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DESCRIPTION
The oil pump
is
of
trochoidal type;
it
is
driven from the rear end
of
the
injection-pump
camshaft through
an
Oldham coupling. The
discharge pressure
is
kept at a constant level by
a check valve.
The oil filter
is
of
full-flow type. Discharged
oil
is
cleaned while flowing through the cartridge
of
this type oil filter before entering the cylinder
block.
2
4
3
12
6
1-0il filter
2-Check valves
3-0il
pump
4-0il pressure switch
5-Cran kshaft
6-0il screen
8
7-0il pan
8-0il
filler cap
9-Rocker
arm
10-R
0 kcer
shaft
ll-Camshaft
12-0il level gauge
Engine lubrication scheme
Engine oil infonnation
For
the present engine, the engine oil
is
prescribed to be
of
API classification
of
CC
or
above, whose viscosity rating
is
as
follows:
ENGINE
Grade (SAE No.)
Air
temperature
Single
Multi
Below
_lODe
(14°F)
SW
SW-20
-200~oOe
(-4°~
32°F)
lOW lOW-30
-10o~
lOoe
(14°~
50°F)
20W
Oo~
20
0
e
(32°~
68°F)
20
lOo~
3s
o
e
(SOO~
95°F)
30
30
0
e
(86°F)
& above
40
20W-40
The oil in the oil pan should be changed every
100 hours
of
engine operation. The first oil
change should be effected after 50 hours
of
initial operation.
Here's the
method
of
changing the oil: When
the engine
is
still
hot
after a substantial duty
run, drain the oil pan completely, and add the
fresh oil through the filler (whose cap
is
atop
the rocker cover) until the oil surface comes up
to the upper level mark on the level gauge. After
filling up the oil pan, run the engine a minute
or
so
and then re-check the level.
Oil fIlter
This cartridge-type filter
is
easier to handle
because its body and filtering element are
integral.
It
has a built-in check valve on the
upstream side, which
is
arranged to respond to
the differential pressure across the element
When this pressure exceeds
I kg/cm
2
(14.2 psi)
(due, invariably, to a dirty element), the valve
opens
to
allow the oil to bypass the element,
causing an unfiltered oil to flow
into
the
cylinder block in order to maintain an adequate
supply
of
lube oil
to
the running parts
of
the
engine. The filter element
is
prescribed
to
be
replaced by a new one every 100 hours. The
first replacement should be effected after 50
hours
of
initial operation.
Oil filter
2-29
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