Jaguar XJ (X350). Manual — part 152

Specifications

Lubricants, Fluids, Sealers and Adhesives

CAUTION: Do not use brake fluid ITT Super Dot 4 on 2006MY vehicles

onwards. Failure to follow this instruction may result in damage to the vehicle.

NOTE:

Brake fluid ITT Super Dot 4 has now been superseded by Shell ESL Super Dot 4 which is
the Jaguar recommended brake fluid. Shell ESL Super Dot 4 can be used on all model
years.

Item

Specification

Brake fluid Shell ESL

Brake Lining and Disc Specifications

Item

Specification

Front brake disc diameter - Vehicles with standard brakes

326 mm (12.8 in)

Front brake disc diameter - Vehicles with high performance brakes

355 mm (14.0 in)

New front brake disc nominal thickness - Vehicles with standard brakes 30 mm (1.18 in)

New front brake disc nominal thickness - Vehicles with high
performance brakes

32 mm (1.28 in)

Worn brake disc discard thickness - Vehicles with standard brakes

28 mm (1.14 in)

Worn front brake disc discard thickness - Vehicles with high
performance brakes

30 mm (1.18 in)

Rear brake disc diameter

326 mm (12.8 in)

New rear brake disc nominal thickness

20 mm (0.79 in)

Worn rear brake disc minimum thickness

18 mm (0.72 in)

Maximum front brake disc runout (installed) - Vehicles with standard
brakes

0.090 mm ( 0.004
in)

Maximum front brake disc runout (installed) - Vehicles with high
performance brakes

0.090 mm ( 0.004
in)

Maximum rear brake disc runout (installed)

0.075 mm ( 0.003
in)

Maximum front hub face runout (installed)

0.015 mm ( 0.0006
in)

Maximum rear hub face runout (installed)

0.05 mm ( 0.002 in)

Front brake caliper piston diameter

60 mm (2.36 in)

Rear brake caliper piston diameter

45 mm (1.77 in)

Brake Lining and Disc Specifications – Armoured XJ

Item

Specification

Front brake disc diameter

380 mm (14.96 in)

New front brake disc nominal thickness

36 mm (1.42 in)

Worn front brake disc discard thickness

33.6 mm (1.32 in)

Front brake pad discard thickness (including backing plate) 7.7 mm (0.30 in)
Rear brake disc diameter

330 mm (12.99 in)

New rear brake disc nominal thickness

28 mm (1.10 in)

Worn rear brake disc minimum thickness

25.6 mm (1.00)

Rear brake pad discard thickness (including backing plate) 7.7 mm (0.30 in)
Maximum front brake disc runout (installed)

0.090 mm ( 0.004 in)

Maximum rear brake disc runout (installed)

0.075 mm ( 0.003 in)

Maximum front hub face runout (installed)

0.015 mm ( 0.0006 in)

Maximum rear hub face runout (installed)

0.05 mm ( 0.002 in)

Front brake caliper piston diameter



Brake caliper piston 1 and 2



Brake caliper piston 3 and 4



Brake caliper piston 5 and 6



30.2 mm (1.18 in)



34.9 mm (1.37 in)



38.1 mm (1.50 in)

Rear brake caliper piston diameter

31.80 mm (1.25 in)

Published: Mar 24, 2014

www.

General procedures

Brake Disc Runout Check

Check

1. Remove the wheel and tire. For additional information, refer to

<<204-04>>

2. NOTE:

For vehicles with Brembo brakes, detach the parking brake caliper.

Detach the front or rear brake caliper.

3. Install all wheel nuts and tighten equally to 20 Nm.

•

Make sure that the brake disc is fully seated against the hub face.

4. Install a dial test indicator gauge and holding fixture to a suitable mounting point.

5. NOTE:

If the runout is outside specification, check the hub face runout.

Using the dial test indicator, measure the inner and outer faces of the brake disc.
1. Position the gauge so that it contacts the disc 10 mm (0.4 in) from the outer edge.

2. Slowly rotate the hub/disc assembly. Note the reading.

6. If a front hub runout check is required, remove the front brake disc. For additional
information, refer to

<<206-03>>

. If a rear hub runout check is required, remove the rear

brake disc. For additional information, refer to

<<206-04>>

7. NOTE:

The hub surface should be free from dirt and corrosion. Do not use abrasive cloths to
clean hub faces.

Using the dial test indicator, measure the hub face runout.

1. Position the gauge so that it contacts the mounting tube between the stud and the
chamfer.

2. Slowly rotate the hub and note the runout. For additional information, refer to the
specification chart.

•

If the front hub runout exceeds the specifications, install a new hub, brake disc and

recheck. For additional information, refer to