Jaguar XJ (X350). Manual — part 167

Item

Part Number

Description

1

Bleed screw dust cap

2

Bleed screw

3

Brake caliper housing

4

Anti-rattle spring (with 'R' type badge)

5

Piston

6

Piston dust cover

7

Inboard brake pad

8

Outboard brake pad

9

Brake disc

10

Retaining washers (2 off)

11

Rivets (3 off)

12

Brake dust shield

13

Anti-lock Brake System (ABS) sensor cable

14

Caliper carrier bolts (2 off)

15

Caliper carrier

16

Guide pin bush (2 off)

17

Guide pin (2 off)

18

Guide pin dust cover (2 off)

19

Brake hose

20

Bolt - brake hose to caliper

INTRODUCTION

The front performance type braking system used on the supercharged vehicle features 355 x 32 mm

(13.98 x 1.26 in) diameter ventilated brake discs, and composite aluminum and cast iron, single

piston, sliding calipers.

In addition, the brake calipers on the supercharged vehicle are painted and a logo badge is formed on

the anti-rattle spring.

The caliper is mounted within a fixed carrier that is secured to the front wheel knuckle with 2 bolts.

When hydraulic pressure is supplied to the caliper, the piston extends to force the inner pad against

the brake disc. The caliper reacts and slides along 2 guide pins to bring the outer pad into contact

with the brake disc.

Each inboard brake pad is installed with a pressed steel anti-rattle spring.

NOTE:

There is no wear indicator installed to the front brake pads.

The brake disc is manufactured from cast iron and is of the vented type. The disc is retained on the

wheel hub by 2 retaining washers and the wheel nuts.

www.

Front Disc Brake – Armoured

Item Part Number

Description

1

—

Brake pads

2

—

Brake caliper anchor plate

3

—

Brake caliper

4

—

Anti-rattle spring

5

—

Brake caliper retaining bolts

CAUTION: The brake caliper is aligned / centralized to the brake disc when the vehicle is built. The vehicle may

have shims fitted between the brake caliper anchor plate and the wheel knuckle. Care must be taken not to disturb this
alignment. When removing the caliper; remove only the bolts that secure the brake caliper to the brake caliper anchor
plate. DO NOT loosen any other caliper bolts. This alignment / centralization MUST be checked / set when the wheel
knuckle is replaced. Failure to follow this instruction may result in damage to the vehicle.

The front disc brake system consists of the following components:



Brake pads



Six piston, apposed brake calipers



Ventilated brake discs



Brake caliper anchor plates



Steel braided brake hoses



Tamper proof brake bleeding screw shields

The brake caliper has two retaining bolts that attach the brake caliper to the brake caliper anchor plate. The
brake caliper anchor plate is attached to the wheel knuckle with two bolts. The hydraulic system provides
separate circuits for each pair of diagonally opposed wheels (i.e. left front, right rear and right front, left
rear).

The brake disc is manufactured from cast iron and is of the grooved vented type. It is retained on the hub by
two retaining clips and the wheel studs.

Published: Mar 12, 2014

Vehicles

Each brake caliper features two brake bleeding screws, which are fitted with tamper proof brake bleeding
screw shields, these shields must be fitted correctly to prevent unauthorized access when the wheels and
tires are installed.

www.