Land Rover Lesson 2 Auto Trans Coolingine Rover Manual

Engine Ladder Frame Assembly
69.8 mm minimumA
Engine bulkhead housing1
Crankshaft main bearing cap adjustment screw2
The ladder frame is fitted to the lower cylinder block,
via 20 bolts and 2 studs and nuts, to stiffen the base
structure thus helping to reduce Noise, Vibration and
Harshness (NVH). The frame is made of high-pressure
die cast aluminium.
Located in the bulkhead housing are eight crankshaft
main bearing cap adjustment screws.
A gasket seals the joint between the bulkhead housing
and the...

Oil Pick-upOil pick-up1
The oil pick-up is a two-piece unit with strainer located
in the centre of the sump oil well, as a source for the
supply of engine lubrication oil to the oil pump. Oil is
drawn though the end of the pick-up and strained to
prevent solid matter from entering the oil pump.
EngineLesson 2 – Powertrain
33Technical Training (G421093) 

CAMSHAFT TIMING COMPONENTS
Front of engineALH camshaft drive assembly1
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Lesson 2 – PowertrainEngine 

RH camshaft drive assembly2
Spacer3
Jackshaft sprocket4
Chain guide5
Jackshaft chain tensioner6
Tensioner pin7
Jackshaft chain8
Camshaft Drive Assembly
Each camshaft drive assembly comprises:
•A jackshaft gear
•A camshaft gear
•A drive chain
•A chain guide
The LH drive assembly is driven from the front of the
jackshaft and the RH assembly from the rear.
EngineLesson 2 – Powertrain
35Technical Training (G421093) 

CYLINDER HEAD COMPONENTS
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Lesson 2 – PowertrainEngine 

Hose, crankcase emissions, RH camshaft cover
to intake manifold
1
Fuel injector pulse damper2
RH Fuel rail3
LH injectors (3 of)4
Fuel supply line5
Schrader valve6
RH injectors (3 of)7
Hose, crankcase emissions, LH camshaft cover
to intake manifold
8
Electrically heated positive crankcase ventilation
valve
9
Camshaft position (CMP) sensor10
Oil filler cap11
LH camshaft cover12
LH valve rocker arm oil supply tube13
LH camshaft bearing caps14
LH camshaft15
Valve rocker arm16
Collet17
Valve spring retainer...

Cylinder Heads
RH cylinder head1LH cylinder head2
The cross-flow cylinder heads are based on a twin valve,
central spark plug combustion chamber, with the inlet
ports designed to induce swirl and control the speed of
the induction charge. This serves to improve combustion
and hence fuel economy, performance and exhaust
emissions.
LH and RH cylinder heads are identical castings.
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Lesson 2 – PowertrainEngine 

Camshafts
Bearing cap1Camshaft2
A single camshaft on each cylinder bank is retained by
a camshaft carrier, line bored with the cylinder head.
The camshafts are located by a flange, which also
controls end-float.
The LH camshaft incorporates a reluctor, which is used
in conjunction with the Camshaft Position (CMP) sensor
to measure engine position.
EngineLesson 2 – Powertrain
39Technical Training (G421093) 

Valves and Hydraulic Lash Adjusters
Valve stem seal1
Valve spring2
Valve spring retainer seat3
Valve spring retainer key4
Rocker arm5
Hydraulic lash adjuster6
Valve7
The valve springs are made from spring steel and are
of the parallel single-coil type. The bottom end of each
spring rests on the flange of a spring retainer, which has
an integral valve stem seal. The top end of the spring is
held in place by a spring retainer, which is held in
position at the top end of the valve stem by split taper...

Valve Rocker Arm Oil Supply Tube
Valve rocker arm oil supply tube1
The valve rocker arm oil supply tube locates on top of
each camshaft and is secured by two bolts to the front
and rear camshaft bearing caps. Oil is supplied to the
tube via a gallery in the cylinder head and is distributed
to each rocker arm through adjacent spray holes in the
tube.
EngineLesson 2 – Powertrain
41Technical Training (G421093)