vehicle if pedal does not stay firm or can be pushed to the floor with normal pressure.
• At very low speed (2-5 mph) apply brakes hard several times while turning steering from full left to full right, repeat several times. Remove the wheels and check that components are not touching, rubbing, or leaking.
• Carefully examine all brake components, brake lines, and fittings for leaks and interference.
• Make sure there is no interference with wheels or suspension components.
• Drive vehicle at low speed (15-20 mph) making moderate and hard stops. Brakes should feel normal and positive. Again check for leaks and interference.
• Always test vehicle in a safe place where there is no danger to (or from) other people or vehicles.
• Always wear seat belts and make use of all safety equipment.

Pad and Rotor Bedding

BEDDING STEPS FOR NEW PADS AND ROTORS ­ ALL COMPOUNDS
Once the brake system has been tested and determined safe to operate the vehicle, follow these steps for the bedding of all new pad materials and rotors. These procedures should only be performed on a race track, or other safe location where you can safely and legally obtain speeds up to 65 MPH, while also being able to rapidly decelerate.

• Begin with a series of light decelerations to gradually build some heat in the brakes. Use an on-and-off the pedal technique by applying the brakes for 3-5 seconds, and then allow them to fully release for a period roughly twice as long as the deceleration cycle. If you use a 5 count during the deceleration interval, use a 10 count during the release to allow the heat to sink into the pads and rotors.
• After several cycles of light stops to begin warming the brakes, proceed with a series of medium to firm deceleration stops to continue raising the temperature level in the brakes.
• Finish the bedding cycle with a series of 8-10 hard decelerations from 55-65 MPH down to 25 MPH while allowing a proportionate release and heat-sinking interval between each stop. The pads should now be providing positive and consistent response.
• If any amount of brake fade is observed during the bed-in cycle, immediately begin the cool down cycle.
• Drive at a moderate cruising speed, with the least amount of brake contact possible, until most of the heat has dissipated from the brakes. Avoid sitting stopped with the brake pedal depressed to hold the car in place during this time. Park the vehicle and allow the brakes to cool to ambient air temperature.

COMPETITION VEHICLES

• If your race car is equipped with brake cooling ducts, blocking them will allow the pads and rotors to warm up quicker and speed up the bedding process.
• Temperature indicating paint on the rotor and pad edges can provide valuable data regarding observed temperatures during the bedding process and subsequent on-track sessions. This information can be highly beneficial when evaluating pad compounds and cooling efficiencies.

POST-BEDDING INSPECTION ­ ALL VEHICLES

• After the bedding cycle, the rotors should exhibit a uniformly burnished finish across the entire contact face. Any surface irregularities that appear as smearing or splotching on the rotor faces can be an indication that the brakes were brought up to temperature too quickly during the bedding cycle. If the smear doesn’t blend away after the next run-in cycle, or if chatter under braking results, sanding or resurfacing the rotors will be required to restore a uniform surface for pad contact.

PRE-RACE WARM UP

• Always make every effort to get heat into the brakes prior to each event. Use an on-and-off the pedal practice to warm the brakes during the trip to the staging zone, during parade laps before the flag drops, and every other opportunity in an effort to build heat in the pads and rotors. This will help to ensure best consistency, performance, and durability from your brakes.

DYNO BEDDED COMPETITION PADS AND ROTORS

• Getting track time for a proper pad and rotor bedding session can be difficult. Wilwood offers factory dyno-bedded pads and rotors on many of our popular competition pads and Spec 37 GT series rotors. Dyno-bedded parts are ready to race on their first warm up cycle. This can save valuable time and effort when on-track time is either too valuable or not available at all, Dyno-bedding assures that your pads and rotors have been properly run-in and are ready to go. Contact your dealer or the factory for more information on Wilwood Dyno-Bedding services.

NOTE: NEVER allow the contact surfaces of the pads or rotors to be contaminated with brake fluid. Always use a catch bottle with a hose to prevent fluid spill during all brake bleeding procedures.

Parking Brake

WARNING · PARKING BRAKE

• Parking brake must be properly adjusted before use and must be manually readjusted for wear if parking brake handle or foot lever travel becomes excessive.
• The holding ability of the brake should be tested by stopping on a sloping surface and applying the parking brake while holding car with the hydraulic foot brake. This should be accomplished both facing up and down hill.
• Do not rely exclusively on the parking brake to hold the car; Curb wheels as recommended by the applicable diagram and put gear selector in park, or shift into first gear or reverse with a manual transmission.
• Diagram A – When parking facing downhill, turn front wheels towards the curb or right shoulder. This will keep from rolling into traffic if the brakes become disengaged.
• Diagram B – Turn the steering wheel to the left so the wheels are turned towards the road if you are facing uphill with a curb. The tires will catch the curb if the car rolls backward.
• Diagram C – When facing uphill without a curb, turn the wheels sharply to the right. If the vehicle rolls, it will go off the road rather than into traffic.
• When parking on a hill, always set the parking brake and move the gear selector into park, or shift into first or reverse gear if your vehicle has a manual transmission.

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Associated Components

260-13706
260-13707
260-8419
260-8420
260-11179
290-0632
290-6209
340-13831
340-13832
260-6764
260-6765
260-6766
260-4893
260-8555
260-8556
220-9811
220-11196| Wilwood Residual Pressure Valve (2 lb for disc brakes)
Wilwood Residual Pressure Valve (10 lb for drum brakes)
Wilwood Proportioning Valve, Knob Style
Wilwood Proportioning Valve, Lever Style
Wilwood Combination Proportioning Valve with Brake Light Switch
Wilwood Racing Brake Fluid (Hi-Temp° 570) (12 oz)
Wilwood Racing Brake Fluid (EXP 600 Plus) (16.9 oz)
Wilwood Floor Mount Brake Pedal (with balance bar)
Wilwood Swing Mount Brake Pedal (with balance bar)
Wilwood 3/4 inch High Volume Aluminum Master Cylinder
Wilwood 7/8 inch High Volume Aluminum Master Cylinder
Wilwood 1 inch High Volume Aluminum Master Cylinder
1-1/16 inch Tandem Master Cylinder (aluminum housing)
Wilwood 1 inch Aluminum Tandem Chamber Master Cylinder
Wilwood 1-1/8 inch Aluminum Tandem Chamber Master Cylinder
Stainless Steel Braided Flexline Kit, 1999-2006 H2/2500 Series, Rear
Stainless Steel Braided Flexline Kit, 2007-2011 H2/2500 Series, Rear

Wilwood Disc Brakes • 4700 Calle Bolero, Camarillo, CA 93012
DS-560V REV DATE: 07-26-23
www.wilwood.com
Phone 805 / 388-1188 • Fax 805 / 388-4938
• E-mail Additional Assistance: info@wilwood.com

References

• Wilwood Disc Brakes - Specialty OEM, Racing, and Street Performance Bolt-On Brake Kits
• Wilwood Disc Brakes - Search: 140-9406
• Wilwood Disc Brakes - Search: 220-11196
• Wilwood Disc Brakes - Search: 220-9811

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