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Datsun 411 Series Service Manual page 25

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ENGINE
Check f o r L o w Oil P r e s s u r e
Check the level of oil in the engine sump by
means of the dip-stick and top up if necessary.
If the warning light is still on after refilling the
sump, switch off and ascertain that the gauge
strainer in the sump is clean and not chocked
with sludge, sale that no air leakage exists at
the strainer union on the suction side of the oil
pump being
defective,
remove
the unit and
rectify the fault.
Removing the F i l t e r
A new filter cartridge should be changed
after f i r s t 2000 miles (3000 km) and then every
10,000 km after this.
The forms part of the main oil gallery of
the engine.
The element of oil filter is sealed
in the container as a unit, it can easily removed
by hand.
Take care not to lose the rubber
sealing ring.
The filtered oil in the element of
filter
cartridge is sent to the oil
passage in the
cylinder block, delivered to all the lubrication
system,crankshaft journal, crank pin, cylinder
bore, locker arm, camshaft journal and chain
tensioner, and finally returned to the oil pan.
The oil filter is provided with a relief valve.
If the temperature of lublicant oil is low at
starting, oil viscosity is high, or if the filtration
resistance of the oil filter element is
large
caused by its choke up, the relief valve will be
opened with pressure difference to bypass oil.
Removing the Oil P a n
The sump capacity is 3.1 litres.
Drain the
oil and replace the drain plug.
Remove
the
set
screw
bolts
which
are
inserted from the underside of the
securing
flange, and the lower bolts from the bottom edge
of the bell housing.
Lower the oil pan from the
engine,
taking care not to damage the
joint
washers in the process.
Removing the Strainer
With the snup lowered it is,
possible to
remove the oil strainer through which oil is
drawn into the oil pump. To remove the strainer
unto the union connecting the oil pick-up to the
pump and unscrew the securing bolts.
The strainer may be dismantled for cleaning
purpose by removing the delivery pipe flange
bolts.
Notice that there are the dowel pins to the
cover which must be positioned correctly when
refitting.
Fig. 2 Oil
Filter
- 9 -

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