Land Rover Engine V8 4 4 L 2005 Capewell Manual

							 
 
 
The composite thermostat housing is installed between the two cylinder banks, immediately above the coolant pump. 
The thermostat controls the flow of coolant through the radiator. 
 
CRANKSHAFT AND SUMP COMPONENTS 
Item Part Number Description 
1 -Coolant outlet elbow
2 -Bolt
3 -Thermostat housing
4 -Bolt
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Crankshaft and Main Bearings 
Item Part Number Description 
1 -Bedplate
2 -Main bearings - lower
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Six counter-balance weights ensure good vibration levels from the four throw, five bearing crankshaft. Manufactured 
in cast iron, the crankshaft also has undercut and rolled fillets for improved strength. 
 
The crankshaft rear oil seal is a press fit in the bedplate to cylinder block interface. 
 
The main bearings are aluminium/tin split plain bearings. An oil groove in the upper half of each bearing transfers the 
oil into the crankshaft for lubrication of the connecting rod bearings. A aluminium/tin thrust washer is installed each 
side of the top half of the centre main bearing. 
 
Bedplate 
Item Part Number Description 
1 -Crankshaft
2 -Thrust washer
3 -Thrust washer
4 -Main bearings - upper
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The bedplate is a structural casting bolted to the bottom of the cylinder block to retain the crankshaft. The use of a 
bedplate further improves rigidity. Iron inserts, cast into the main bearing supports of the bedplate, minimise main 
bearing clearance changes due to heat expansion. 
 
Two hollow dowels align the bedplate with the cylinder block. 
 
Beads of sealant seal the joint between the bedplate and the cylinder block. 
 
Sump 
 
 
The aluminium alloy structural sump is bolted to the bedplate. A windage tray attached to the underside of the 
bedplate isolates the oil pan from the disturbed air produced by the rotation of the crankshaft, to prevent oil aeration 
and improve oil drainage. A rubber plug at the rear of the structural sump seals the port that provides access to the 
torque converter securing bolts. The engine oil drain plug is located at the front right corner of the oil pan. 
 
A bead of sealant seals the joint between the structural sump and the bedplate. 
 
Oil Pump 
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The oil pump is installed on the crankshaft at the front of the engine. The pump inlet and outlet ports align with oil 
passages in the bedplate. 
 
Starter Drive Plate 
 
 
 
The starter drive plate is attached to the rear of the crankshaft. A timing disc, for the engine speed sensor, is spot 
welded to the front face of the drive plate. 
 
Timing Disc 
Item Part Number Description 
1 -Starter drive plate
2 -Bolt
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CAMSHAFT TIMING COMPONENTS
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Timing Gear 
Multiple link primary and single row secondary chains drive the camshafts of each cylinder bank. The primary chains 
transmit the drive from two sprockets on the crankshaft to variable valve timing units on the intake camshafts. The 
secondary chains transmit the drive from the variable valve-timing units to sprockets on the exhaust camshafts. 
 
A key locates the two drive sprockets on the crankshaft. The crankshafts torsional vibration damper retains the 
sprockets in position. The variable valve timing units and the exhaust camshaft sprockets are non-interference, non-
keyed fits on their respective camshafts; the drive being transmitted by the face to face friction load produced by the 
valve timing unit/sprocket securing bolt. 
Item Part Number Description 
1 -Secondary chain tensioner
2 -Secondary chain
3 -Variable valve timing unit
4 -Primary chain
5 -Primary chain tensioner
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Each chain has a hydraulic tensioner operated by engine oil. The primary chains are lubricated via oil squirt tubes 
located at the front of the engine block, near the crankshaft drive sprockets. A jet of oil from the end of each 
secondary chain tensioner lubricates the secondary chains. The primary chain tensioners act on pivoting flexible 
tensioner blades. The secondary chain tensioners act directly on the chains. Guide rails are installed on the drive side 
of the primary chains. 
 
Timing Cover 
 
 
The aluminium alloy timing cover accommodates the crankshaft front oil seal (a PTFE lip seal). Silicon rubber in-
groove gaskets seal the joint between the timing cover and the front face of the engine. 
 
CYLINDER HEAD COMPONENTS
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Cylinder Heads 
The cylinder heads are unique to each cylinder bank. Deep-seated bolts, to reduce distortion, secure the cylinder 
heads to the cylinder block. Two hollow dowels align each cylinder head with the cylinder block. 
Item Part Number Description 
1 -Camshaft bearing cap
2 -Tappet (shimless)
3 -Collet
4 -Valve spring cap
5 -Valve spring
6 -Valve stem oil seal
7 -Valve
8 -Inlet camshaft
9 -Exhaust camshaft
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The 14 mm spark plugs, one per cylinder, locate in recesses down the centre line of each cylinder head. 
 
The engine-lifting eyes are bolted to the cylinder heads; two on the rear (one per head) and one at the front. 
 
Camshaft Covers 
 
 
The camshaft covers are manufactured from thermo-plastic. The A bank camshaft cover incorporates an outlet for the 
part load engine breather. The bank B camshaft cover incorporates an outlet for the full load engine breather and the 
engine oil filler cap. Identical oil separators are incorporated below the breather outlet in each cover. For additional 
information, refer to   Electronic Engine Controls (303-14B Electronic Engine Controls - 4.4L) 
 
 
Silicon rubber in-groove gaskets seal the joints between the camshaft covers and the cylinder heads. Together with 
spacers and seals on the camshaft cover fasteners, they also isolate the covers from direct contact with the cylinder 
heads, to reduce noise. 
 
Cylinder Head Gasket 
The multi-layered steel cylinder head gasket has cylinder specific water flow cross-sections for uniform coolant flow. 
 
Camshafts 
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