wheel JAGUAR XFR 2010 1.G Workshop Manual

Page 607 of 3039

1 Brake pad wear sensor 2 Caliper body 3 Anti-rattle spring 4 Piston (2 off) 5 Piston seal (2 off) 6 Piston dust cover (2 off) 7 Inboard brake pad 8 Outboard brake pad 9 Retaining washer (2 off) 10 Brake disc 11 Rivet (2 off) 12 Heat shield 13 Front wheel knuckle/hub and bearing assembly 14 Caliper bolt (2 off) 15 Caliper carrier 16 Guide pin dust cover (2 off) 17 Guide pin bush (2 off) 18 Guide pin (2 off) 19 Bleed screw 20 Bleed screw dust cap

Page 608 of 3039

Published:
11-May-2011
Front Disc Brake - TDV6 3.0L Diesel /V8 5.0L Petrol/V8 S/C 5.0L Petrol -
F
ront Disc Brake - Overview

Description and Operation

OVERVIEW

Performance Brakes - 5.0L Supercharger V8 Vehicles
The performance front braking system features ventilated brake discs with dual piston sliding calipers. The discs are 380 mm
(14.96 in.) diameter x 36 mm (1.42 in.) thick.

The brake disc is manufactured from cast iron. The disc is retained on the wheel hub by two retaining washers and the wheel
nuts.
A brake pads wear sensors is fitted to the LH front brake.

Page 610 of 3039


BRAKE CALIPERS System Operation

When hydraulic pressure is supplied to the caliper, the pistons extend to force the inner pad against the brake disc. The caliper
reacts and slides along two guide pins to bring the outer pad into contact with the brake disc.

BRAKE PAD WEAR SENSORS

When a brake pad incorporating a brake pad wear sensor is approximately 75% worn, the sensor wire within the pad material
is worn through and the brake pad wear sensor goes open circuit. When the instrument cluster detects the open circuit, it
illuminates the amber LED (light emitting diode) in the brake warning indicator, displays an appropriate warning in the
message center and sounds a warning chime.
Refer to: Instrument Cluster (413-01 Instrument Cluster, Description and Operation).

NOTE: A new pad wear sensor lead must be fitted whenever the brake pads are changed, irrespective of the brake pad
warning sensor being triggered.



BRAKE CALIPERS Component Description

Each caliper is mounted within a fixed carrier that is secured to the front wheel knuckle with two bolts. The inboard brake pad
of the LH (left-hand) brake incorporates a wear sensor.

Each outboard brake pad is installed with a pressed steel anti-rattle spring. On SC (supercharger) vehicles, a badge with the
'R' symbol is formed on the anti-rattle spring.

BRAKE PAD WEAR SENSORS

The brake pad wear sensor is wired in series with a wear sensor on the RH (right-hand) rear brake and the instrument cluster.
If the thickness of one of the brake pads connected to a wear sensor decreases to a predetermined limit, the instrument
cluster illuminates the brake warning indicator.

Page 611 of 3039

Published: 02-May-2013
Front Disc Brake - TDV6 3.0L Diesel /V8 5.0L Petrol/V8 S/C 5.0L Petrol - Brake Caliper Vehicles With: High Performance Brakes
Removal and Installation

Removal


CAUTION: Brake fluid will damage paint finished surfaces. If spilled, immediately remove the fluid and clean the area
with water.


NOTE: Removal steps in this procedure may contain installation details.


1. WARNING: Do not work on or under a vehicle supported only by a jack.
Always support the vehicle on safety stands.
Raise and support the vehicle.

2. Remove the left-hand front wheel and tire.

Refer to: Wheel and Tire (204-04 Wheels and Tires, Removal and Installation).

3. www.JagDocs.com

Page 617 of 3039

8.
9. CAUTIONS:


Make sure that the road wheels are in the straight
ahead position.


Make sure that excessive force is not used. Failure to
follow this instruction may result in damage to the vehicle.


Make sure that the brake hose is not twisted and is
correctly located.
Pull downwards at the position shown.









10. Refer to: Brake System Bleeding (206-00 Brake System - General Information, General Procedures).

11. Refer to: Wheel and Tire (204-04 Wheels and Tires, Removal and Installation).

Page 619 of 3039

Published: 11-May-2011
Front Disc Brake - TDV6 3.0L Diesel /V8 5.0L Petrol/V8 S/C 5.0L Petrol - Brake Pads Vehicles With: High Performance Brakes
Removal and Installation

Removal


CAUTION: Brake fluid will damage paint finished surfaces. If spilled, immediately remove the fluid and clean the area
with water.


NOTE: Removal steps in this procedure may contain installation details.


1. WARNING: Do not work on or under a vehicle supported only by a jack.
Always support the vehicle on safety stands.
Raise and support the vehicle.

2. Refer to: Wheel and Tire (204-04 Wheels and Tires, Removal and Installation).

3.

Page 625 of 3039

8.
9. CAUTIONS:


Make sure that the road wheels are in the straight
ahead position.


Make sure that excessive force is not used. Failure to
follow this instruction may result in damage to the vehicle.


Make sure that the brake hose is not twisted and is
correctly located.
Pull downwards at the position shown.









10. Repeat the above procedure on the opposite side.

11. Refer to: Wheel and Tire (204-04 Wheels and Tires, Removal and Installation).

Page 629 of 3039

1 Retaining washer (2 off) 2 Brake disc 3 Rivet (3 off) 4 Brake dust shield 5 Rear wheel knuckle/hub and bearing assembly 6 Caliper carrier bolt (2 off) 7 Brake pad wear sensor 8 Guide pin dust cover (2 off) 9 Guide pin bush (2 off) 10 Guide pin (2 off) 11 Caliper carrier 12 Brake caliper housing 13 Piston 14 Piston dust cover 15 Inboard brake pad and shim 16 Outboard brake pad 17 Anti-rattle spring 18 Bleed screw 19 Bleed screw dust cap 20 Knurled pin 21 Parking brake lever 22 Parking brake return spring

Page 632 of 3039






BRAKE CALIPERS System Operation

When hydraulic pressure is supplied to the caliper, the pistons extend to force the inner pad against the brake disc. The caliper
reacts and slides along two guide pins to bring the outer pad into contact with the brake disc.

BRAKE PAD WEAR SENSORS

When a brake pad incorporating a brake pad wear sensor is approximately 75% worn, the sensor wire within the pad material
is worn through and the brake pad wear sensor goes open circuit. When the instrument cluster detects the open circuit, it
illuminates the amber LED (light emitting diode) in the brake warning indicator, displays an appropriate warning in the
message center and sounds a warning chime.
Refer to: Instrument Cluster (413-01 Instrument Cluster, Description and Operation).

NOTE: A new pad wear sensor lead must be fitted whenever the brake pads are changed, irrespective of the brake pad
warning sensor being triggered.



BRAKE CALIPERS Component Description

Each caliper is mounted within a fixed carrier that is secured to the rear wheel knuckle with two bolts. Each outboard brake pad
is installed with a wire anti-rattle spring.

The brake calipers on SC (supercharger) vehicles are painted and also include a logo badge, secured with two screws, which
must be removed in order to change the brake pads.
The inboard brake pad of the RH (right-hand) brake incorporates a wear sensor.

BRAKE PAD WEAR SENSORS

The brake pad wear sensor is wired in series with a wear sensor on the LH (left-hand) front brake and the instrument cluster. If
the thickness of one of the brake pads connected to a wear sensor decreases to a predetermined limit, the instrument cluster
illuminates the brake warning indicator.

Page 633 of 3039

Published: 02-Oct-2012
Rear Disc Brake - TDV6 3.0L Diesel /V8 5.0L Petrol/V8 S/C 5.0L Petrol - Brake
Caliper Vehicles With: High Performance Brakes
Removal and Installation

Removal


WARNING: Failure to release the tension and calibrate the electric parking brake during rear parking brake related service
procedures, could cause the parking brake to function incorrectly or become inoperative.


CAUTION: Brake fluid will damage paint finished surfaces. If spilled, immediately remove the fluid and clean the area
with water.


NOTE: Removal steps in this procedure may contain installation details.


1. WARNING: Do not work on or under a vehicle supported only by a jack.
Always support the vehicle on safety stands.
Raise and support the vehicle.

2. Refer to: Wheel and Tire (204-04 Wheels and Tires, Removal and Installation).

3. Refer to: Parking Brake Cable Tension Release (206-05 Parking Brake and Actuation, General Procedures).

4.

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