brake JAGUAR XFR 2010 1.G Owners Manual

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

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

4. CAUTION: Always plug any open connections to
prevent contamination.
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.


Remove and discard the two sealing washers.










5. NOTE: Left-hand shown, right-hand similar.
6.

7. CAUTION: Removal of the clips is a delicate
procedure, damage will occur if any force is used.


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

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

















8. 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.
















9. NOTE: Left-hand shown, right-hand similar.
Release the clip.

Installation
10.
NOTE: Left-hand shown, right-hand similar.


1. WARNING: Do not use compressed air to clean brake components.
Dust from friction materials can be harmful if inhaled.


CAUTION: As the piston is pushed back into the caliper housing,
the brake fluid level in the reservoir will rise. Do not allow the reservoir
to overflow.
Press the piston into the caliper housing.

2.
Apply grease C2C-39930 to the areas indicated.

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

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.
















7. CAUTIONS:


Always plug any open connections to prevent
contamination.


Make sure new sealing washers are installed.

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 www.JagDocs.com

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).