front brake JAGUAR XFR 2010 1.G Service Manual

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.

Published: 11-May-2011
Front Disc Brake - TDV6 3.0L Diesel /V8 5.0L Petrol/V8 S/C 5.0L Petrol - Front Disc Brake - System Operation and Component Description
Description and Operation

Control Diagram

NOTE: A = Hardwired



Item Description 1 Battery 2 Megafuse (250 A) 3 Front brake pad wear sensor 4 Rear brake pad wear sensor 5 Instrument cluster 6 CJB (central junction box) 7 Power distribution box

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.

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

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

Removal


CAUTION: Brake discs must be renewed in pairs.


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: Brake Pads - Vehicles With: High Performance Brakes (206-03B Front Disc Brake - TDV6 3.0L Diesel /V8 5.0L Petrol/V8 S/C 5.0L Petrol,
Removal and Installation).

3. Torque: 115 Nm 4.
Remove the 2 clips.
Clean the components mating faces.













Installation 5. Repeat the above procedure on the opposite side.

1. To install, reverse the removal procedure.

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.

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

Removal

1. WARNING: Make sure to support the vehicle with axle stands.
Raise and support the vehicle.

2. Remove the front brake disc.
For additional information, refer to: Brake Disc - Vehicles With: High Performance Brakes (206-03A Front Disc Brake - V6 3.0L Petrol, Removal and Installation).

3. Remove the brake disc shield.
Remove the 2 rivets.













Installation

1. To install, reverse the removal procedure.
Install the rivets.

Published: 11-May-2011
Rear Disc Brake - TDV6 3.0L Diesel /V8 5.0L Petrol/V8 S/C 5.0L Petrol - Rear
Disc Brake - System Operation and Component Description
Description and Operation

Control Diagram

NOTE: A = Hardwired



Item Description 1 Battery 2 Megafuse (250 A) 3 Front brake pad wear sensor 4 Rear brake pad wear sensor 5 Instrument cluster 6 CJB (central junction box) 7Powerdistributionbox

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.

Braided steel hoses are used to connect the brake pipes to the front and rear brake calipers.