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Jaguar XJ (X351) V8-5.0L SC Technical Service Bulletin # JTB00256 Date: 120504

Jaguar XJ (X351) V8-5.0L SC Technical Service Bulletin # JTB00256 Date: 120504



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Brakes - Squeal From Front Brakes 355mm Discs Only



JTB00256NAS1



04 MAY 2012



SECTION: 206



Squeal from Front Brakes - 355 mm Brake Discs Only



AFFECTED VEHICLE RANGE:



XF (X250) VIN: R47154 - S37595



Model Year: 2010 - 2012



XJ (X351) VIN: V00047 - V30513



Model Year: 2010 - 2012



XK (X150) VIN: B32753 - B47439



Model Year: 2010 - 2012



CONDITION SUMMARY:



Situation:



On vehicles fitted with 355mm (14.0 in) front brake discs only, a squeal noise from the front brakes may be evident at low speed and when



completing a stop. This may be caused by a brake caliper anchor and housing vibration.



Action:



In the event of a customer concern of the above, refer to the Repair Procedure outlined below to replace the front brake calipers springs.



PARTS



TOOLS:



Refer to Workshop Manual for any required special tools



WARRANTY



REPAIR PROCEDURE



REPLACE FRONT BRAKE CALIPER SPRING - BOTH SIDES



WARNING:



Make sure to support the vehicle with axle stands.



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1. Refer to Workshop Manual section 204-04: Wheels and tires, and remove the left-front wheel & tire assembly.



WARNING:



Take care when removing the spring.



CAUTION:



Removal of the clips is a delicate procedure; damage will occur if any force is used.



NOTE:



Note the installed position of the component prior to removal.



NOTE:



LH shown; RH similar.



2. Using a suitable tool, carefully remove and discard the brake caliper spring.



^ Lever the anti-rattle spring in the center of the spring until either side is released.



CAUTION:



Make sure that the new-design spring is installed to the vehicle.



3. Discard the old spring.



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WARNING:



Take care when installing the spring.



CAUTION:



Make sure that the new-design spring is installed to the vehicle.



NOTE:



LH shown; RH similar.



4. Install the new-design spring.



^ Secure the bottom arm of the anti-rattle spring under the bottom anchor bracket of the caliper.



^ Compress the upper spring arm into the correct position, under the upper anchor bracket, whilst retaining the logo plate.



^ Using the screw-driver, tap the central locating tag into the locked position.



CAUTION:



Make sure that the new-design spring is correctly installed to the noted removal position.



5. Check that the new-design spring is correctly installed.



6. Refer to Workshop Manual section 204-04: Wheels and tires, and install the left-front wheel & tire assembly.



7. Repeat steps 1 - 6 to the right-front brake caliper.

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