Brakes - Squeal From Rear Brakes

No: LTB00375 (Issue 1)

01 JUNE 2011

SECTION: 206
'Squeal' Noise from Rear Brakes





AFFECTED VEHICLE RANGE

CONDITION SUMMARY:

Situation:

On vehicles fitted with the 5.0L Supercharged engine only, a squeal noise may be evident from the rear brakes when the brakes are applied. This noise may be caused by brake pad material and design.

NOTE:
Brake linings, brake discs, and any other friction-related components are not covered when due to wear and tear but are covered for manufacturing, material defects, or the failure of another warranted part during the lifetime of the warranty. Refer to Warranty Policies and Procedures Manual for further details.

Action:

In the event of a customer concern of the above, refer to the Repair Procedure outlined below to replace rear brake pads and inspect and, if necessary, install new rear brake caliper guide pins.





PARTS

TOOLS:
Refer to Workshop Manual for any required special tools





WARRANTY:

NOTE:
Repair procedures are under constant review, and therefore times are subject to change; those quoted here must be taken as guidance only. Always refer to DDW to obtain the latest repair time.

REPAIR PROCEDURE

INSPECT / REPLACE REAR BRAKE CALIPER GUIDE PINS; REPLACE REAR BRAKE PADS

NOTE:
Check for any problems with the pad, disc, caliper, or for anything trapped between the disc and dirt shield and rectify any issues found (if appropriate this will be carried out as a separate claim). If noise is still present, continue with service Instructions outlined below.

1. Refer to Workshop Manual, section 100-02: Jacking and Lifting, and raise and support the vehicle.

2. Remove the rear wheel / tire assemblies.





3. Detach the brake pad warning sensor wire at the brake bleed nipple to avoid damage. (Figure 1)





4. Remove the rear brake caliper housing securing bolts. (Figure 2)

CAUTION:
Right-Hand Side - Do not allow the brake caliper to hang on pad wear warning sensor lead.





5. Remove the brake caliper housing assembly, and tie aside. (Figure 3)

CAUTION:
Should contamination occur, clean and re-lubricate with correct grease (SYL500010).

CAUTION:
Use only grease SYL500010; no other grease may be used on the pins.

NOTE:
The guide pin bore contains a light lubrication which should be retained. The area should not be cleaned and care should be taken to avoid contamination.





6. Remove and inspect the rear brake caliper guide pins: (Figure 4)

^ If there is one bushed guide pin at the top and a plain pin at the bottom, continue to step 7.

^ If there is not one bushed guide pin at the top and a plain pin at the bottom, install the service pin kit LR020221.

NOTE:
The bushed guide pin must be installed in the upper position; the plain guide bin must be installed in the lower position.

7. Refer to Workshop Manual, section 206-04: Rear Disc Brake, and install new rear brake pads, ensuring that the bushed guide pin is installed in the upper position and the plain guide bin is installed in the lower position.

8. Road test vehicle.

^ If the squeal noise is gone, release vehicle.

^ If the squeal noise is still present, record a sound file (if possible) and contact the Land Rover Technical HelpLine.