41
OXE 150/200 HP SERVICE MANUAL
SYSTEM AND ASSEMBLY OVERVIEWS
ENGINE LUBRICATION SYSTEM
Oil is applied under pressure to the crankshaft, connecting rods, camshaft bearing surfaces, valve lash
adjusters, and turbocharger. All other moving parts are lubricated by gravity flow or splash. Oil is sucked by a
pipe out of the
dry sump
.
The
oil pump
is driven by the crankshaft. The oil pump body is installed at the front side of the engine block.
The pressurized oil from the pump passes through the oil filter.
The
oil filter
is located on the intake side of the engine block. The oil filter is housed in a casting that is
flange-connected on the engine block. The oil filter is a disposable cartridge type.
A
by-pass valve
allows continuous oil flow in case the oil filter should become restricted. Oil then enters the
gallery where it is distributed to the
crankshaft
and
camshafts
.
The
connecting rod bearings
are oiled by constant oil flow passages through the crankshaft connecting and
the main journals to the rod journals. The pressurized oil passes through the cylinder head restrictor orifice
into the cylinder head and then into each camshaft feed gallery. Cast passages feed each hydraulic element
adjuster and each camshaft bearing surface. An engine oil pressure switch or sensor is installed at the oil filter
adapter.
The
turbocharger
is lubricated with oil via a
feed pipe
and drained by a
return pipe
. Oil returns to the oil pan
through cast passages in the engine block.
Fig. 4
Schematic diagram of engine lubrication system
1.
Crankcase ventilation oil separator
2.
Breather hose
3.
Oil cooler
4.
Oil filter
5.
Dry sump
6.
Oil return pipe
7.
Crankcase ventilation return pipe
8.
Oil pick-up pipe
9.
Oil dipstick tube
Содержание 30-0100-125
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