Workshop Manuals Factory service & repair Land Rover
01 4.0 & 4.6 Litre V8 Engine - 4th Edition02 03 04 05 INFORMATION06 07 08 GENERAL DATA09 10 11 12 TORQUE WRENCH SETTINGS13 SERVICE TOOLS14 15 16 17 18 DESCRIPTION AND OPERATION19 20 21 OVERHAUL
Land Rover Engine Overhaul Manual v8 4.0 4.619 ·
19 · General

DESCRIPTION AND OPERATION (page 2 of 3)

Make
Land Rover
Model
Engines Engine Overhaul Manual v8 4.0 4.6
DESCRIPTION AND OPERATION · page 2 of 3
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ENGINE

DESCRIPTION AND OPERATION

7

1. Oil strainer
2. Oil pump
3. Oil pressure by-pass valve

4. Oil pressure switch
5. Oil pressure relief valve - if fitted

A Oil to cooler - if fitted
B Oil 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 pressed steel sump through a
strainer and into the oil pump, excess pressure
being relieved by the pressure relief valve. The oil
pressure warning light switch is screwed into the
timing cover and registers the oil pressure in the
main oil gallery on the outflow side of the filter.

Pressurised oil passes through an oil cooler - if fitted
mounted in front of the radiator to the full flow oil
filter. The oil then passes through internal drillings to
the crankshaft where it is directed to each main
bearing and to the big end bearings via numbers 1,
3 and 5 main bearings.

An internal drilling in the cylinder block directs oil to
the camshaft where it passes through further internal
drillings to the hydraulic tappets, camshaft journals
and rocker shaft. Lubrication to the thrust side of the
cylinders is either by oil grooves machined in each
connecting rod big end joint face or by splash.

Parts & tools for this job Staging For Land Rover Engines

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