V8 Engine 35, 39, 42: Description, Operation | Page 34
ENGINE
DESCRIPTION AND OPERATION
7
Lubrication - Engine numbers with suffix B
1. Oil strainer
2. Oil pump
3. Pressure by-pass valve
4. Oil pressure switch
5. Oil pressure relief valve
A Oil to cooler
B Oil from cooler
Engine numbers without suffix B
The full flow lubrication system uses an external
gear pump which is driven by the distributor drive
shaft. The oil pump gears are housed in the timing
cover and the oil pressure relief valve and warning
light switch are fitted to the oil pump cover.
Engine numbers with suffix B
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 and pressure
relief valve.
All engines
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 oil
pump 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
to the full flow oil filter and through internal drillings
to the crankshaft where it is directed to each main
bearing and to the big end bearings via Nos. 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
by oil grooves machined in each connecting rod big
end joint face, which are timed to align with holes in
the big end journals on the power and exhaust
strokes.
