SUBSECTION 11E
L U B R I C A T I O N SYSTEM
GENERAL
Clean engine oil is assured at all times
by the use of a replaceable element type
full-flow oil filter incorporated in the en-
This section covers repair information on
gine lubrication system. With this type
filters, oil cooler, dipstick, oil pan, and
filter, which is installed in the lubricat-
ing system between the pump and the
ventilation system.
cooler, all of the oil is filtered before en-
tering the engine.
DESCRIPTION
A by-pass type filter with replaceable el-
ement is used,
A portion of the oil is
General
continually by-passed through the filter
and the filtered oil is returned to the
e n g i n e oil pan.
illustrates the flow of oil through the lu-
bricating system including the various
Stabilized oil pressure is maintained with-
components s u c h a s t h e o i l p u m p , o i l
in the engine at all speeds, regardless of
cooler, by-pass and full-flow filters, the
the oil temperature, by means of a regu-
pressure r e g u l a t o r v a l v e a n d b y - p a s s
lator valve located between the pump out-
valve.
let and the inlet to the cylinder block.
When the oil pressure at the valve ex-
ceeds 50 psi (345 kPa), the regulator
gear-type pressure pump mounted on the
valve opens and remains open until the
pressure is less than the opening pres-
No. 1 and No. 2 main bearing caps and
gear driven from the crankshaft.
sure.
All the oil leaving the pump is forced
through the full-flow oil filter to the
O i l Distribution
cooler and then into the oil gallery in the
cylinder block from where it is distrib-
Oil from the cooler is conducted by a
uted to the various engine bearings.
v e r t i c a l passage to a longitudinal main oil
The drain from the cylinder head and
gallery on the blower side of the cylinder
other engine parts leads back to the oil
block.
page 11E-2, this gallery distributes the
pan.
oil, under pressure, to the main bear-
ings and to a horizontal, transverse pas-
A spring-loaded integral plunger-type
sage at each end of the cylinder block.
body, by-passes excess oil from the dis-
From each of these two horizontal pas-
charge to the intake side of the pump
sages, o i l f l o w s t h r o u g h t w o v e r t i c a l
when the pressure in the engine oil gal-
bores (one at each end of the cylinder
lery exceeds approximately 105 psi (724
block) to the end bearings of the cam-
kPa).
shaft and balance shaft. In addition, oil
is forced through an oil passage in the
camshaft which lubricates the camshaft
If the oil cooler should become clogged,
Oil for lubricat-
the oil will flow from the pump through a
spring-loaded by-pass valve directly into
the oil gallery.
Subsection 11E