Jaguar XJ (X351) V8-5.0L SC Technical Service Bulletin # JTB00256 Date: 120504 2010 Jaguar XJ (X351) V8-5.0L SC Page 77 Brakes - Squeal From Front Brakes 355mm Discs Only JTB00256NAS1 04 MAY 2012
Jaguar XJ (X351) V8-5.0L SC Technical Service Bulletin # JTB00256 Date: 120504
2010 Jaguar XJ (X351) V8-5.0L SC Page 77
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.
2010 Jaguar XJ (X351) V8-5.0L SC Page 78
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.
2010 Jaguar XJ (X351) V8-5.0L SC Page 79
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.
2010 Jaguar XJ (X351) V8-5.0L SC Page 77
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.
2010 Jaguar XJ (X351) V8-5.0L SC Page 78
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.
2010 Jaguar XJ (X351) V8-5.0L SC Page 79
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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