Land Rover 4 0 4 6 V8 Engine Overhaul 4th Edition Rover Manual

ENGINE
CONTENTS
Page
Pistons - remove 33..................................................
Pistons - inspection 34................................................
Gudgeon pins - inspection 35...........................................
Cylinder liner bore - inspection 35........................................
Pistons - refit 36.....................................................
Piston to cylinder bore clearance - checking 37.............................
Pistons and connecting rods - refit...

ENGINE
DESCRIPTION AND OPERATION1
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ENGINE
2
DESCRIPTION AND OPERATION 

ENGINE
DESCRIPTION AND OPERATION3
CYLINDER BLOCK COMPONENTS
1.Cylinder block
2.Connecting rod
3.Piston and gudgeon pin
4.Core plugs
5.Camshaft
6.Dipstick
7.Camshaft Woodruff key
8.Timing chain
9.Camshaft sprocket
10.Thrust plate
11.Timing cover and oil pump assembly *
12.Oil pressure switch
13.Oil pressure by-pass valve assembly
14.Oil pressure relief valve assembly - if fitted
15.Crankshaft sprocket
16.Oil filter
17.Timing cover oil seal
18.Woodruff keys
19.Crankshaft
20.Centre main bearing shell -...

ENGINE
4
DESCRIPTION AND OPERATION 

ENGINE
DESCRIPTION AND OPERATION5
CYLINDER HEAD COMPONENTS
1.Cylinder head
2.Rocker cover
3.Rocker shaft spring
4.Rocker arm
5.Rocker shaft bracket
6.Pushrod
7.Tappet
8.Rocker shaft
9.Inlet valve seal, spring, cap and collets10.Exhaust valve seal, spring, cap and collets
11.Exhaust valve and seat
12.Inlet manifold gasket and seals
13.Inlet valve and seat
14.Cylinder head gasket
15.Valve guide
16.Secondary air injection adapters - if fitted
17.Spark plug 

ENGINE
6
DESCRIPTION AND OPERATION
OPERATION
The V8 engine is an eight cylinder, water cooled unit
comprising cast aluminium cylinder block and
cylinder heads.
The cast iron cylinder liners are shrink fitted and
located on stops in the cylinder block. The banks of
cylinders are at 90°to each other. The crankshaft is
carried in five main bearings, end-float being
controlled by the thrust faces of the upper centre
main bearing shell.The centrally located camshaft is driven by the
crankshaft via a chain....

ENGINE
DESCRIPTION AND OPERATION7
1.Oil strainer
2.Oil pump
3.Oil pressure by-pass valve4.Oil pressure switch
5.Oil pressure relief valve - if fitted
AOil to cooler - if fitted
BOil from cooler - if fitted
Lubrication
The full flow lubrication system uses a gear type oil
pump driven from the crankshaft. The assembly is
integral with the timing cover which also carries the
full flow oil filter, oil pressure switch, oil pressure
by-pass valve and oil pressure relief valve - if fitted.
Oil is drawn from the...

ENGINE
8
DESCRIPTION AND OPERATION Hydraulic tappets
1.Clip
2.Pushrod seat
3.Inner sleeve
4.Upper chamber
5.Non-return ball valve
6.Spring
7.Outer sleeve
8.Lower chamber
The purpose of the hydraulic tappet is to provide
maintenance free and quiet operation of valves. It
achieves this by utilising engine oil pressure to
eliminate the mechanical clearance between the
rockers and the valve stems.During normal operation, engine oil pressure,
present in the upper chamber, passes through the
non-return ball...

ENGINE
OVERHAUL1
ROCKER SHAFTS
Rocker shafts - remove
1.LH rocker shaft only:Remove screw securing
dipstick tube to rocker cover.
2.Noting fitted positions of 2 longer screws or
multi-hex bolts, remove and discard
screws/bolts securing rocker cover to cylinder
head.
3.Remove rocker cover.
4.Remove and discard gasket from rocker cover.
CAUTION: Gaskets fitted to early engines
were cork; these must be replaced with
later type gaskets which incorporate
compression limiters in the bolt holes.5.Mark each...