Jaguar XJ (X350). Manual — part 228

Description and operation

Hydraulic Brake Actuation

Item

Part Number

Description

1

—

Brake master cylinder

2

—

Brake fluid reservoir

3

—

Brake booster

4

—

Rear brake caliper

5

—

Brake lines

6

—

Front brake caliper

7

—

Hydraulic control unit

WARNING: Brake fluid contains polyglycol ethers and polyglycols. Avoid contact with the

eyes. Wash hands thoroughly after handling, as prolonged contact may cause irritation and

dermatitis. If brake fluid contacts the eyes, flush the eyes with cold water or eyewash solution and

seek medical attention. If taken internally, do not induce vomiting, seek immediate medical

attention. Failure to follow these instructions may result in personal injury.

The hydraulic brake system is of a pedal operated, diagonally split dual line brake system that

consists of the following components:

•

A brake booster.

•

A brake master cylinder.

•

Front brake discs.

•

Front brake disc calipers.

•

Rear brake discs.

•

Rear brake disc calipers.

•

Brake tubes and hoses.

•

Anti-lock brake system (ABS).

Brake Master Cylinder

The brake master cylinder is a dual piston type. The master cylinder operates as follows:

•

When the brake pedal is applied, pressure is applied by mechanical linkage to the primary
and secondary systems.

•

Brake master cylinder pistons apply hydraulic pressure to the two circuits.

The master cylinder consists of the following components:

•

Primary and secondary pistons.

•

Brake master cylinder fluid reservoir with integral fluid level warning indicator.

Adjustable Pedals

The adjustable pedal system comprises of a throttle pedal assembly with an adjustment motor and

drive cables. The drive cables are attached to the brake and clutch adjustment mechanisms. The

pedals move forward and rearward together. Two seperate pedal positions can be set and stored in

the memory for driver recall. The pedal position adjustment is by a switch fitted on the steering

column shroud.

www.

Hydraulic Brake Actuation

COMPONENT LOCATION

WARNING: Brake fluid contains polyglycol ethers and polyglycols. Avoid contact with the

eyes. Wash hands thoroughly after handling, as prolonged contact may cause irritation and

dermatitis. If brake fluid contacts the eyes, flush the eyes with cold water or eyewash solution and

seek medical attention. If taken internally, do not induce vomiting, seek immediate medical

attention. Failure to follow these instructions may result in personal injury.

Item

Part Number

Description

1

Brake master cylinder

2

Brake fluid reservoir

3

Brake booster

4

Rear brake caliper

5

Brake lines

6

Front brake caliper

7

Hydraulic control unit

OVERVIEW

The hydraulic brake system is of a pedal-operated, diagonally split dual line brake system that

consists of the following components:

•

A brake booster

•

A brake master cylinder

•

Front brake discs

•

Front brake disc calipers

•

Rear brake discs

•

Rear brake disc calipers

•

Brake tubes and hoses

•

Anti-lock brake system (ABS)

BRAKE MASTER CYLINDER

The brake master cylinder is a dual piston type. The master cylinder operates as follows:

•

When the brake pedal is applied, pressure is applied by mechanical linkage to the primary
and secondary systems

•

Brake master cylinder pistons apply hydraulic pressure to the two circuits

The master cylinder consists of the following components:

•

Primary and secondary pistons

•

Brake master cylinder fluid reservoir with integral fluid level warning indicator

ADJUSTABLE PEDALS

The adjustable pedal system comprises of a throttle pedal assembly with an adjustment motor and

drive cables. The drive cables are attached to the brake adjustment mechanisms. The pedals move

forward and rearward together. Two separate pedal positions can be set and stored in the memory

for driver recall. The pedal position adjustment is by a switch fitted on the steering column shroud.

www.