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CONSTRUCTION AND
FUNCT
ION
Lubrication
system
ct
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l·Piston
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F l .
2·0 il
fil
ter
J
-Crankshlift
4 ·0il
strainer
S-Rocker
ann
6·R oc:ker
,heft
(!)
l
.dJ"...
I
7-0
il
pressure st,rm
$w
itch
a·O il
pump
9
·F".
t lI"IleCtl
On pump
'O~Water
pump
Lubrication
oil circu
it
Lube
oil
circu1ntion
A
trochoid
rotary
pump
draws
oil
in
tht oil pan
and
delivers
It
under pressure
lO
<i
fun·flow
oil ftlter
,
from
which
lhe cleaned oil
is
forwarded
Into
lhe
oil
gallery
.
inside the
cranKCase.
From
the
gallery,
the oil is distri·
buted to the
var
ious parls of
the engine
.
The
pump is
driven
from
the
c-a.rnshaft.
The
oil
filter is
of a cartridge type-containing a rep laceable
element
through
which
the
oiJ
is
fOTC~d,
The
element
bctome.s in
creasingly
dirty
as the
sol
id particles
accumu
-
late
on and in
its
text
ure,
thereby increasing the
difference
in
preSSUf~
between
inlet side and oudet
side.
The
.]emen
'
is
to be repl.ced before the
different
i.]
pressure ri ses
10
a level a[
wruch
the valve
located in
the
bypass
passage opens 10
allow
the
oil
to
bypass
Ihe
element
and
flow directly into the oil gallery
.
The bypass
valve is:
an
emer~ency
means;
It opens to
avoid any
cri!really re
duced supply
(If
lube oil
10
the
running pans of
the engine
.
Oil
pan
The
oil pan
i,
•
sheelmetal
vessel
ohaped
deeper
in
ils
front
pan
to pr
ovide an o
il
sump.
The oil sump is
so
located
because
of
its
position
in
the
mathine.
The
oil
le ..
1 gauge i,
located at
its right·hand
side
.
The
gasket, through which
the
oil pan is atta ched
to
t
h~
crankcase.
is
of
rubberized cork
.
22.
Oil
strainer
The
sllaine.l
is 3
m~tal
screen
fitted to
the
suction
si~e
of
the
oil
pump.
11
serves
the
purpose
of preventing any
large-size
solid
particles
from
entering
the pump
.
Oil
pump
The
pwnp is
located inSide Ihe crankcase
.t
it,
right·
hand rear
portion
.
lls.
main
shaft
is
driven
from
the skew
gear
formed
of
the camshaft
.
Being a
troc/!oidal
rotary
pump.
it has
t
wo
rotors,
inner
and
OUler.
Inner
rotor
is
mounted on the
s.haft
and
drives outer
rotoi
instde (he
pump
case.
l·Dnve-
9I!~
r
2·M,ln sh"
ft
3..(:~$eo
4·0u~.r
rotor
&·tnfll'lr
r01Dr
ffl
-
III
_________.1
~
:
I
l
••
T
4
m
9
fi\
(5
Oil pump -
Cross sll(::tion
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