2002 LAND ROVER DISCOVERY steering wheel

CONTENTS
CONTENTS 1
INTRODUCTION ...................................................................................... 01-1
How To Use This Manual................................................................................................................ 01-1
Repairs and Replacements ............................................................................................................. 01-1
Specifications .................................................................................................................................. 01-2
Abbreviations and Symbols ............................................................................................................ 01-3
GENERAL INFORMATION ...................................................................... 03-1
General Precautions ....................................................................................................................... 03-1
Safety Instructions .......................................................................................................................... 03-2
Environmental Precautions ............................................................................................................. 03-3
General Fitting Instructions ............................................................................................................. 03-6
Ball and Roller Bearings ................................................................................................................. 03-7
Oil Seals.......................................................................................................................................... 03-8
Joints and Joint Faces .................................................................................................................... 03-9
Locking Devices .............................................................................................................................. 03-9
Screw Threads ................................................................................................................................ 03-10
Bolt and Nut Identification ............................................................................................................... 03-11
Flexible Pipes and Hoses ............................................................................................................... 03-13
Rolling Road Testing....................................................................................................................... 03-15
Fuel Handling Precautions .............................................................................................................. 03-16
Electrical Precautions ..................................................................................................................... 03-17
Supplementary Restraint System Precautions ............................................................................... 03-18
SRS Component Replacement Policy ............................................................................................ 03-23
Air Conditioning System Precautions .............................................................................................. 03-24
Air Conditioning Compressor Replacement .................................................................................... 03-26
Body Repairs .................................................................................................................................. 03-26
GENERAL DATA ..................................................................................... 04-1
Engine - Td5 ................................................................................................................................... 04-1
Engine - V8 ..................................................................................................................................... 04-4
Fuel system - Td5 ........................................................................................................................... 04-8
Fuel system - V8 ............................................................................................................................. 04-9
Cooling system - Td5 ...................................................................................................................... 04-9
Cooling system - V8 ........................................................................................................................ 04-10
Clutch - Td5 .................................................................................................................................... 04-10
Clutch - V8 ...................................................................................................................................... 04-11
Manual gearbox - R380 .................................................................................................................. 04-12
Transfer box - LT230SE .................................................................................................................. 04-13
Automatic gearbox - ZF4HP22/24 .................................................................................................. 04-13
Rear axle......................................................................................................................................... 04-13
Front axle ........................................................................................................................................ 04-13
Steering........................................................................................................................................... 04-14
Suspension ..................................................................................................................................... 04-15
Brakes ............................................................................................................................................. 04-16
Wheels and tyres ............................................................................................................................ 04-16
Air conditioning ............................................................................................................................... 04-17
Electrical - Td5 ................................................................................................................................ 04-17
Electrical - V8 .................................................................................................................................. 04-17
Dimensions ..................................................................................................................................... 04-18
Weights ........................................................................................................................................... 04-18

CONTENTS
CONTENTS 3
Alarm handset battery ..................................................................................................................... 10-6
Road wheels ................................................................................................................................... 10-7
Tyres .............................................................................................................................................. 10-7
Brake pads, discs and calipers ....................................................................................................... 10-7
Road wheel speed sensors ............................................................................................................. 10-7
Brake fluid ....................................................................................................................................... 10-8
Fuel filter - diesel engine ................................................................................................................. 10-8
Fuel filter sedimenter ...................................................................................................................... 10-8
Road wheels ................................................................................................................................... 10-8
Radiator/Intercooler ........................................................................................................................ 10-8
Ambient air Temperature and pressure sensor .............................................................................. 10-8
Doors, bonnet and fuel filler flap ..................................................................................................... 10-9
Air suspension intake filter .............................................................................................................. 10-9
Anti-freeze....................................................................................................................................... 10-9
Cooling system ............................................................................................................................... 10-9
Spark plugs - V8 engine.................................................................................................................. 10-10
Air cleaner - V8 engine ................................................................................................................... 10-11
Air cleaner and dump valve - diesel engine .................................................................................... 10-11
Auxiliary drive belt ........................................................................................................................... 10-11
Auxiliary drive belt - V8 engine ....................................................................................................... 10-12
Auxiliary drive belt - diesel engine .................................................................................................. 10-12
Fluid reservoirs ............................................................................................................................... 10-12
Steering box .................................................................................................................................... 10-13
Battery ............................................................................................................................................. 10-13
Intercooler - diesel engine............................................................................................................... 10-14
Engine oil - V8 engine ..................................................................................................................... 10-14
Engine oil - diesel engine ................................................................................................................ 10-14
Centrifuge rotor – diesel engine ...................................................................................................... 10-15
Engine oil filter - diesel engine ........................................................................................................ 10-15
Engine oil filter – V8 engine ............................................................................................................ 10-15
Manual gearbox .............................................................................................................................. 10-16
Automatic gearbox ......................................................................................................................... 10-17
Transfer box .................................................................................................................................... 10-18
Front and rear axle .......................................................................................................................... 10-19
Propeller shafts ............................................................................................................................... 10-19
Anti-roll bar links ............................................................................................................................. 10-20
ACE actuators ................................................................................................................................. 10-21
ACE filter ......................................................................................................................................... 10-21
Brake hose, brake, fuel, ACE, clutch pipes and unions/electrical harnesses ................................ 10-22
Engine, gearbox, transfer box and axles ........................................................................................ 10-23
Exhaust system............................................................................................................................... 10-23
Steering box and front suspension ................................................................................................. 10-23
Steering rod ball joints ................................................................................................................... 10-25
Dampers and SLS height sensors .................................................................................................. 10-25
Front and rear axle suspension links .............................................................................................. 10-26
Towing bracket................................................................................................................................ 10-27
Engine mountings - V8 engine ........................................................................................................ 10-27
Road/roller test................................................................................................................................ 10-28
ENGINE - Td5 ........................................................................................... 12-1-1
DESCRIPTION AND OPERATION
Td5 Engine...................................................................................................................................... 12-1-1
Cylinder block components ............................................................................................................. 12-1-2

CONTENTS
14 CONTENTS
Steering system component layout................................................................................................. 57-1
Steering column assembly and intermediate shaft ......................................................................... 57-2
Steering box.................................................................................................................................... 57-4
Description ...................................................................................................................................... 57-5
Operation ........................................................................................................................................ 57-15
ADJUSTMENTS
Steering box - check and adjust ..................................................................................................... 57-17
Hydraulic system - bleed ................................................................................................................ 57-18
Steering linkage - centralise ......................................................................................................... 57-18
Wheel alignment - front ................................................................................................................. 57-19
Power steering pressure check - diesel models ............................................................................. 57-20
Power steering pressure check - V8 LHD models .......................................................................... 57-22
Power steering pressure check - V8 RHD models ......................................................................... 57-24
REPAIRS
Power steering box - V8 ................................................................................................................. 57-27
Power steering box - LHD - diesel .................................................................................................. 57-30
Steering box - RHD - diesel ............................................................................................................ 57-34
Seal - input shaft - steering box ..................................................................................................... 57-37
Seal - output shaft - steering box ................................................................................................... 57-38
Pump - power steering - V8 ............................................................................................................ 57-39
Pump - power steering - diesel ....................................................................................................... 57-41
Steering column assembly and lock ............................................................................................... 57-42
Shaft - intermediate and universal joint - steering column ............................................................ 57-44
Nacelle - steering column ............................................................................................................... 57-47
Drop arm - steering box ................................................................................................................ 57-47
Ball joint - track rod ....................................................................................................................... 57-48
Ball joint - drag link ....................................................................................................................... 57-49
Drag link ........................................................................................................................................ 57-50
Damper - steering ......................................................................................................................... 57-51
Steering wheel ............................................................................................................................... 57-51
FRONT SUSPENSION .............................................................................. 60-1
DESCRIPTION AND OPERATION
Front suspension component layout (ACE torsion bar shown)....................................................... 60-1
Front suspension components (ACE torsion bar shown) ............................................................... 60-2
Description ...................................................................................................................................... 60-4
DESCRIPTION AND OPERATION
ACE system component layout....................................................................................................... 60-9
ACE system control diagram .......................................................................................................... 60-10
Description - ACE ........................................................................................................................... 60-11
Operation ........................................................................................................................................ 60-25
ADJUSTMENTS
ACE hydraulic system bleeding ..................................................................................................... 60-27
Fluid level check - ACE system ...................................................................................................... 60-27
REPAIRS
Bushes - Panhard rod ................................................................................................................... 60-29
Ball joint - upper - steering knuckle ............................................................................................... 60-30
Ball joint - lower - steering knuckle ................................................................................................. 60-31
Steering knuckle ........................................................................................................................... 60-32
Road spring - front ........................................................................................................................ 60-34
Wheel hub....................................................................................................................................... 60-35
Damper - front ............................................................................................................................... 60-37

GENERAL INFORMATION
03-23
Airbag and pretensioner deployment
Deployment procedures and precautions as detailed
in this manual should be strictly adhered to. Only
personnel who have undergone the appropriate
training should undertake deployment of airbag and
pretensioner modules. The following precautions
must be complied with:
lOnly use deployment equipment approved for
the intended purpose.
lBefore beginning deployment procedure,
ensure deployment tool functions properly by
performing the self test procedure detailed in
SRS section of this manual.
lDeployment of airbag/ pretensioner modules
should be performed in a well ventilated area
which has been designated for the purpose.
lEnsure airbag/pretensioner modules are not
damaged or ruptured before attempting to
deploy.
lNotify the relevant authorities of intention to
deploy airbag and pretensioner units.
lWhen deploying airbag pretensioner units,
ensure that all personnel are at least 15 metres
(45 feet) away from the deployment zone.
lEnsure deployment tool is connected correctly,
in compliance with the instructions detailed in
the SRS section of this manual. In particular,
ensure deployment tool is NOT connected to
battery supply before connecting to airbag
module connector.
lWhen deploying seat belt pretensioners, ensure
pretensioner unit is secured correctly to the
seat.
lWhen removing deployed airbag modules and
pretensioner units, wear protective clothing.
Use gloves and seal deployed units in a plastic
bag.
lFollowing deployment of any component of the
SRS system within the vehicle, all SRS
components must be replaced. DO NOT re-use
or salvage any parts of the SRS system.
lDo not lean over airbag module when
connecting deployment equipment.
If a vehicle is to be scrapped, undeployed airbag
modules and pretensioner units must be manually
deployed. In this case airbags can be deployed in the
vehicle; before deployment, ensure the airbag
module is secure within its correct mounting position.
Deployment of the driver's airbag in the vehicle may
damage the steering wheel; if the vehicle is not being
scrapped, deploy the module outside of the vehicle.
WARNING: During deployment parts of the
airbag module become hot enough to burn you.
Wait 30 minutes after deployment before
touching the airbag module.
SRS Component Replacement Policy
The following information details the policy for
replacement of SRS components; either as a result
of a vehicle accident or as a result of vehicle age.
Impacts which do not deploy the airbags or pre-
tensioners
Check for structural damage in the area of the
impact, paying particular attention to bumper
armatures, longitudinals, crash cans and bracketry.
Impacts which deploy the airbags or pre-
tensioners
The replacement and inspection policy is dependent
on the type and severity of of the crash condition.
The following guidelines are the minimum that
should be exercised as a result of the deployment of
specific SRS components.
If the front airbags or seat belt pre-tensioners are
deployed, the following parts must be replaced:
lSRS DCU.
lDriver airbag module
lPassenger airbag module
lFront seat belt buckle pre-tensioners
lRotary coupler
lDriver's seat belt retractor
lFlyleads (where applicable) connecting airbags
and seat belt pre-tensioners to SRS harness
In addition, the following should be inspected for
damage and replaced as necessary:
lFront passenger's seat belt retractor (webbing,
tongue latching, 'D' loop, body anchorage point)
lRear seat belt buckles (webbing, buckle covers,
body anchorage and tongue latching function)
lFascia moulding adjacent to passenger airbag
module
lSteering wheel (if damage is evident)
lFront seat frames and head restraints (if there is
evidence of damage to the seat frame or
cushion pan)
lSteering column (if adjustment is lost or there
are signs of collapse)
lThird row seats, seat belts and head restraints
(where fitted). Check third row seat latching
mechanism operates correctly.
Periodic replacement of SRS components
The performance of the propellants within airbags
and pre-tensioners will deteriorate over a period of
time. As a result, it is essential that the airbags are
replaced after 10 years and seat belt pre-tensioners
are replaced after 15 years in order to maintain
occupant safety.

GENERAL DATA
04-14
Steering
Note: Measurements taken at EEC kerb weight.
Type Hydraulically assisted worm and roller
Steering wheel turns lock to lock 3.5
Steering wheel diameter 400 mm (15.7 in)
Turning circle, kerb to kerb 11.9 metres (39.1 feet)
PAS pump Hobourn Automotive Ltd. Series 500, belt driven
PAS pump pressure - engine at idle with steering at
full lock21 to 62 bar (305 to 900 lbf/in
2
Delivery pressure (nominal) 100 bar (1450 lbf.in2) 8.5 litres/min (15.1 pints/min) (18.1 US pints/
min)
Steering geometry:

Camber angle - Front, up to VIN 2A 754807 -
unladen condition

Camber angle - Front, from VIN 2A 754808 -
unladen condition

Camber angle - Rear - unladen condition–10' ± 30'
+20' ± 30'
–10' ± 30'

Cross camber - Front and rear 1° (Maximum)

Castor angle - unladen condition 3° 45' ± 45'

Cross castor 1° (Maximum)

Toe out - Front

Toe in - Rear– 0° 10' ± 0° 10' (total)
+ 0° 5' ± 0° 15' (total)
Thrust angle 20' (Maximum)

Swivel pin inclination 13° 11'

TORQUE WRENCH SETTINGS
06-10
Steering
TORQUE DESCRIPTION METRIC IMPERIAL
Drag link to drop arm 80 Nm (59 lbf.ft)
Track rod to steering knuckle 125 Nm (92 lbf.ft)
Tension collet to steering knuckle 5 Nm (3.7 lbf.ft)
Steering damper125 Nm (92 lbf.ft)
Steering knuckle to axle yoke upper ball joint 110 Nm (81 lbf.ft)
High pressure pipe union 20 Nm (15 lbf.ft)
Drag link/track rod M8 bolts 22 Nm (16 lbf.ft)
Drag link/track rod M10 bolts 33 Nm (24 lbf.ft)
Steering box90 Nm (66 lbf.ft)
Universal joint to intermediate shaft 25 Nm (18 lbf.ft)
Panhard rod230 Nm (170 lbf.ft)
Steering box output shaft 88 Nm (65 lbf.ft)
Drop arm240 Nm (177 lbf.ft)
Auxiliary housing bolts 40 Nm (30 lbf.ft)
Auxiliary housing nut 10 Nm (7 lbf.ft)
PAS pump - V822 Nm (16 lbf.ft)
PAS pump pipe bracket bolt 22 Nm (16 lbf.ft)
Jockey pulley bolt 50 Nm (37 lbf.ft)
PAS pump adaptor pipe 10 Nm (7 lbf.ft)
PAS pump to coolant pump bolts - Td5 25 Nm (18 lbf.ft)
Steering column to fascia 25 Nm (18 lbf.ft)
Universal joint to steering box 25 Nm (18 lbf.ft)
Ball joint to swivel hub 77 Nm (57 lbf.ft)
PAS pump pulley22 Nm (16 lbf.ft)
Steering wheel nut 43 Nm (32 lbf.ft)

LIFTING AND TOWING
08-1
LIFTING AND TOWING
LIFTING
The following instructions must be carried out before
raising the vehicle off the ground.
lUse a solid level ground surface.
lApply hand brake.
lSelect 'P' (Automatic gearbox) or 1st gear
(Manual gearbox) in main gearbox.
lSelect Low range in transfer gearbox.
To avoid damage occurring to the under body
components of the vehicle the following jacking
procedures must be adhered to.
DO NOT POSITION JACKS OR AXLE STANDS
UNDER THE FOLLOWING COMPONENTS:
lBody structure
lBumpers
lFuel lines
lBrake lines
lFront radius arms
lPanhard rod
lSteering linkage
lRear trailing arms
lFuel tank
lEngine sump
lGearbox bell housing
Vehicle jack
The jack provided with the vehicle is only intended for
use in an emergency, for changing a tyre. DO NOT
use the jack for any other purpose. Refer to Owner's
Handbook for vehicle jack location points and
procedure. Never work under a vehicle supported
solely by the vehicle jack.
Hydraulic jack
A hydraulic jack with a minimum 1500 kg, 3,300 lbs
load capacity must be used. Do not commence
work on the underside of the vehicle until
suitable axle stands have been positioned under
the axle.
WARNING: Always chock the wheels when
jacking. The hand brake acts on the
transmission, not the rear wheels, and may be
ineffective when the wheels are off the ground.Raising and supporting the vehicle
Position cup of hydraulic arm under differential
casing (1).The differential casing is not central to
the axle. Care should be taken when raising the
front road wheels off the ground as the rear axle
has less sway stiffness.
Raise vehicle to enable an axle stand to be installed
under left hand axle tube (2).
Position an axle stand under right hand axle tube (4).
Carefully lower jack until vehicle sits securely on both
axle stands, remove jack.
Alternatively, the axle stands can be positioned
under the chassis longitudinals at the front and/or
rear of the vehicle.
Before commencing work on underside of vehicle re-
check security of vehicle on stands.
WARNING: Always chock the wheels when
jacking. The hand brake acts on the the
transmission, not the rear wheels, and may be
ineffective when the wheels are off the ground.

LIFTING AND TOWING
08-2
Reverse procedure when removing vehicle from
stands.
Hydraulic ramps
Use only a 'drive on' type ramp which supports a
vehicle by it's own road wheels. If a 'wheel free'
condition is required, use a 'drive on' ramp
incorporating a 'wheel free' system that supports
under axle casings. Alternatively, place vehicle on a
firm, flat floor and support on axle stands.
TOWING
Towing
The vehicle has permanent four wheel drive. The
following towing instructions must be adhered
to:
Towing on 4 wheels with driver
Turn ignition key to position '1' to release steering
lock.
Select neutral in main gearbox and transfer gearbox.
Secure tow rope, chain or cable to towing eye.
Release the handbrake.
The brake servo and power assisted steering
system will not be functional without the engine
running. Greater pedal pressure will be required
to apply the brakes, the steering system will
require greater effort to turn the front road
wheels. The vehicle tow connection should be
used only in normal road conditions, 'snatch'
recovery should be avoided.Suspended tow
To prevent vehicle damage, front or rear
propeller shaft MUST BE removed, dependent
upon which axle is being trailed.
Mark propeller shaft drive flanges at transfer box and
axles with identification lines to enable the propeller
shaft to be refitted in its original position.
Remove the propeller shaft fixings, remove the shaft
from the vehicle.
If the front axle is to be trailed turn ignition key to
position '1' to release steering lock.
The steering wheel and/or linkage must be
secured in a straight ahead position. DO NOT use
the steering lock mechanism for this purpose.
Towing eyes
The towing eyes at the front and rear of the vehicle
are designed for vehicle recovery purposes only and
must NOT be used to tow a trailer or caravan.
Front:A single towing eye, set behind a removable
panel in the front spoiler. DO NOT use the front
lashing rings for towing.