bearing JAGUAR XFR 2010 1.G Service Manual

1 Transmission flexible joint 2 Collapsible front driveshaft tube 3 Splined slip joint 4 Center bearing 5 Universal joint 6 Rear driveshaft tube 7 Differential flexible joint

Driveshaft - Driveshaft - Overview
Description and Operation

Driveshaft Overview Published: 11-May-2011

The two-piece driveshaft, manufactured from lightweight tubular steel, transmits drive from the engine, via the transmission,
to the differential. The driveshaft aligns with the centerline of the vehicle’s body and is supported by a center bearing.

Published: 11-May-2011
Driveshaft - Driveshaft - System Operation and Component Description
Description and Operation


Driveshaft System Operation

The two-piece driveshaft, manufactured from lightweight tubular steel, transmits drive from the engine, via the transmission,
to the differential. The driveshaft aligns with the centerline of the vehicle’s body and is supported by a center bearing.

The driveshaft's front tube is of swaged construction, which is a crash energy management feature, designed to collapse
progressively and predictably in the event of a severe frontal impact. A low-friction splined slip-joint at the center of the
driveshaft provide the driveshaft's plunge capability.

Flexible couplings connecting the driveshaft to both the transmission and the differential counteract the angular movement of
the driveshaft caused by the driveline's acceleration and braking forces.

The center universal joint is positioned at a specified angle using shims between the center bearing and the vehicle's body.
The driveline angles have been carefully configured to balance minimum power losses with excellent vibration and wear
characteristics. The universal joint is lubricated during manufacture and sealed for life.
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1 Transmission flexible joint 2 Collapsible front driveshaft tube 3 Splined slip joint 4 Center bearing 5 Universal joint 6 Rear driveshaft tube 7 Differential flexible joint

A motor and reduction gearbox, attached to the cover.
A temperature sensor installed in the cover.

The DLM (differential locking module) operates the motor of the electronic differential under the control of the ADM (adaptive
damping module).
Exploded View of Electronic Differential



Item Description 1 Circlip 2 Bearing assembly 3 Input actuator 4 Actuator balls 5 Output actuator www.JagDocs.com

Thrust race 7 Shim 8 Thrust plate 9 Dished washer 10 Bolt (10 off) 11 Clutch basket 12 Multi-plate clutch and pressure disc 13 Differential case 14 Screw (2 off) 15 Bearing assembly 16 Oil seal 17 Oil slinger inner 18 Oil slinger outer 19 Input flange 20 Pinion nut 21 Collapsible spacer 22 Shim 23 Bearing assembly 24 Pinion shaft 25 Mounting insulator inner (2 off) 26 Mounting insulator rubber (2 off) 27 Mounting insulator outer (2 off) 28 Carrier 29 Oil seal 30 Drain plug 31 Vent 32 Breather cap 33 Shim 34 Bearing assembly 35 Drive gear 36 Shim 37 RH sun gear 38 Circlip 39 Thrust washer (4 off) 40 Planet gear (4 off) 41 Pin (2 off) 42 Shaft 43 LH sun gear 44 Shim 45 Bearing assembly 46 Shim 47 Dowel (2 off) 48 Bolt (4 off) 49 Reduction gear casing 50 Reduction gear 51 Shaft 52 Temperature sensor 53 O-ring seal 54 Motor 55 Screw (4 off) 56 Cover 57 Output actuator locking pin 58 Bolt (9 off)

60 Oil seal The multi-plate clutch is contained in a clutch basket attached to the differential carrier with the crown wheel securing bolts.
Alternate plates of the clutch pack are keyed to the clutch basket and the LH sun gear. A pressure disc is installed on the outer end of the clutch pack and keyed to the clutch basket. A thrust race on the end of the clutch basket incorporates lugs which
extend through the clutch basket onto the pressure disc.

The actuator assembly is mounted on bearings on the outboard end of the clutch basket, against the thrust race. The actuator
assembly consists of input and output actuators separated by five ball bearings. A locking pin in the cover engages with a slot
in the output actuator to prevent it turning, but allow it to move axially. The input actuator engages with the reduction gearbox
and is free to rotate relative to the cover. Ball bearings locate in curved grooves in the mating faces of the input and
output actuators. The bottom surface of each groove incorporates a ramp. Rotation of the input actuator forces the ball
bearings up the ramps in the grooves and induces an axial movement in the output actuator. The thrust race and pressure disc
transfer the axial movement from the output actuator to the clutch pack.



Item Description 1 Actuator 2 Multi-plate clutch 3 Differential The motor is a 12 V dc motor that adjusts the frictional loading of the multi-plate clutch, via the reduction gearbox and the
actuator assembly, under the control of the DLM. Adjusting the frictional loading of the multi-plate clutch adjusts the locking
torque between the crown wheel drive gear and the sun wheel.

Four bolts attach the motor to the reduction gearbox, which is located in position on the cover with two dowels, and secured
with four bolts. An O-ring seals the joint between the motor and the reduction gearbox.

The motor is driven by a 12 V dc feed direct from the DLM. The motor also incorporates the following connections with the
DLM:

A motor temperature sensor, to prevent excessive use from damaging the motor.
Two Hall effect motor position sensors, to enable closed loop control of the motor.

The temperature sensor provides a differential oil temperature signal to the DLM, to prevent excessive use from damaging the
multi-plate clutch.

Differential Locking Module (DLM)

The DLM controls operation of the electronic differential. The DLM is attached to a bracket located on the LH side of the luggage compartment, immediately forward of the fender tail lamp, behind the trim.

Rear Drive Halfshafts - Inner Constant Velocity (CV) Joint Boot
Removal and Installation

Removal Published: 11-May-2011

1. WARNING: Do not work on or under a vehicle supported only by a
jack. Always support the vehicle on safety stands.

Raise and support the vehicle.

2. Remove the rear halfshaft.
For additional information, refer to: Rear Halfshaft - TDV6 3.0L Diesel /V8 5.0L Petrol/V8 S/C 5.0L Petrol (205-05 Rear Drive Halfshafts, Removal and Installation).


3. CAUTION: Use suitable protective covers to protect the halfshaft.
Using a suitable clamp, secure the rear halfshaft.

4. CAUTION: Make sure the inner constant velocity (CV)
joint is not separated from the halfshaft.

Remove and discard the inner CV joint boot retaining clip.













5. CAUTION: Make sure the CV joint ball bearings do not
drop out of the CV joint.

Using a suitable tool, remove the inner CV joint. www.JagDocs.com

3. CAUTIONS:


Only use lubricants meeting the Jaguar specification.


Make sure the CV joint ball bearings do not drop out
of the CV joint.


NOTE: Clean the constant velocity (CV) joint,
removing as much of the old grease as possible.
Install the inner CV joint.
Fill the CV joint with 40 grams of grease.
Fill the CV joint boot with 100 grams of grease.










4. CAUTIONS:


Make sure the CV joint is not separated from the
halfshaft.


Make sure enough air is present in the CV boot.

Install a new retaining clip.









5. Install a new retaining clip.




















6. Remove the rear halfshaft from the clamp.

Rear Drive Halfshafts - Outer Constant Velocity (CV) Joint Boot
Removal and Installation

Removal Published: 11-May-2011

1. WARNING: Do not work on or under a vehicle supported only by a
jack. Always support the vehicle on safety stands.

Raise and support the vehicle.


2.

3. For additional information, refer to: Inner Constant Velocity (CV) Joint Boot (205-05 Rear Drive Halfshafts, Removal and Installation).
4.
5.



















6. CAUTION: Make sure the CV joint ball bearings do not drop out of