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Chapter
3
Cooling system (liquid-cooled engine)
Refer to Chapter 1 for model identification details
Contents
.....................
......................................
Coolant hoses
-
removal and installation
8
General information
1
Coolant level check
..................
.see Daily (pre-ride) checks
Radiator
-
removal and installation
..........................
6
Coolant reservoir
-
removal and installation
...................
5
Temperature gauge and sender
-
check and replacement
. . . . . . . .
3
Cooling system checks
.........................
.see Chapter 1
Thermostat
-
removal, check and installation
..................
4
Cooling system
-
draining, flushing and refilling
................
2
Water pump
-
check, removal and installation
.................
7
Degrees of difficulty
Specifications
Coolant
Typeandmixture
........................
E a s y , s u W f a
$
novicewith l i i
g
experience
$
Temperature sender
Resistance
@20°C
..............................
@90°C
..............................
Torque settings
Water pump mounting bolts
................
F ~ e a s ~ , s u W
$
for
beginnerwith
suitable for competent
\
m e x p e k n c e
$
..................
50% distilled water and 50% Procor 3000 anti-freeze is needed.
Peugeot state that other anti-freeze products will not mix with
Procor 3000.
D M a l s s u ~ ~
' %
V
a
y
~
experienced DIY
a
1
suitableforexpertDIY
s?
\
mechanic
$
a p o ~ i
$
1.91 to 2.58 K-ohms
..................
92 to 124 ohms
. . . . . . . . . . . . . . . . . .
General informati
ion
The cooling system uses a watedantifreeze
coolant to cany excess energy away from the
engine in the form of heat. The coolant is
contained within a water jacket inside the
cylinder and cylinder head which is connected
to the radiator and the water pump by the
coolant hoses.
Coolant heated by the engine is circulated
by thermo-syphonic action, and the action of
the pump, to the radiator. It flows across the
radiator core, where it is cooled by the
passing air, then through the water pump and
back to the engine where the cycle is
repeated.
A thermostat is fitted in the cylinder head to
prevent the coolant flowing to the radiator
when
the
engine
is
cold,
therefore
accelerating the speed at which the engine
reaches normal operating temperature. A
coolant temperature sender mounted in the
cylinder head is connected to the temperature
gauge on the instrument panel.
A
Warning: Do not remove the
reservoir cap when the engine is
hot. Scalding hot coolant and
steam may be blown out under pressure,
which could cause serious injury.
A
Warning: Do not allow antifreeze
to come in contact with your skin
or painted or plastic surfaces of
the scooter. Rinse off any spills immediately
with plenty of water. Antifreeze is highly
toxic if ingested. Never leave antifreeze
lying around in an open container or in
puddles on the floor; children and pets are
-
-
-
attracted by its sweet smell and may drink
it. Check with the local authorities about
disposing
of
used antifreeze.
Many
communities will have collection centres
which will see that antifmze is disposed of
safely. Antifreeze is also combustible, so
don't store it near open flames.
Caution: At all times use the specified type
of antifreeze, and always mix i t with
distilled water in the correct proportion.
The
antifreeze
contains
corrosion
inhibitors which are essential to avoid
damage to the cooling system. A lack of
these inhibitors could lead to a build-up of
corrosion which would block the coolant
passages, resulting in overheating and
severe engine damage. Distilled water
must be used as opposed to tap water to
avoid a build-up of scale which would also
block the passages.
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