Brakes - Shudder When Braking
No: TSB-06-35-001REVIIDATE: May, 2006
MODEL: 2006 Raider
SUBJECT:
SHUDDER WHILE BRAKING
This bulletin revises and replaces TSB-06-35-001REV, to correct the warranty information. Revised information is indicated by black arrow.
PURPOSE
Some customers may complain of a vibration or shudder in the brake pedal when the brakes are applied at highway speeds. To eliminate this condition, replace the rear brake shoes with the new, improved brake parts as described in this bulletin. If the front brake rotors have not been previously replaced, resurface the front brake rotors with an approved on-car brake lathe.
AFFECTED VEHICLES
2006 Raider
PROCEDURE
1. Verify that the parking brake system is functioning properly. Refer to Group 36 in the Raider service manual.
2. Raise the vehicle. Remove both rear wheel and tire assemblies.
3. Remove and discard the clip nuts securing the brake drum to wheel studs.
4. Remove the brake drum.
a. If the drum is difficult to remove, remove the rear plug from the access hole in the support plate. Back-off self adjuster by inserting a thin screwdriver into the access hole and push lever away from the adjuster star wheel. Then insert an adjuster tool into the brake adjusting hole and rotate the adjuster star wheel to retract the brake shoes.
5. Install the new rear brake shoe kit (listed in the PARTS INFORMATION section of this bulletin) as described below.
IMPORTANT:
The rear brake shoe kit comes already assembled. It is designed to be installed as an assembly. Do not disassemble the kit.
6. Use brake parts cleaner to clean the individual brake components, including the support plate and wheel cylinder exterior.
7. Disengage and remove the shoe return 5 spring from the brake shoes.
8. Remove the shoe hold down clips and pins.
9. Remove the parking cable from the brake parking lever.
10. Lift the shoes and adjuster assembly from the brake backing plate, while carefully feeding the brake parking lever through the boot.
11. Clean the backing plate and wheel cylinder piston ends with brake parts cleaner and a clean shop towel.
12. Apply brake lubricant (p/n 04796269) to the backing plate pads and return spring bracket contact areas in the eight locations shown.
13. Apply a small amount of brake grease to the wheel cylinder piston ends.
CAUTION
Use only brake grease pin J8126688 (listed in the PARTS INFORMATION section of this bulletin). This special grease is required for this procedure.
14. Install the new shoes and adjuster assembly to the backing plate. Carefully guide the parking brake lever through the boot. Use care to prevent damaging the boot.
15. Install the parking brake cable.
16. Install the new brake shoe hold down springs, hold down pins, lower return spring, lever pawl, and lever pawl spring provided in the brake shoe kit.
17. Use brake cleaner to clean the axle flange and brake drum pilot. Remove any foreign material, which could prevent the drum from fully seating on the axle flange.
18. Adjust the brake shoes to drum with a brake gauge. Allow 0.64 mm (0.025 inch) clearance. Be sure the shoes are centered on the backing plate, then install the drum on the vehicle.
19. Use brake parts cleaner to clean the drum and wheel pilot. Remove any foreign material, which could prevent the wheel from fully seating on the drum and pilot.
20. Reinstall the wheel and tire assembly. Pre-tighten the lug nuts to 7 Nm (5 ft/lbs) to center the wheel. Then tighten the lug nuts to 183 Nm (135 ft/lbs).
21. Repeat Steps 7 through 20 on the rear brakes on the other side of the vehicle.
22. If necessary, adjust the parking brake tension. Refer to Group 35 in the Raider service manual.
23. Check the vehicle's repair history.
a. If the front brake rotors have NOT previously been replaced, go to Step 24 to resurface the front brake rotors.
b. If the front brake rotors have previously been replaced, go to Step 25. Do not resurface the brake rotors.
24. If the front brake rotors have NOT previously been replaced, resurface both front brake rotors, using an on-car brake lathe only (use Mitsubishi Special Tool 54-MITS-PKG or equivalent.
25. Lower the vehicle. Apply pressure to the brake pedal to verify that the brake system is functioning properly.
26. Verify that the parking brake system is functioning properly.
27. Test drive the vehicle to verify that the brake shudder is eliminated.
PARTS INFORMATION
WARRANTY INFORMATION