2010 JAGUAR XFR brakes

Diagnosis and TestingBrake SystemGeneral ProceduresBrake Disc Runout Check
Brake System Bleeding (70.25.03)
Front Brake Disc Runout Check - With Wheel On - Vehicles With: High Performance Brakes
Rear Brake Disc Runout Check - With Wheel On206-03B: Front Disc Brake - TDV6 3.0L Diesel /V8 5.0L Petrol/V8 S/C 5.0L PetrolSpecificationDescription and OperationComponent Location
Overview
System Operation and Component DescriptionRemoval and InstallationBrake Caliper - Vehicles With: High Performance Brakes
Brake Disc - Vehicles With: High Performance Brakes
Brake Pads - Vehicles With: High Performance Brakes
Brake Disc Shield (70.10.18) - Vehicles With: High Performance Brakes206-04B: Rear Disc Brake - TDV6 3.0L Diesel /V8 5.0L Petrol/V8 S/C 5.0L PetrolSpecificationDescription and OperationComponent Location
Overview
System Operation and Component DescriptionRemoval and InstallationBrake Caliper - Vehicles With: High Performance Brakes
Brake Disc - Vehicles With: High Performance Brakes
Brake Pads - Vehicles With: High Performance Brakes
Brake Disc Shield (70.10.19)206-05: Parking Brake and ActuationSpecificationDescription and OperationComponent Location
Overview
System Operation and Component DescriptionDiagnosis and TestingParking BrakeGeneral ProceduresParking Brake Cable Tension ReleaseRemoval and InstallationParking Brake Cable LH - TDV6 3.0L Diesel /V8 5.0L Petrol/V8 S/C 5.0L Petrol
Parking Brake Cable RH - TDV6 3.0L Diesel /V8 5.0L Petrol/V8 S/C 5.0L Petrol

General Information - Road/Roller Testing
Description and Operation Published: 11-May-2011

Road or roller testing may be carried out for various reasons and a procedure detailing pre-test checks, through engine starting
and stopping, pre-driving checks, on-test checks to final checks on completion of the test is given in this section.

Unless complete vehicle performance is being checked, the full road test procedure need not be carried out. Instead, those
items particularly relevant to the system/s being checked can be extracted.

Pre - Test Checks


WARNING: If the brake system hydraulic fluid level is low, pedal travel is excessive or a hydraulic leak is found, do not
attempt to road test the vehicle until the reason for the low fluid level, excessive pedal travel or hydraulic leak is found and
rectified.

It is suggested that pre-test checks, and functional tests of those systems/circuits which affect the safe and legal operations
of the vehicle, such as brakes, lights and steering, should always be carried out before the road or roller test.

Engine oil level
Engine coolant level
Tires, for correct pressure, compatible types and tread patterns, and wear within limits
There is sufficient fuel in the tank to complete the test
All around the engine, transmission and under the vehicle for oil, coolant, hydraulic and fuel leaks. Make a note of any
apparent leaks and wipe off the surrounding areas to make it easier to identify the extent of the leak on completion of
the test
Starting the Engine


CAUTION: On initial drive away from cold and within the first 1.5 km (1 mile), do not depress accelerator pedal beyond
half travel until the vehicle has attained a minimum speed of 25 km/h (15 miles/h). Never operate at high engine speed or
with the accelerator pedal at full travel whilst the engine is cold.
With the ignition switched off, check:
The parking brake is applied
The transmission selector lever is in Park
All instrument gauges (except fuel gauge) read zero

With the ignition switched on, check:

Ignition controlled warning lamps come on
Engine coolant temperature gauge registers a reading compatible with the engine coolant temperature
Fuel gauge registers a reading appropriate to the fuel level in the tank
The operation of the parking brake and brake fluid level warning lamps

On Road or Roller Test Check:


CAUTION: If road testing, check the brake operation while still travelling at low speed before continuing with the test. If
the brakes pull to one side, or appear to be otherwise faulty, do not continue with the road test until the fault has been found
and rectified.
Initial gear engagement is smooth
Parking brake control operates smoothly and the parking brake releases quickly and completely
Transmission takes up the drive smoothly, without judder
The engine power output is satisfactory, full power is achieved, acceleration is smooth and pedal operation not stiff or
heavy, and engine speed returns to idle correctly
There is no excessive or abnormally colored smoke from the engine under normal driving, heavy load or overrun
conditions
Steering operation, including power steering, is smooth, accurate, not excessively heavy or with excessive free play or
vibration. Does not pull to one side and self centres smoothly after cornering
Speedometer, oil pressure warning lamp, coolant temperature gauge and tachometer register the correct readings or
operate correctly
Switches and controls operate smoothly and positively, warning lamps operate correctly and the direction indicator
control self cancels when the steering is returned to the straight ahead position
Heating and ventilation systems work correctly and effectively
Brake operation and efficiency

Brake Testing


WARNING: When brake testing, avoid breathing the smoke or fumes from hot brakes, this may contain asbestos dust
which is hazardous to health, see Health and Safety Precautions.

Avoid brake testing on busy roads where it can cause inconvenience or danger to other road users.


CAUTION: Brake testing which includes heavy brake applications should not be carried out with new brake pads/discs or
linings/drums until the components have bedded-in. New brake friction components will not reach full efficiency until the
bedding-in process is complete.

Test the brakes at several speeds within the normal operating range using both light and heavy pedal pressure. Note any
tendency to snatch, pull or drag, and any undue delay in application or release.
Allow the vehicle to coast and note any tendency to pull to one side, or evidence that the brakes are binding.

After stopping the vehicle (not immediately after a period of heavy braking), carefully check the brake temperature. A disc
which feels hot, or appreciably hotter than the others, indicates that the brake is binding.
After completion of the test, check for:
Oil, coolant, hydraulic, air and fuel leaks
Abnormal temperature of any moving components or assemblies, e.g. wheel hubs, transmission, axle etc., which might
indicate over tightness or lack of lubrication

Rear Suspended Tow


When the vehicle is being recovered by rear suspended tow:

The ignition key must be removed from the ignition switch to lock the steering.
The rear wheels must be correctly positioned in the lifting cradle and securely tied down.
Emergency Towing


WARNING: If the engine is not running, the steering will become heavy and the force necessary to effectively apply the
brakes will be greatly increased.


CAUTION: A vehicle with a defective transmission must be towed by rear suspended tow.
When the vehicle is being towed on its own wheels:

Local regulations for the towing of vehicles must be followed. In some countries the registration number of the towing
vehicle and an 'On Tow' sign or warning triangle must be displayed at the rear of the towed vehicle.
The gear selector lever must be in Neutral.
The ignition switch must be in position II to release the steering lock and make the direction indicators, horn and stop
lamps operate.
A distance of 0,8 km (0.5 mile) must not be exceeded.
A speed of 48 km/h (30 mph) must not be exceeded.
The tow rope must be attached to the front towing eye. www.JagDocs.com

it may turn out to be the most important.

2. Do not touch anything until a road test and a thorough visual inspection of the vehicle have been carried out. Leave the
tire pressures and vehicle load just where they were when the condition was first observed. Adjusting tire pressures,
vehicle load or making other adjustments may reduce the conditions intensity to a point where it cannot be identified
clearly. It may also inject something new into the system, preventing correct diagnosis.

3. Make a visual inspection as part of the preliminary diagnosis routine, writing down anything that does not look right.
Note tire pressures, but do not adjust them yet. Note leaking fluids, loose nuts and bolts, or bright spots where
components may be rubbing against each other. Check the luggage compartment for unusual loads.
4. Road test the vehicle and define the condition by reproducing it several times during the road test.

5. Carry out the Road Test Quick Checks as soon as the condition is reproduced. This will identify the correct diagnostic
procedure. Carry out the Road Test Quick Checks more than once to verify they are providing a valid result. Remember,
the Road Test Quick Checks may not tell where the concern is, but they will tell where it is not.

Road Test Quick Checks

1. 24-80 km/h (15-50 miles/h): With light acceleration, a moaning noise is heard and possibly a vibration is felt in the
front floor pan. It is usually worse at a particular engine speed and at a particular throttle setting during acceleration at
that speed. It may also produce a moaning sound, depending on what component is causing it. Refer to Tip-In Moan in
the Symptom Chart.

2. Acceleration/deceleration: With slow acceleration and deceleration, a shake is sometimes noticed in the steering
wheel/column, seats, front floor pan, front door trim panel or front end sheet metal. It is a low frequency vibration
(around 9-15 cycles per second). It may or may not be increased by applying brakes lightly. Refer to Idle Boom/Shake
/Vibration in the Symptom Chart.

3. High speed: A vibration is felt in the front floor pan or seats with no visible shake, but with an accompanying sound or
rumble, buzz, hum, drone or booming noise. Coast with the clutch pedal depressed or shift control selector lever in
neutral and engine idling. If vibration is still evident, it may be related to wheels, tires, front brake discs, wheel hubs
or front wheel bearings. Refer to High Speed Shake in the Symptom Chart.

4. Engine rpm sensitive: A vibration is felt whenever the engine reaches a particular rpm. It will disappear in neutral
coasts. The vibration can be duplicated by operating the engine at the problem rpm while the vehicle is stationary. It
can be caused by any component, from the accessory drive belt to the torque converter which turns at engine speed
when the vehicle is stopped. Refer to High Speed Shake in the Symptom Chart.

5. Noise/vibration while turning: Clicking, popping, or grinding noises may be due to a worn, damaged, or incorrectly
installed front wheel bearing, rear drive half shaft or CV joint.

6. Noise/vibration that is road speed relative: This noise/vibration can be diagnosed independent of engine speed or gear
selected (engine speed varies but torque and road speed remain constant). The cause may be a rear drive
axle/differential whine.
Road Conditions

An experienced technician will always establish a route that will be used for all NVH diagnosis road tests. The road selected
should be reasonably smooth, level and free of undulations (unless a particular condition needs to be identified). A smooth
asphalt road that allows driving over a range of speeds is best. Gravel or bumpy roads are unsuitable because of the additional
road noise produced. Once the route is established and consistently used, the road noise variable is eliminated from the test
results.


NOTE: Some concerns may be apparent only on smooth asphalt roads.

If a customer complains of a noise or vibration on a particular road and only on a particular road, the source of the concern
may be the road surface. If possible, try to test the vehicle on the same type of road.

Vehicle Preparation

Carry out a thorough visual inspection of the vehicle before carrying out the road test. Note anything which is unusual. Do not
repair or adjust any condition until the road test is carried out, unless the vehicle is inoperative or the condition could pose a
hazard to the technician.
After verifying the condition has been corrected, make sure all components removed have been installed.

Lift Test

After a road test, it is sometimes useful to do a similar test on a lift.

When carrying out the high-speed shake diagnosis or engine accessory vibration diagnosis on a lift, observe the following
precautions:


WARNING: If only one drive wheel is allowed to rotate, speed must be limited to 55 km/h (35 miles/h) indicated on the
speedometer since actual wheel speed will be twice that indicated on the speedometer. Speed exceeding 55 km/h (35 miles/h)
or allowing the drive wheel to hang unsupported could result in tire disintegration, differential failure, constant velocity joint

Front Suspension (204-01 Front Suspension, Description and Operation), Front Suspension (204-01 Front Suspension, Description and Operation), Rear Suspension (204-02 Rear Suspension, Description and Operation), Rear Suspension (204-02 Rear Suspension, Description and Operation), Rear Suspension (204-02 Rear Suspension, Description and Operation).
Inspection and Verification

1. Verify the customer concern by carrying out a road test on a smooth road. If any vibrations are apparent, refer to
section 100-04 Noise, Vibration and Harshness.
2. Visually inspect for obvious signs of damage and system integrity.



3. If an obvious cause for an observed or reported condition is found, correct the cause (if possible) before proceeding to
the next step.
4. If the fault is not visually evident, verify the symptom and refer to the following Symptom Chart.

Symptom Chart

Symptom Possible Sources Action Crabbing * Incorrect rear thrust angle. * Check the rear toe adjustment.
REFER to: Rear Toe Adjustment (204-00 Suspension System - General Information, General Procedures). * Front or rear suspension components.
* Inspect the front and rear suspension systems. Repair or
install new suspension components as necessary. * Drive axle damaged. * Install a new rear drive axle/differential.
REFER to: Axle Assembly - V6 3.0L Petrol (205-02 Rear Drive Axle/Differential, Removal and Installation). Drift/Pull * Unequal tire pressure.
* Check and adjust the tire pressures. Inspect the tire for
excessive wear.
REFER to: Specifications (204-04 Wheels and Tires, Specifications). * Incorrect wheel alignment.
* Check and adjust the wheel alignment. REFER to:
(204-00 Suspension System - General Information)
Front Toe Adjustment (General Procedures), Rear Toe Adjustment (General Procedures), Camber and Caster Adjustment (General Procedures). * Tires.
* Check and adjust the tire pressures. Inspect the tire for
excessive wear.
REFER to: Specifications (204-04 Wheels and Tires, Specifications). * Unevenly loaded or overloaded vehicle. * Notify the customer of incorrect vehicle loading. * Damaged steering components. * Check the steering system. * Brake drag. * Check the brakes.
REFER to: Brake System (206-00 Brake System - General Information, Diagnosis and Testing). Mechanical

Damaged tires
Wheel bearing(s)
Loose or damaged front or rear suspension components
Loose, damaged or missing suspension fastener(s)
Incorrect spring usage
Damaged or sagging spring(s)
Damaged or leaking shock absorber(s)
Damaged or leaking strut(s)
Worn or damaged suspension bushing(s)
Loose, worn or damaged steering system components
Damaged axle components Visual Inspection Chart

Published: 14-Feb-2012
Suspension System - General Information - Front Wheel Bearing and Wheel Hub Runout Check Vehicles With: High Performance Brakes
General Procedures

NOTES:


Some variation in the illustrations may occur, but the essential information is always correct.


RH illustration shown, LH similar.
1. WARNING: Make sure to support the vehicle with axle stands.
Raise the front of the vehicle.
2. Remove the front wheel.
For additional information, refer to: Wheel and Tire (204-04 Wheels and Tires, Removal and Installation).

3. Remove the 2 brake caliper support bolts.
Push the brake caliper pistons back to release the pads from the disc. Detach the brake caliper and position to one side with suitable tie strap.















4. Remove the disc.
Remove the 2 clips.









5. Mount special tool 100-053 on the lower caliper support bracket as shown.
A
spacer washer may be required under the tool.
Use the brake caliper support bolt and suitable nut. 6. Position
the Dial Test Indicator (DTI) gauge probe on the hub flange as shown.
7. Zero DTI and rotate the hub one complete revolution to measure hub runout. hub runout must not exceed 0.015 mm.
8. If the hub runout exceeds the limit, install a new hub and bearing.For additional information, refer to:

Symptom Possible Cause Action rear drive halfshaft
Wheel bearings, brakes or
suspension components Vibration at highway speeds
Out-of-balance wheel(s) or tire(s)
Driveline out of
balance/misalignment
Driveshaft center bearing touching
body mounting point
Balance and install new wheel(s) and tire(s)
as required
REFER to: Wheel and Tire (204-04 Wheels and Tires, Removal and Installation).
For additional information,
REFER to: Driveline Angle Inspection (205-00 Driveline System - General Information,
General Procedures).
Refer to the Manufacturer approved
diagnostic system for driveshaft balancing
application
Check for correct spacer washer thickness.
Inspect and install new washers as required Shudder, Vibration During
Acceleration
Powertrain/driveline misalignment
High constant velocity (CV) joint
operating angles caused by
incorrect ride height
Check for misalignment. Install new
components as required. For driveshaft
alignment,
REFER to: Driveline Angle Inspection (205-00 Driveline System - General Information,
General Procedures).
Check the ride height and verify the correct
spring rate. Install new components as
required Lubricant Leak
Rear drive axle breather
Damaged seal
Rear drive axle filler plug
Rear drive axle rear cover joint
Check oil level and correct as required
Install new components as required Pinpoint Tests

PINPOINT TEST A : EXCESSIVE DRIVELINE NOISE TEST
CONDITIONS DETAILS/RESULTS/ACTIONS A1: CHECK NOISE FROM VEHICLE ON ROAD TEST 1 Road test vehicle to determine load and speed conditions when noise occurs. 2 Assess the noise with different gears selected. Does the noise occur in different gears at the same vehicle speed? Yes
Install a new rear drive axle/differential assembly.
REFER to: Axle Assembly - V6 3.0L Petrol (205-02 Rear Drive Axle/Differential, Removal and Installation).
Re-test the system for normal operation.
No
Suspect the engine or transmission. For additional information, REFER to:
Engine - 3.0L/4.2L (303-00 Engine System - General Information, Diagnosis and Testing), Engine - 2.7L Diesel (303-00 Engine System - General Information, Diagnosis and Testing), Diagnostic Strategy (307-01A Automatic Transmission/Transaxle - V6 3.0L Petrol, Diagnosis and Testing).