Datsun 411 Series User Manual

DATSUN
Thermostat
In
order
to
ensure
maximum
efficiency
it
is essential to
keep
the
engine operating
temperatures
within certain
limit
To assist
this
a
pellet
tyep
thermostat
is
fitted
being
located in the water outlet at front of the
cylinder
head
Pellet
type
thermostat works
by
the
principle
of
rapid
variation
of solution
of
wax
Fig
2
Pellet
Type
Thermostat
The devise consists of metalic
pellet
filled
with the
wax which
controls a mash room valve
by
solution of wax
When the
engine
is
cold this valve
is
closed
and on
starting
the
engine
the flow of water
to
the radiator is
temporarily
restricted
Due this the
temperature
of
the
water in
the
cylinder
head and
cylinder jackets
will
quickly
rise
thus
ensuring rapid warming up
The
heat so
generated
will
gradually press
up
the
piston by shrinkage
of
synthetic
rubber
sleeve so
opening
the valve and
ultimately
pennitting
a full flow of water to the radiator
The
thennostat itself is detachable
therefore
should
be
occasion
arise
it
can be removed
from
its
housing
and
the hose reconnected to
avoid
laying up
the car
The
thennostat
opening
is
set
by
the
manufacturer and can not
be altered
During decabonising
it
is
policy
to
test this
opening by immersing
the thennostat
in water
raised to
requisite temperature
The valve
should open
under these conditions but
if
it
fails to
open
a new unit
should be fitted
Overheating
Overheating may
be caused
by
a slack fan
belt
excessive
carbon deposit
in
the
cylinders
running
with the
ignition
too
far
retarded
incorrect carburetor
adjustment
failure of the
water to circulate or loss
of water
Fan Belt
Adjustment
The fan
is driven from the crankshaft
by
a
V belt
this
also
driving
the alternator
A
new belt can
be
fitted
by
first
loosening
the clamp
bolts
Fig
3
which
hold
the
dynamo
in
position
and
moving
the
dynamo
towards the
engine
Slide the belt over the
fan and onto the
fan
pulley
Fig
3 Fall
Belt
AdjustmeTlt
Part
No
Rated
Temperature
Standard
21200
61001
Open
at 76
5
C t 1
5
C
Open
fully
at 90 t 1 5 C
Optional
for
cold district
21200
61001
Open
at 82 C t 1 5 C
Open fully
at
95
t
1 5
C
4
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Datsun 411 Series Specifications

General

Brand	Datsun
Model	411 Series
Category	Automobile
Language	English