vi number JAGUAR X308 1998 2.G Service Manual

Rear
Brake Disc Runout Check Vehicles With: Brembo Brakes
Special Service tools
Di
al Test Indicator Gauge and Stand.
1.


WA
RNING:
BRAKE DUST, IF INHALED CAN DAMAGE YOUR HEALTH. ALWAYS REMOVE BRAKE DUST USING A VACUUM BRUSH. DO NOT USE A COMPRESSED-AIR LINE TO DISPERSE BRAKE DUST
INTO THE ATMOSPHERE.
CA
UTION:
Replacement of nuts and bolts: Various thread-locking devices are used on nuts and bolts
throughout the vehicle. These devices restrict the number of times a nut or bolt can be used. See
section <<100-00>> for information.
CA
UTION:
The Brembo caliper is aligned to the brake disc when it is first installed to the vehicle, therefore,
care must be taken not to disturb this alignment. When removing the caliper; remove the bolts
that secure the anchor bracket to the hub carrier only. DO NOT loosen any other caliper bolts.
Raise rear of vehicle and support on stands. Refer to section <<100-02>>.
2. Remove wheel. Refer to operation <<74.20.05>>.

Front Disc Brake -
Lubri
cants, Fluids, Sealants and Adhesives
Torques - Brembo Brakes
Torques
Brake Tube, Hoses and Bracket Torques
CAUTI
ON: Replacement of
nuts and bolts: Various thread-locking devices are used on nuts and bolts throughout the
vehicle. These devices restrict the number of times a nut or bolt can be used. See section 100-00 for information.


UnitS
pecification
Brake flu

id
ITT Supe
r Dot 4
Com

ponent
Nm
B

olt - anchor bracket to vertical link
18
0
Bo

lt - caliper to anchor bracket
DO
NOT REMOVE
Bleed n

ipple
12
-16
Hose u

nion to caliper
22
-26
Com

ponent
Nm
Bol

t - caliper carrier to vertical link
14
0
Guide

Pin - caliper housing to caliper carrier
25
-30
Com

ponent
Nm
Bleed n

ipple - front
4-
6
Bleed n

ipple - rear
8-1
1
Hose to fr

ont caliper
10
-14
Hose union to rear cal

iper - union bolt
30
-40
M1

0 hose locknut
15
-20
M10

brake tube female-nut
13
-17
M10

brake tube male-nut
13
-17
M12

brake tube male-nut
15
-20
M18

brake tube male-nut
22
-28
Brake tube clip retention

-bracket to body
4-
6

Front Disc Brake - Front Disc Brake
Description and Operation


The brake disc is mounted on the wheel studs and is clamped between the wheel and hub. Cooling ducts run through the
center of the brake disc to provide the required ventilation to keep the disc cool under operating conditions.
The caliper carrier, which is se cured to the vertical link by two bolts, carries the single-pis ton caliper housing. The caliper
housing is secured to the caliper carrier by two guide-pins and an anti-rattle spring. When the brakes are applied the
caliper-housing piston pushes th e brake pad in front of it, towards the brake di sc. This movement forces the caliper housing
to move along the guide-pins, in the oppo site direction of the piston, to apply the second brake pad. The brake disc is
therefore gripped between the two pads. As brake pressure is increased the grip on the brake disc is increased to slow-down
the rotation of the road wheel.
The disc brakes requ ire no adjustment.
It
e
m
Par
t
Number
De
scr
iption
1—B
r
ake Disc
2—Caliper Housin
g
3—Caliper Carrier
4—Brake Pads
5—Guide P i
ns
6—Du
st
Covers
7—An
ti
-rattle Spring
8—Du
st
Shield
9—Brake Hos
e

10—Bleed Nipp
le

• C
AUTIONS:
The Brembo caliper is aligned to the brak e disc when it is first installed to the vehicle, therefore, care must be taken
not to disturb this alignment. When removi ng the caliper; remove the bolts that secure the anchor bracket to the vertical
link only. DO NOT loosen any other caliper bolts.
Do not loosen bolts securing brake disc to disc mounting.
Brembo calipers and discs provide higher -performance braking using the existing hydraulic braking system. The brakes are
installed to the vehicle using unique vertical links, hubs, hydraulic hoses and disc shields.
The front brake disc consists of a ventilated, cross-drilled disc, bolted to a disc carrier. The disc assemb ly is mounted on the
wheel studs and clamped be tween the wheel and hub.
A unique feature of the front disc is th e slanted (non radial) ventilation webs which lean the opposite-way to the disc's
direction of rotation. This design enables he at generated by the disc to be dispersed by air entering at the disc's center and
being forced outwards through the cooling ducts.
Due to the use of fixed calipers in place of the standard floating caliper, certain lateral dimensions on the vertical link and
It
em
Par
t Number
De
scription
1—B

rake Disc
2—Caliper


3—Anch

or Bracket
4—Anchor Pl

ate to Vertical Link - Bolts
5—Brake Pad

s
6—Guide P

ins
7—Anti-r

attle Spring
8—Di

sc Shield
9—Brake Hos

e
10—Bleed Nipp

les


Front Disc Brake—
Brembo

Front Disc Brake - Brake CaliperVehicles
With: Standard Brakes
Re
moval and Installation
Remov

al
W
ARNING: BRAKE DUST, IF INHALED CAN DAMAGE YOUR
HEALTH. ALWAYS REMOVE BRAKE DUST USING A VACUUM
BRUSH. DO NOT USE A COMPRESSED-AIR LINE TO DISPERSE BRAKE DUST INTO THE ATMOSPHERE.
• CAUTIONS:
Replacement of nuts and bolts: Various thread-locking de vices are used on nuts and bolts throughout the vehicle.
These devices restrict the number of times a nut or bolt can be used. See section 100-00 for information.
Remove brake fluid spilla ge immediately from paint work, with clean water.
A new brake hose must be installe d when replacing a brake caliper.
The brake pad adhesive backing must not be reused, therefore always install new brake pads, irrespective of the
condition of the original pads when replacing a brake caliper. Always replace brake pads as an axle set.
S
pecial Tool(s)

Brake Pedal

Hold Tool
JDS 9013
1. O
pen engine compartment and fit
paint work protection covers
to fenders.
2. Raise vehicle on a four-post lift.
3. Raise front of vehicle and support on stands. Refer to Section
100-02.
4. Remove front wheels. See Section 204-04.

5. NOTE
: The following three pictorial procedures must be
carried-out to minimize brake fl uid loss when disconnecting the
brake hose.
Open Left-Hand-Front and Left-H and-Rear caliper bleed nipples.
Connect
a bleed tube and co
ntainer to the calipers.
O
pen bleed nipples.
6. Depress and hold down brak e pedal at the specified
measurement using special tool.
1. Position tool between brake pedal and seat frame.
2. Turn the tool wheel unti l the brake pedal is held

Front Disc Brake - Brake CaliperVehicles With: High Performance Brakes
Re
moval and Installation
Remov

al
S
pecial Tool(s)

Brake Pedal

Hold Tool
JDS 9013
1. WARNING: BRAKE DUST, IF INHALED CAN DAMAGE
YOUR HEALTH. ALWAYS REMOVE BRAKE DUST USING A VACUUM
BRUSH. DO NOT USE A COMPRE SSED-AIR LINE TO DISPERSE
BRAKE DUST INTO THE ATMOSPHERE.
• CAUTIONS:
Replacement of nuts and bolts: Various thread-locking
devices are used on nuts and bolts throughout the vehicle. These
devices restrict the number of ti mes a nut or bolt can be used.
See section 100-00 for information.
Remove brake fluid spillage immediately from paint work,
with clean water.
The Brembo caliper is aligned to the brake disc when it is
first installed to the vehicle, therefore, care must be taken not to
disturb this alignment. When removing the caliper; remove the
bolts that secure the anchor bracket to the vertical link only. DO
NOT loosen any other caliper bolts.
Open engine compartment and fit paint work protection covers
to fenders.
2. R
aise vehicle on a four-post lift.
3. Raise front of vehicle and support on stands. Refer to Section
100-02.
4. Remove front wheels. Refe r to operation 74.20.05.

5. NOTE
: The following three pictorial procedures must be
carried-out to minimize brake fl uid loss when disconnecting the
brake hose.
Open Left-Hand-Front and Left-H and-Rear caliper bleed nipples.
Connect
a bleed tube and co
ntainer to the calipers.
O
pen bleed nipples.
6. Depress and hold down brak e pedal at the specified
measurement using the special tool.

Front Dis
c Brake - Brake DiscVe
hicles With: Standard Brakes
Re
moval and Installation
Remov

al
• WAR
NINGS:
BRAKE DISCS MUST ALWAYS BE REPLACED IN PAIRS.
BRAKE DUST, IF INHALED CAN DAMAGE YOUR HEALTH. ALWAYS REMOVE BRAKE DUST USING A VACUUM BRUSH.
DO NOT USE A COMPRESSED-AIR LINE TO DI SPERSE BRAKE DUST INTO THE ATMOSPHERE.
CAUTION: Replacement of nuts and bolts: Various thread-locking devices are used on nuts and bolts throughout the
vehicle. These devices restrict the number of times a nut or bolt can be used. See section 100-00 for information.
1. O
pen engine compartment and in
stall paint work protection
covers to fenders.
2. Raise front of vehicle and suppo rt on stands. See Section 100-
02.
3. Remove front wheels. Re fer to Section 204-04.

4. CAUTI
ON: Remove brake flui
d spillage immediately from
paint work, with clean water.
Loosen brake fluid reservoir-cap.
Position a cloth around the
reservoir to collect any fluid
spillage.

5. CAU
TION: Tie caliper housing aside. Do not allow the
caliper housing to hang on the hydraulic hose, as this will damage
the hose.
Remove caliper housing from caliper carrier.
1. Remove anti-rattle spring.
2. Remove dust covers.
3. Remove guide pins.
Re
move and tie caliper housing aside.
6.
CAUTI
ON: Always install new brake pads, irrespective of
the condition of the original pads, when renewing brake discs.
• NOTE: The inner brake pad is fitted with a clip which secures
the pad into the caliper piston.
Remove brake pads from caliper housing.

Front Dis
c Brake - Brake DiscVehicles With: High Performance Brakes
Re
moval and Installation
Remov

al
1.
WAR
NINGS:
BRAKE DISCS MUST ALWAYS BE REPLACED IN PAIRS.
BRAKE DUST, IF INHALED CAN DAMAGE YOUR HEALTH.
ALWAYS REMOVE BRAKE DUST USING A VACUUM BRUSH. DO
NOT USE A COMPRESSED-AIR LINE TO DISPERSE BRAKE DUST
INTO THE ATMOSPHERE.
• CAUTIONS:
Replacement of nuts and bolts: Various thread-locking
devices are used on nuts and bolts throughout the vehicle. These
devices restrict the number of ti mes a nut or bolt can be used.
See section 100-00 for information.
The Brembo caliper is aligned to the brake disc when it is
first installed to the vehicle, therefore, care must be taken not to
disturb this alignment. When removing the caliper; remove the
bolts that secure the anchor bracket to the vertical link only. DO
NOT loosen any other caliper bolts.
The front brake discs are dire ctional and must be installed
to the correct side of the vehi cle. Refer to Description and
Operation, section 206-03 for further information.
Do not loosen bolts securing brake disc to disc mounting.
Open engine compartment and in stall paint work protection
covers to fenders.
2. R
aise front of vehicle and suppo
rt on stands. See Section 100-
02.
3. Remove front wheels. Refe r to operation 74.20.05.

4. CAUTI
ON: Remove brake flui
d spillage immediately from
paint work, with clean water.
Loosen brake fluid reservoir-cap.
Position a cloth around the
reservoir to collect any fluid
spillage.
5. CAUTI
ON: Always install new brake pads, irrespective of
the condition of the original pads, when renewing brake discs.

Front Dis
c Brake - Brake PadsVe
hicles With: Standard Brakes
Re
moval and Installation
Remov

al
W
ARNING: BRAKE DUST, IF INHALED CAN DAMAGE YOUR
HEALTH. ALWAYS REMOVE BRAKE DUST USING A VACUUM
BRUSH. DO NOT USE A COMPRESSED-AIR LINE TO DISPERSE BRAKE DUST INTO THE ATMOSPHERE.
CAUTION: Replacement of nuts and bolts: Various thread-locking devices are used on nuts and bolts throughout the
vehicle. These devices restrict the number of times a nut or bolt can be used. See section 100-00 for information.
1. O
pen engine compartment and fit
paint work protection covers
to fenders.
2. Raise front of vehicle and suppo rt on stands. See Section 100-
02.
3. Remove front wheels. See Section 204-04.

4. CAUTI
ON: Remove brake flui
d spillage immediately from
paint work, with clean water.
Loosen brake fluid reservoir-cap.
Position a cloth around the
reservoir to collect any fluid
spillage.

5. CAU
TION: Tie caliper housing aside. Do not allow the
caliper housing to hang on the hydraulic hose, as this will damage
the hose.
Remove caliper housing from caliper carrier.
1. Remove anti-rattle spring.
2. Remove dust covers.
3. Remove guide pins.
Re
move and tie caliper housing aside.

6.
NO
TE: The inner brake pad is fitt
ed with a clip which secures
the pad into the caliper piston.
Remove brake pads from caliper housing.
Discard
brake pads.
7. Clean all mating surfaces and remove brake dust, see
WARNING above.

Front Dis
c Brake - Brake PadsVehicl
es With: High Performance Brakes
Re
moval and Installation
Remov

al
1.
W
ARNING: BRAKE DUST, IF INHALED CAN DAMAGE
YOUR HEALTH. ALWAYS REMOVE BRAKE DUST USING A VACUUM
BRUSH. DO NOT USE A COMPRE SSED-AIR LINE TO DISPERSE
BRAKE DUST INTO THE ATMOSPHERE. Failure to follow this
instruction may result in personal injury.
• CAUTIONS:
Brake pads must always be replaced in axle sets.
Replacement of nuts and bolts: Various thread-locking
devices are used on nuts and bolts throughout the vehicle. These
devices restrict the number of ti mes a nut or bolt can be used.
For additional information, refer to: General Service Information

(10
0-00 General Information,
Description and Operation).
The High Performance brake ca liper is aligned to the brake
disc when it is first installed to the vehicle, therefore, care must
be taken not to disturb this alignment. When removing the
caliper; remove the bolts that se cure the anchor bracket to the
vertical link only. DO NOT loosen any other caliper bolts.
Open engine compartment and fit paint work protection covers
to fenders.
2. R
aise front of vehicle an
d support on stands.
For additional information, refer to: Using the Workshop Jack

(10
0-02 Jacking and Lifting, General Procedures).
3. Remove front wheels. Refer to operation.
For additional information, refer to: Wheel and Tire
(20
4-04
Wheels and Tires, Remo val and Installation).

4. CAUTI
ON: Remove brake flui
d spillage immediately from
paint work, with clean water.
Loosen brake fluid reservoir-cap.
Position a cloth around the
reservoir to collect any fluid
spillage.
5. Remove brake
pads from caliper.
1. Remove 'R' clips.
2. Withdraw pins from caliper.
3. Remove anti-rattle spring.
4. Discard brake pads.