Cooling
system Section E
Diagnosis
If
faulty readings are suspected on the
temperature gauge, check the gauge and sender
unit
as
follows:
With the ignition switched on, disconnect the
wire from the thermostat sender unit. The
temperature gauge
needle should then be at the
cold mark. Then earth the sender
unit
wire.
The temperature gauge
needle should then
be
at the
hot
mark, thus indicating that the gauge
is
functioning
correctly. This
would
indicate
that incorrect readings were due
to
a faulty
sender unit,
which
will
need replacement, a
fault in the wiring, or loose connections. If,
however, the fault lies
with
the temperature
gauge, the
unit
will
have
to
be
replaced (see
Section T).
Cooling
system specification
Cooling system capacity inc. heater
2·84
litres
(5
pints)
Radiator
Cap pressure
Thermostat
Type
Starts
to
open
Fully open
Opening distance
Fan
Fan
diameter - 3 blade
Belt
tension
Water
pump
Type
Pulley ratio
Anti-freeze
quantities
Volume
in
Fluid
down
water%
tO °C
(°F)
10
-4
(+25)
15
-7
(+20)
20
-9
(+15)
25
-13
(+9)
30
-16
(
+3)
40
-25
(-13)
50
-37
(
-34)
Solidifies
at
°C
(°F)
-8
(+17)
-14
(
+17)
-19
(-3)
-29
(-20)
-39
(
-38)
-48
(-54)
-58
(
-72)
0·492kg/sq
em
(71b/sq
in)
Wax
86°-89°C
(18r-193°F)
103°C
(218°F)
7·11 mm
(0·280in)
254·0mm
(1
O·Oin)
13mm
(0·50in)
total free movement
Centrifuga
I
1·172:1
Without
heater
With
heater
0·26
litres
(0·45
pints)
0·28
litres
(0·50
pints)
0·39
litres
(0·68
pints)
0·43
litres
(0·75
pints)
0·51 litres
(0·90
pints)
0·57
litres
(1·00
pints)
0·64
litres
(1
·125 pints)
0·71 litres
(1·25
pints)
0·77
litres
(1·35
pints)
0·85
litres
(1·50
pints)
1·02
litres
(1·80
pints)
1·14
litres
(2·00
pints)
1
·27 litres
(2·25
pints)
1·42
litres
(2·50
pints)
5
Specific
gravity
1·016
1·026
1·034
1·042
1·050
1·065
1·080
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