Land Rover Lesson 2 Auto Trans Coolingine Rover Manual

EGR Cooler and Modulator
EGR modulator1EGR cooler2
Electric Throttle Body
Inlet air temperature sensor1
Electric throttle body2
Electric throttle flap3
Electric throttle control motor4
Gas inlet port5
The EGR modulator and cooler are a combined unit.The combined EGR modulator and cooler is located
under each cylinder bank, between the exhaust manifold
and the cylinder head. The cooler side of the EGR is
Engine Emission ControlLesson 2 – Powertrain
173Technical Training (G421135) 

connected to the vehicle cooling system, via hoses. The
inlet exhaust side is connected directly into the exhaust
manifolds on each side. The exhaust gas passes through
the cooler and is expelled via the actuator and a metal
pipe into the throttle housing. The EGR modulator is a
solenoid operated valve which is controlled by the ECM.
The ECM uses the EGR modulator to control the amount
of exhaust gas being recirculated in order to reduce
exhaust emissions and combustion noise. The EGR is
enabled when the...

CRANKCASE VENTILATION
Breather tube1
Oil separator2
Breather tube3
Crankcase oil return connection4
Oil return tube5
Crankcase oil return valve6
Breather flow7
Engine Emission ControlLesson 2 – Powertrain
175Technical Training (G421135) 

The crankcase ventilation system on the TdV6 ensures
that all gasses emitted from the crankcase during engine
running are separated from any oil particles.
Crankcase gasses are drawn into the oil separator unit
from the crankcase and the cylinder head covers (both
banks) where the gas and oil are separated. The gas is
returned to the inlet side of the air induction system
prior to the turbo charger. The oil is drained down to
the sump via an oil return valve locate at the rear of the
cylinder block....

External View
NOTE: Variant without oil cooler shown.
GENERAL
The V6 petrol engine is a 4.0 litre, 6 cylinder, 60 degrees
V unit, with 2 valves per cylinder, operated by a single
overhead camshaft. The engine emissions comply with
ECD4 (European Commission Directive) and USA Tier
2 Bin 8 legislative requirements and employs catalytic
converters, electronic engine management control,
positive crankcase ventilation and exhaust gas
recirculation to limit the emission of pollutants. The
cooling system is a...

The cylinder block is of cast iron construction with a
cast aluminium ladder frame and balance shaft assembly
bolted to the bottom of the block. The cylinder heads
are cast aluminium with vinyl ester composite camshaft
covers. The single-piece oil sump is formed from
pressed steel. The intake manifold is manufactured from
cast aluminium and incorporates a central chamber with
six inlet port tracts . The dual wall stainless steel exhaust
manifolds are unique for each cylinder bank and a
moulded plastic...

CYLINDER BLOCK COMPONENTS
NOTE: Variant with oil cooler shown.
(G421093) Technical Training18
Lesson 2 – PowertrainEngine 

Piston Rings1
Piston2
Piston pin3
Connecting rod4
Connecting rod bearing - upper5
Connecting rod bearing - lower6
Connecting rod cap7
Oil filter8
Oil cooler (if fitted)9
Oil filter adapter mounting bolt10
O ring11
O ring12
Oil filter adapter13
O ring14
Knock sensor15
Cylinder block16
Locating dowel17
Knock sensor18
Oil pressure switch19
Starter motor20
Gasket21
Front cover22
Seal23
Gasket24
Water pump25
Crankshaft pulley26
Jackshaft shaft chain27
Jackshaft shaft sprocket28
Chain tensioner29
Jackshaft...

Engine Data Locations
Engine data1
Engine data2
Vehicle Identification Number (primary location)3
Vehicle Identification Number(secondary
location)
4
Engine data is marked at three locations.
(G421093) Technical Training20
Lesson 2 – PowertrainEngine 

Pistons and Connecting Rod Assembly
Piston ring, upper compression1
Piston ring, lower compression2
Piston rings, oil control3
Piston4
Piston pin5
Connecting rod6
Oil squirt hole7
Connecting rod bearing, upper8
Connecting rod bearing, lower9
Connecting rod cap10
Nut11
Bolt12
The aluminium alloy, thermal expansion, lightweight
pistons, with semi-floating piston pins, are offset to the
thrust side and are carried on forged steel connecting
rods. Pistons are supplied in four grades, 1, 2, 3 and 4.
The...