Fuel system LAND ROVER DISCOVERY 2002 User Guide

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 INFORMATION
03-14
Fuel system hoses
All fuel hoses are made up of two laminations, an
armoured rubber outer sleeve and an inner viton
core. If any of the fuel system hoses have been
disconnected, it is imperative that the internal bore is
inspected to ensure that the viton lining has not
become separated from the armoured outer sleeve.
A new hose must be fitted if separation is evident.
Cooling system hoses
The following precautions MUST be followed to
ensure that integrity of cooling hoses and their
connections to system components are
maintained. Hose orientation and connection
Correct orientation of cooling hoses is important in
ensuring that the hose does not become fatigued or
damaged through contact with adjacent
components. Where 'timing' marks (2) are provided
on the hose and corresponding connection, these
must be used to ensure correct orientation. Hoses
must be pushed fully onto their connection points.
Usually, a moulded form (3) on the stub pipe
provides a positive indicator.

GENERAL INFORMATION
03-16
Fuel Handling Precautions
Fuel vapour is highly flammable and in confined
spaces is also explosive and toxic. The vapour is
heavier than air and will always fall to the lowest
level. The vapour can be easily distributed
throughout a workshop by air currents;
consequently, even a small spillage of fuel is
potentially very dangerous.
The following information provides basic precautions
which must be observed if fuel is to be handled
safely. It also outlines other areas of risk which must
not be ignored. This information is issued for basic
guidance only, if in doubt consult your local Fire
Officer.
General
Always have a fire extinguisher containing FOAM,
CO
2, GAS or POWDER close at hand when handling
or draining fuel or when dismantling fuel systems.
Fire extinguishers should also be located in areas
where fuel containers are stored.
Always disconnect the vehicle battery before
carrying out dismantling or draining work on a fuel
system.
Whenever fuel is being handled, drained or stored, or
when fuel systems are being dismantled, all forms of
ignition must be extinguished or removed; any
leadlamps must be flameproof and kept clear of
spillage.
WARNING: No one should be permitted to repair
components associated with fuel without first
having specialist training.
WARNING: Do not remove fuel system
components while the vehicle is over a pit.
Fuel tank draining
Fuel tank draining should be carried out in
accordance with the procedure outlined in the FUEL
DELIVERY section of this manual and observing the
following precautions.
WARNING: Fuel must not be extracted or drained
from any vehicle while it is over a pit. Extraction
or draining of fuel must be carried out in a well
ventilated area.
The capacity of containers must be more than
adequate for the amount of fuel to be extracted or
drained. The container should be clearly marked
with its contents and placed in a safe storage
area which meets the requirements of local
authority regulations.Fuel tank removal
When the fuel line is secured to the fuel tank outlet by
a spring steel clip, the clip must be released before
the fuel line is disconnected or the fuel tank is
removed. This procedure will avoid the possibility of
fumes in the fuel tank being ignited when the clip is
released.
As an added precaution, fuel tanks should have a
'FUEL VAPOUR' warning label attached to them as
soon as they are removed from the vehicle.
Fuel tank repairs - plastic tank
No attempt should be made to repair a plastic fuel
tank. If the structure of the tank is damaged, a new
tank must be fitted.
Body repairs
Plastic fuel pipes are particularly susceptible to heat,
even at relatively low temperature, and can be
melted by heat conducted from some distance away.
When body repairs involve the use of heat, all fuel
pipes which run in the vicinity of the repair area must
be removed, and the tank outlet plugged.
WARNING: If welding is to be carried out in the
vicinity of the fuel tank, the fuel system must be
drained and the tank removed before welding
commences.

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
04-8
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)

TORQUE WRENCH SETTINGS
06-5
Emission control - Td5
Emission control - V8
Engine management system - Td5
TORQUE DESCRIPTION METRIC IMPERIAL
EGR valve pipe Allen screws 10 Nm (7 lbf.ft)
EGR valve to inlet manifold bolts 10 Nm (7 lbf.ft)
EGR intake pipe clip to cylinder head bolts - if fitted 25 Nm (18 lbf.ft)
EGR cooler to cylinder head nut and bolts - if fitted 25 Nm (18 lbf.ft)
TORQUE DESCRIPTION METRIC IMPERIAL
HO
2S Sensors45 Nm (33 lbf.ft)
SAI air manifold union nuts 25 Nm (18 lbf.ft)
Rubber mountings to SAI pump bracket 10 Nm (7 lbf.ft)
SAI control valve to manifold bolts 10 Nm (7 lbf.ft)
SAI pump to bracket nuts 10 Nm (7 lbf.ft)
SAI pump bracket to body bolt 20 Nm (15 lbf.ft)
Vacuum reservoir to mounting bracket bolt 10 Nm (7 lbf.ft)
TORQUE DESCRIPTION METRIC IMPERIAL
ECT sensor15 Nm (11 lbf.ft)
Fuel tank cradle45 Nm (33 lbf.ft)
CKP sensor10 Nm (7 lbf.ft)
MAP and IAT sensor 10 Nm (7 lbf.ft)
Fuel cooler to inlet manifold - upper bolts 25 Nm (18 lbf.ft)
Turbocharger to exhaust manifold 30 Nm (22 lbf.ft)
Turbocharger drain pipe 10 Nm (7 lbf.ft)
Banjo bolt to oil feed pipe 25 Nm (18 lbf.ft)
Fuel temperature sensor 14 Nm (10 lbf.ft)
Pressure regulator 25 Nm (18 lbf.ft)
Glow plugs16 Nm (12 lbf.ft)
EUI clamp bolts32 Nm (24 lbf.ft)
EGR valve to exhaust manifold 10 Nm (7 lbf.ft)
EGR valve to inlet manifold 10 Nm (7 lbf.ft)
EGR clip25 Nm (18 lbf.ft)

TORQUE WRENCH SETTINGS
06-6
Engine management system - V8
Cooling system
Manifolds and exhaust systems - Td5
TORQUE DESCRIPTION METRIC IMPERIAL
Spark plugs20 Nm (15 lbf.ft)
Fuel tank cradle45 Nm (33 lbf.ft)
ECT sensor10 Nm (7 lbf.ft)
CKP sensor6 Nm (4.4 lbf.ft)
CMP sensor8 Nm (6 lbf.ft)
KS sensor22 Nm (16 lbf.ft)
Throttle body10 Nm (7 lbf.ft)
Plenum chamber22 Nm (16 lbf.ft)
Breather adaptor6 Nm (4.4 lbf.ft)
Throttle cable abutment bracket 10 Nm (7 lbf.ft)
TP sensor 2.2 Nm (1.6 lbf.ft)
IACV sensor8 Nm (6 lbf.ft)
HO
2S sensor45 Nm (33 lbf.ft)
Ignition coils8 Nm (6 lbf.ft)
Fuel rail9 Nm (7 lbf.ft)
TORQUE DESCRIPTION METRIC IMPERIAL
Cylinder block drain plug 30 Nm (22 lbf.ft)
Coolant pump24 Nm (18 lbf.ft)
Coolant pump pulley 22 Nm (16 lbf.ft)
Coolant pump cover - Td5 10 Nm (7 lbf.ft)
TORQUE DESCRIPTION METRIC IMPERIAL
Front pipe to turbocharger 27 Nm (20 lbf.ft)
Inlet manifold25 Nm (18 lbf.ft)
Tail pipe25 Nm (18 lbf.ft)
Fuel cooler25 Nm (18 lbf.ft)
EGR valve10 Nm (7 lbf.ft)
Exhaust manifold25 Nm (18 lbf.ft)
Exhaust manifold heatshield (M6) bolts 10 Nm (7 lbf.ft)
Exhaust manifold heatshield (M8) bolts 25 Nm (18 lbf.ft)
EGR pipe Allen screws 10 Nm (7 lbf.ft)

CAPACITIES, FLUIDS AND LUBRICANTS
09-1
CAPACITIES, FLUIDS AND LUBRICANTS
Capacities
The following capacities are only an approximation of
the amount of fluid required to fill the respective
system.
Capacities - UK EURO ROW
Capacities - NAS
Component Metric Units
Fuel tank 95 litres
Engine - Td5:

Engine oil and filter change 7.2 litres

Fill from dry 8.2 litres
Engine - V8 with oil cooler:

Engine oil and filter change 6.27 litres

Engine oil refill from dry: 7 litres
Engine - V8 without oil cooler:

Engine oil and filter change 5.8 litres

Engine oil refill from dry 6.5 litres
Manual gearbox without oil cooler:

Refill 2.3 litres

Fill from dry 2.6 litres
Manual gearbox with oil cooler:

Refill 2.8 litres

Fill from dry 3.1 litres
Automatic gearbox fill from dry
9.7 litres
Transfer box:

Refill 2.0 litres

Fill from dry 2.3 litres
Front and rear axle:

Refill 1.6 litres

Fill from dry 1.7 litres
Cooling system - Td5 Engine:

Refill 8 litres

Fill from dry 13 litres
Cooling system - V8 Engine:

Refill 12 litres

Fill from dry 13 litres
Component US Units
Fuel tank25.5 gal
Engine - V8 with oil cooler:

Engine oil and filter change 6.6 qt

Engine oil refill from dry 7.4 qt
Engine - V8 without oil cooler:

Engine oil and filter change 6.1 qt

Engine oil refill from dry 6.9 qt
Automatic gearbox fill from dry
19.7 pt
Transfer box:

Refill4.1 pt

Fill from dry 4.8 pt
Front and rear axle:

CAPACITIES, FLUIDS AND LUBRICANTS
09-3
Anti-Freeze Concentration
The overall anti-freeze concentration should not fall,
by volume, below 50% to ensure that the anti-
corrosion properties of the coolant are maintained.
Anti-freeze concentrations greater than 60% are not
recommended as cooling efficiency will be impaired.
The following recommended quantities of anti-freeze
will provide frost protection to -48
°C (-53°F):
Engine - TD5
Engine - V8
Lubrication
General
The engine and other lubricating systems are filled
with high-performance lubricants giving prolonged
life.
CAUTION: Always use a high quality oil of the
correct viscosity range in the engine. The use of
oil of the incorrect specification can lead to high
oil and fuel consumption and ultimately to
damaged components.
Oil to the correct specification contains additives
which disperse the corrosive acids formed by
combustion and prevent the formation of sludge
which can block the oil ways. Additional oil additives
should not be used.
Always adhere to the recommended servicing
intervals.
Engine oil viscosity
The above chart indicates the ambient temperature
ranges which each engine oil viscosity is suitable for.
Engine oil - V8 - low compression engine
Use a 10W/40 oil meeting specification ACEA: A2,
and having a viscosity band recommended for the
temperature range of your locality.
Concentration 50%
Amount of Anti-freeze 4 litres
Concentration 50%
Amount of Anti-freeze 6.5 litres
13.5 pts (US)