Datsun 411 Series User Manual

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DATSUN
LUBRICA TION
Circulatiol
Pressure lubrication
is
used
throughout
the
unit and is
provided by
an ecentric
non
draining
oil
pump The oil pump
is
bolted
into the
left
hand side of
the crankcase and is driven from
the camshaft
gear
by
a
short
vertical shaft
The oil is drawn into the
pump
via the
filter
and
is
delivered
through
internal
oilways
to the
relief valve
which is
situated at
the
cover
of
oil
pump
Fig
1
From
the relief valve
the
oil
passes
into
the
main
oil
gallery
on the
right
hand side
of the
engine
The flow
then
passes
via
connecting
oilways
to
the
main
big
end and camshaft
bearings through drillings
in
the crankshaft
The
connecting
ends are
drilling
in
the
cylinder
block
and
the rear
rocker
shaft bracket to
lubricate the rockers and
then drains back
into
the
oil
pan
via
the
push
rod apertures The oil
from the center camshaft
bearing
enters
a
gallery
on
the left hand side
of the
engine
and
lubricates the
tappets
through
individual drill
ings
As the
camshaft
rotates
two
grooves
in
the front
journal
register
with
a
small hole
in
the camshaft thrust
plate
thus
allowing
a small
amount of oil to
pass
into
the
timing
case
twice
during
case revolution of
the camshaft
to
provide
lubric
ation
for the
timing
chain and
gears
From the
timing
case
the oil
returns via
a drain
hole back to
the oil
pan The filter therefore
forms
part
of the main oil
gallery
and as such is
filled with oil
under
pressure
The
full of the
oil enters
the
element
through
holes
in the
cartridge
and
passes through
the
element
into the annular
space
round
the
center
pipe
This
space
is
sealed top and bottom so that
the
oil
can
only escape through
a
small
hole into
the hollow center
pipe
and
from this point back
into the oil
pan
Draining
the Oil
The oil
on new
and
reconditioned
engines
must
be drained and then filled with new oil
after
first
2000 mileB 3000 Lan and at
intervals
of
every
3000
miles
5000 Lan
The drain
plug
is at the
oil
pan
The oil should be drained
when the
engine
is hot as the oil will flow
more
readilY
Before
filling
the
oil
pan
with new oil dis
connect and
change
the oil
cartridge
Oil Pressure
The
oil
pressure
should
not
drop
below 30
lb
sq
in 2
1
kg
cm2
on
the
gauge
at normal
road
speeds
whilst
approximately
10
lb
sq
in
0 7
kg
cm2 should
be shown
when the
engine
is
idling
New
engines
with
new oil will
give
considerably higher readings
at
low
speeds
should there be a noticeable
drop
in
pressure
the
following
points
should
be checked
a
That there
is
a
good
supply
of the correct
grade
of oil
in
the oil
pan
b
That the strainer in the oil
pan
is
clean and
not choked with
sludge
c That
the
bearings
to which
oil
is
fed
under
pressure
have the
correct
working
clear
ances excessive
the oil will
escape
more
readily
from
the
sides
of
the
bearings
particularly
when the oil is
warm
and
becomes more fluid
This will
cause a
drop
in
preBsure
on the
gauge
as
compared
with that shown when the
bearings
are in
good
order
The relief valve
in
the lubrication
system
deals with
any
excessive
oil
pressure
when
starting
from cold
When hot
the pressure
drops
as the oil becomes more
fluid
8
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Datsun 411 Series Specifications

General

Brand	Datsun
Model	411 Series
Category	Automobile
Language	English