JAGUAR XFR 2010 1.G Workshop Manual

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.

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.

5. NOTE: Left-hand shown, right-hand similar.

Torque: 10 Nm





















6. CAUTIONS:


Always plug any open connections to prevent
contamination.


If brake fluid is spilt on the paintwork, the affected
area must be immediately washed down with cold water.
NOTES:


To prevent the loss of brake fluid, using the special
tool apply the brake pedal and set to 40mm ( 1.6 in ) below
the rest position.


Left-hand shown, right-hand similar.
Torque: 42 Nm

7. NOTE: Left-hand shown, right-hand similar.
Release the 2 clips.





















8. NOTE: Left-hand shown, right-hand similar.
Release the clip. www.JagDocs.com

Installation
9.

























10.
WARNING: If the brake caliper piston seal is damaged
a new brake caliper must be installed.


CAUTION: Do not allow the brake caliper to hang on
the brake hose.


NOTE: Left-hand shown, right-hand similar.

Torque: 28 Nm














NOTE: Left-hand shown, right-hand similar.

1. To install, reverse the removal procedure.

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

Published: 11-May-2011
Rear 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 (206-04B Rear Disc Brake - TDV6 3.0L Diesel /V8 5.0L Petrol/V8 S/C 5.0L Petrol,
Removal and Installation).

3.

4.
Installation



Torque: 103 Nm
























Remove the 2 clips.
Clean the components mating faces.
1.Toinstall,reversetheremovalprocedure.

Published: 11-May-2011
Rear 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

Special Tool(s)


206-080
Brake caliper piston retractor tool

206-081
Brake caliper piston retractor tool

303-588
Remover, Crankshaft Pulley/Damper Removal

WARNINGS:


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.


Do not allow dirt or foreign liquids to enter the reservoir. Use only new brake fluid of the correct specification from
airtight containers. Do not mix brands of brake fluid as they may not be compatible.


Brake pads must be renewed in axle sets only, otherwise braking efficiency may be impaired.


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


Only extraction bolt from special tool 303-588 is used.


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.

6. NOTE: Left-hand shown, right-hand similar.
Release the 2 clips.





















7. NOTE: Left-hand shown, right-hand similar.
Release the clip. www.JagDocs.com