fuel type LAND ROVER DISCOVERY 2002 Workshop Manual

GENERAL INFORMATION
03-3
Environmental Precautions
General
This section provides general information which can
help to reduce the environmental impacts from the
activities carried out in workshops.
Emissions to air
Many of the activities that are carried out in
workshops emit gases and fumes which contribute to
global warming, depletion of the ozone layer and/or
the formation of photochemical smog at ground
level. By considering how the workshop activities are
carried out, these gases and fumes can be
minimised, thus reducing the impact on the
environment.
Exhaust fumes
Running car engines is an essential part of workshop
activities and exhaust fumes need to be ventilated to
atmosphere. However, the amount of time engines
are running and the position of the vehicle should be
carefully considered at all times, to reduce the
release of poisonous gases and minimise the
inconvenience to people living nearby.
Solvents
Some of the cleaning agents used are solvent based
and will evaporate to atmosphere if used carelessly,
or if cans are left unsealed. All solvent containers
should be firmly closed when not needed and
solvent should be used sparingly. Suitable
alternative materials may be available to replace
some of the commonly used solvents. Similarly,
many paints are solvent based and the spray should
be minimised to reduce solvent emissions.
Refrigerant
It is illegal to release any refrigerants into the
atmosphere. Discharge and replacement of these
materials from air conditioning units should only be
carried out using the correct equipment.
Checklist
Always adhere to the following.
Engines:
ldon't leave engines running unnecessarily;
lminimise testing times and check where the
exhaust fumes are being blown.
Materials:
lkeep lids on containers of solvents;
lonly use the minimum quantity;
lconsider alternative materials;
lminimise over-spray when painting. Gases:
luse the correct equipment for collecting
refrigerants;
ldon't burn rubbish on site.
Discharges to water
Most sites will have two systems for discharging
water: storm drains and foul drains. Storm drains
should only receive clean water, foul drains will take
dirty water.
The foul drain will accept many of the normal waste
waters such as washing water, detergents and
domestic type wastes, but oil, petrol, solvent, acids,
hydraulic oil, antifreeze and other such substances
should never be poured down the drain. If in any
doubt speak to the Water Company first.
Every precaution must be taken to prevent spillage of
oil, fuel, solvents etc. reaching the drains. All
handling of such materials must take place well away
from the drains and preferably in an area with a kerb
or wall around it, to prevent discharge into the drain.
If a spillage occurs it should be soaked up
immediately. Having a spill kit available will make
this easier.
Additional precautions
Check whether the surface water drains are
connected to an oil water separator, this could
reduce the pollution if an incident was to occur. Oil
water separators do need regular maintenance to
ensure effectiveness.
Checklist
Always adhere to the following.
Disposal:
lnever pour anything down a drain without first
checking that it is environmentally safe to do so,
and that it does not contravene any local
regulations or bye-laws;
l have oil traps emptied regularly.
Spillage prevention:
lstore liquids in a walled area;
lmake sure that taps on liquid containers are
secure and cannot be accidentally turned on;
lprotect bulk storage tanks from vandalism by
locking the valves;
ltransfer liquids from one container to another in
an area away from open drains;
lensure lids are replaced securely on containers;
lhave spill kits available near to points of storage
and handling of liquids.

GENERAL INFORMATION
03-5
Electricity and heating:
lkeep doors and windows closed in the winter;
lswitch off machinery or lights when not needed;
luse energy efficient heating systems;
lswitch off computers and photocopiers when
not needed.
Fuel:
ldon't run engines unnecessarily;
lthink about whether journeys are necessary and
drive to conserve fuel.
Water:
ldon't leave taps and hose pipes running;
lmend leaks quickly, don't be wasteful.
Compressed air:
ldon't leave valves open;
lmend leaks quickly;
ldon't leave the compressor running when not
needed.
Use of environmentally damaging materials:
lcheck whether a less toxic material is available.
Handling and storage of materials:
lhave the correct facilities available for handling
liquids to prevent spillage and wastage as listed
above;
lprovide suitable locations for storage to prevent
frost damage or other deterioration.
Waste Management
One of the major ways that pollution can be reduced
is by the careful handling, storage and disposal of all
waste materials that occur on sites. Legislation
makes it illegal to dispose of waste materials other
than to licensed waste carriers and disposal sites.
This means that it is necessary to not only know what
the waste materials are, but also to have the
necessary documentation and licenses.
Handling and storage of waste
Ensure that waste materials are not poured down the
drain or onto soils. They should be stored in such a
way as to prevent the escape of the material to land,
water or air.
They must also be segregated into different types of
waste e.g. oil, metals, batteries, used vehicle
components. This will prevent any reaction between
different materials and assist in disposal.
Disposal of waste
Disposal of waste materials must only be to waste
carriers who are licensed to carry those particular
waste materials and all the necessary
documentation must be completed. The waste
carrier is responsible for ensuring that the waste is
taken to the correct disposal sites.Dispose of waste in accordance with the following
guidelines.
lFuel, hydraulic fluid, anti-freeze and oil: keep
separate and dispose of to specialist contractor.
lRefrigerant: collect in specialist equipment and
reuse.
lDetergents: safe to pour down the foul drain if
diluted.
lPaint, thinners: keep separate and dispose of
to specialist contractor.
lComponents: send back to supplier for
refurbishment, or disassemble and reuse any
suitable parts. Dispose of the remainder in
ordinary waste.
lSmall parts: reuse any suitable parts, dispose
of the remainder in ordinary waste.
lMetals: can be sold if kept separate from
general waste.
lTyres: keep separate and dispose of to
specialist contractor.
lPackaging: compact as much as possible and
dispose of in ordinary waste.
lAsbestos-containing: keep separate and
dispose of to specialist contractor.
lOily and fuel wastes (e.g. rags, used spill kit
material): keep separate and dispose of to
specialist contractor.
lAir filters: keep separate and dispose of to
specialist contractor.
lRubber/plastics: dispose of in ordinary waste.
lHoses: dispose of in ordinary waste.
lBatteries: keep separate and dispose of to
specialist contractor.
lAirbags - explosives: keep separate and
dispose of to specialist contractor.
lElectrical components: send back to supplier
for refurbishment, or disassemble and reuse
any suitable parts. Dispose of the remainder in
ordinary waste.
lElectronic components: send back to supplier
for refurbishment, or disassemble and reuse
any suitable parts. Dispose of the remainder in
ordinary waste.
lCatalysts: can be sold if kept separate from
general waste
lUsed spill-absorbing material: keep separate
and dispose of to specialist contractor.
lOffice waste: recycle paper and toner and ink
cartridges, dispose of the remainder in ordinary
waste.

GENERAL INFORMATION
03-6
General Fitting Instructions
Component removal
Whenever possible, clean components and
surrounding area before removal.
lBlank off openings exposed by component
removal.
lImmediately seal fuel, oil or hydraulic lines when
apertures are exposed; use plastic caps or
plugs to prevent loss of fluid and ingress of dirt.
lClose the open ends of oilways exposed by
component removal with tapered hardwood
plugs or conspicuous plastic plugs.
lImmediately a component is removed, place it in
a suitable container; use a separate container
for each component and its associated parts.
lClean bench and provide marking materials,
labels and containers before dismantling a
component.
Dismantling
Observe scrupulous cleanliness when dismantling
components, particularly when brake, fuel or
hydraulic system parts are being worked on. A
particle of dirt or a cloth fragment could cause a
serious malfunction if trapped in these systems.
lBlow out all tapped holes, crevices, oilways and
fluid passages with an air line. Ensure that any
'O' rings used for sealing are correctly replaced
or renewed, if disturbed during the process.
lUse marking ink to identify mating parts and
ensure correct reassembly. Do not use a centre
punch or scriber to mark parts, they could
initiate cracks or distortion in marked
components.
lWire together mating parts where necessary to
prevent accidental interchange (e.g. roller
bearing components).
lWire labels on to all parts which are to be
renewed, and to parts requiring further
inspection before being passed for reassembly;
place these parts in separate containers from
those containing parts for rebuild.
lDo not discard a part due for renewal until after
comparing it with a new part, to ensure that its
correct replacement has been obtained.Cleaning components
Always use the recommended cleaning agent or
equivalent. Ensure that adequate ventilation is
provided when volatile degreasing agents are being
used. Do not use degreasing equipment for
components containing items which could be
damaged by the use of this process.
General inspection
All components should be inspected for wear or
damage before being reassembled.
lNever inspect a component for wear or
dimensional check unless it is absolutely clean;
a slight smear of grease can conceal an
incipient failure.
lWhen a component is to be checked
dimensionally against recommended values,
use the appropriate measuring equipment
(surface plates, micrometers, dial gauges etc.).
Ensure the measuring equipment is calibrated
and in good serviceable condition.
lReject a component if its dimensions are
outside the specified tolerances, or if it appears
to be damaged.
lA part may be refitted if its critical dimension is
exactly to its tolerance limit and it appears to be
in satisfactory condition. Use 'Plastigauge' 12
Type PG-1 for checking bearing surface
clearances.

GENERAL DATA
04-4
Engine - V8
General
Cylinder arrangement 90° V8, numbered from the front of the engine:

Left bank cylinders 1, 3, 5 and 7

Right bank cylinders 2, 4, 6 and 8
Bore 94.00 mm (3.70 in)
Stroke:

4.0 litre

4.6 litre71.04 mm (2.80 in)
81.92 mm (3.22 in)
Capacity:

4.0 litre

4.6 litre3950 cm
3 (241 in3)
4554 cm3 (278 in3)
Firing order 1 - 8 - 4 - 3 - 6 - 5 - 7 - 2
Compression ratio:

Low - 4.0 litre 8.23:1

High - 4.0 and 4.6 litre 9.35:1
Direction of rotation Clockwise viewed from the front of the engine
Maximum power - 4.0 litre:

Low compression ratio 132 kW (177 bhp) at 4750 rev/min

High compression ratio - UK/Japan/ROW 136 kW (182 bhp) at 4750 rev/min

High compression ratio - NAS 140 kW (187 bhp) at 4750 rev/min
Maximum power - 4.6 litre 162 kW (217 bhp) at 4750 rev/min
Maximum engine speed:

Continuous5000 rev/min

Intermittent 5250 rev/min
Weight (fully dressed, wet)

Manual 194 Kg (435 lb)

Automatic 179 Kg (402 lb)
Dimensions:

Length - Manual 767 mm (30.2 in) (Including fan)

Length - Automatic 777 mm (30.5 in) (Including fan and drive plate)

Width 652 mm (25.7 in)

Height 746 mm (29.4 in)
Spark plugs:

Make/Type - 4.0 litre Champion RC11 PYP B4

Make/type - 4.6 litre Champion RN11 YCC

Gap - 4.0 and 4.6 litre 1.00 ± 0.05 mm (0.040 ± 0.002 in) Non-adjustable
Coils:

Make Bosch 0221 503 407

Type Twin coils
Fuel injection system:

Make Bosch Motronic 5.2.1 Type 4146

Type Multiport fuel injection, electronically controlled with electro-
mechanical injectors

GENERAL DATA
04-5
Idle speed:

All loads off 660 ± 50 rev/min

Base idle speed Non-adjustable

Idle air control (IAC) valve position Checked via TestBook
CO at idle:

Catalyst vehicles 0.5 %

Non-catalyst vehicles 0.5 - 1.0 %
Valve timing
Inlet valves:

Opens 28° BTDC

Closes 77° ABDC
Exhaust valves:

Opens 66° BBDC

Closes 39° ATDC
Fuel grade:

High compression catalyst vehicles 95 RON minimum unleaded

Low compression catalyst vehicles 91 RON minimum unleaded

Non-catalyst vehicles 97 RON leaded
Lubrication
Type Wet sump, pressure fed
Pump type Crankshaft driven eccentric rotor
Oil filter Disposable canister with full flow by-pass
Pressure at idle - minimum 0.7 bar (10 lbf.in
2)
Pressure at 2000 rev/min (hot) 3.4 bar (50 lbf.in
2)
Relief valve opening pressure 3.4 bar (50 lbf.in
2)
Low oil pressure switch opening pressure 0.24-0.41 bar (3.5-6.0 lbf.in
2)
Crankshaft
Main journal diameter 63.487 - 63.500 mm (2.4995 - 2.520 in)
Crankpin journal diameter 55.500 - 55.513 mm (2.20 - 2.22 in)
End float 0.08 - 0.26 mm (0.003 - 0.010 in)
Maximum ovality 0.040 mm (0.002 in)
Main bearings
Quantity 5
Material Glacier Vandervell / AS 15
Diametrical clearance 0.015 - 0.016 mm (0.00059 - 0.00063 in)
Connecting Rods
Type Horizontally split big-end, plain small end
Distance between centres 155.120 - 155.220 mm (6.1071 - 6.1110 in)

GENERAL DATA
04-8
Fuel system - Td5
Type Direct injection from pressure regulated supply with cooled return
flow and in-line pressure regulator
Pressure regulator setting 4 bar (58 lbf.in
2)
Pump Electric two stage submersible
Pump output:

Low pressure 30 l/h (6.6 gal/h) (7.93 US gal/h) at 0.5 bar (7.25 lbf.in
2)

High pressure 180 l/h (39.6 gal/h) (47.55 US gal/h) at 4 bar (58 lbf.in
2)
Maximum consumption 30 l/h (6.6 gal/h) (7.93 US gal/h)
Injectors Electronic unit injectors
Injector nominal operating pressure:

Pre EU3 models 1500 bar (21750 lbf.in
2)

EU3 models 1750 bar (25500 lbf.in
2)
Filter In-line canister filter/water separator with water detection
Air cleaner Mann and Hummell P0037

GENERAL DATA
04-9
Fuel system - V8
Cooling system - Td5
Type Multiport injection from pressure regulated, returnless supply
Pump Electric submersible
Regulated pump output pressure 3.5 bar (50.75 lbf.in
2)
Fuel pump delivery 120 litres/hr (211 pints/hr) (234 US pints/hr)
Filter In-line canister
Air filter Mann and Hummell P0036
Type Pressurised, spill return partial flow, thermostatically controlled
Cooling fans 11 blade axial flow on viscous coupling and 11 blade axial flow
electric
Electric cooling fan switching points:
For A/C system:

On When vehicle speed is 50 mph (80 km/h) or less and ambient
temperature is 28 °C (82 °F) or more

Off When vehicle speed increases to 62.5 mph (100 km/h) or ambient
temperature decreases to 25 °C (77 °F)
For engine cooling during normal running:

On 110 °C (230 °F)

Off 105 °C (221 °F)
For engine cooling at ignition off (to counteract heat
soak):

On If, within 10 seconds of ignition off, engine coolant temperature is
105 °C (221 °F) or more

Off After 10 minutes or if engine coolant temperature decreases to
100 °C (212 °F)
Coolant pump Centrifugal impeller, belt driven from crankshaft
Thermostat Waxstat with pressure relief valve
Thermostat opening temperature:

Initial opening 82 °C (179 °F)

Fully open 96 °C (204 °F)
Expansion tank cap relief valve - system operating
pressure1.4 bar (20.3 lbf.in
2)
Fuel cooler thermostat opening temperature 82°C (179°F)

ENGINE - TD5
DESCRIPTION AND OPERATION 12-1-21
Crankshaft
1Front end to crankshaft sprocket
2Oil supply cross-drillings
3Main journals
4Big-end journals
5Rear end to flywheel
The crankshaft is constructed from cast iron and is surface-hardened. The areas between the crankshaft journals and
the adjoining webs and balance weights are compressed using the cold roll process to form journal fillets.
Cross-drillings in the crankshaft between adjoining main and big-end bearings are used to divert lubrication oil to the
big-end bearings.
A torsional vibration damper is attached to the crankshaft pulley by three bolts.
The crankshaft is carried in six main bearings, with end-float being controlled by thrust washers positioned on both
sides of No. 3 main bearing.
Main bearings
There are six main bearings used to carry the crankshaft. Each of the bearing caps are of cast iron construction and
are attached to the cylinder block by two bolts.
The bearing shells are of the split cylindrical type. The upper half bearing shells are grooved to facilitate the supply of
lubrication oil to the bearings and fit into a recess in the underside of the cylinder block. The lower half bearing shells
are smooth and fit into the bearing caps.
Steel-backed thrust washers are included at each side of No. 3 main bearing to control crankshaft end-float. One side
of each of the thrust washers is grooved, the grooved side of each of the thrust washers is fitted facing outward from
No. 3 main bearing.
Cylinder head components
The cylinder head components are described below:
Cylinder head
The cylinder head is of aluminium construction. It is not possible to reface the cylinder head if it becomes worn or
damaged. An alloy camshaft carrier is bolted directly to the upper surface of the cylinder head. Two dowels are
included in the cylinder head upper face for correct location of the camshaft carrier.
The EU3 cylinder head has a single internal fuel rail for delivering fuel to the injectors and an external fuel pipe for
returning spill fuel back to the fuel connector block. Therefore, pre EU3 and EU3 model cylinder heads are not
interchangeable.
CAUTION: The cylinder head incorporates drillings for the fuel injection system, any contamination which
enters these drillings could cause engine running problems or injector failure. It is therefore, essential that
absolute cleanliness is maintained when carrying out work on the cylinder head.

EMISSION CONTROL - TD5
17-1-4 DESCRIPTION AND OPERATION
Emission Control Systems
Engine design has evolved in order to minimise the emission of harmful by-products. Emission control systems fitted
to Land Rover vehicles are designed to maintain the emission levels within the legal limits pertaining for the specified
market.
Despite the utilisation of specialised emission control equipment, it is still necessary to ensure that the engine is
correctly maintained and is in good mechanical order, so that it operates at its optimum condition.
In addition to emissions improvements through engine design and the application of electronic engine management
systems, special emission control systems are used to limit the pollutant levels developed under certain conditions.
Two main types of additional emission control system are utilised with the Td5 engine to reduce the levels of harmful
emissions released into the atmosphere. These are as follows:
1Crankcase emission control – also known as blow-by gas emissions from the engine crankcase.
2Exhaust gas recirculation – to reduce NO
2 emissions.
Crankcase emission control
All internal combustion engines generate oil vapour and smoke in the crankcase as a result of high crankcase
temperatures and piston ring and valve stem blow-by, a closed crankcase ventilation system is used to vent
crankcase gases back to the air induction system and so reduce the emission of hydrocarbons.
Gases from the crankcase are drawn into the inlet manifold to be burnt in the combustion chambers with the fresh air/
fuel mixture. The system provides effective emission control under all engine operating conditions.
Crankcase gases are drawn through the breather port in the top of the camshaft cover and routed through the breather
hose and breather valve on the flexible air intake duct to be drawn into the turbocharger intake for delivery to the air
inlet manifold via an intercooler.
An oil separator plate is included in the camshaft cover which removes the heavy particles of oil before the crankcase
gas leaves via the camshaft cover port. The rocker cover features circular chambers which promote swirl in the oil
mist emanating from the cylinder head and camshaft carrier. As the mist passes through the series of chambers
between the rocker cover and oil separator plate, oil particles are thrown against the separator walls where they
condense and fall back into the cylinder head via two air inlet holes located at each end of the rocker cover.
The breather valve is a depression limiting valve which progressively closes as engine speed increases, thereby
limiting the depression in the crankcase. The valve is of moulded plastic construction and has a port on the underside
which plugs into a port in the flexible air intake duct. A port on the side of the breather valve connects to the camshaft
cover port by means of a breather hose which is constructed from a heavy-duty braided rubber hose which is held in
place by hose clips. A corrugated plastic sleeve is used to give further protection to the breather hose. The breather
valve is orientation sensitive, and “TOP” is marked on the upper surface to ensure it is mounted correctly.
It is important that the system is airtight so hose connections to ports should be checked and the condition of the
breather hose should be periodically inspected to ensure it is in good condition.

EMISSION CONTROL - V8
DESCRIPTION AND OPERATION 17-2-3
Evaporative emission system
component layout
1Purge valve
2Service port
3Snorkel tube (UK / ROW only)
4CVS unit (NAS vehicles with vacuum type leak
detection only)
5EVAP canister breather tube
6Vent pipe – fuel tank to EVAP canister
7Relief valve regulated flow
8Relief valve (UK / ROW only)
9Relief valve free flow
10Fuel filler cap
11Liquid vapour separator (UK / ROW type
shown)12Fuel filler hose (UK / ROW type shown)
13Tank breather hose (UK / ROW only)
14Vent hose
15Roll over valves (ROV's) – (4 off, UK / ROW
spec. shown)
16Fuel tank and breather assembly
17EVAP canister
18Purge line connection to engine manifold
19Tank EVAP system pressure sensor (NAS
vehicles with vacuum type leak detection only)
M17 0209
4
3
1
6
5
16
10
8
13
17
9
7
11
12
15
14
18
2
19