COOLING SYSTEM
5
- 8
RSV mille
2%-/6).' 4(% 4(%2-!, %80!.3)/.
6!,6%
Carefully read 0.2.1 (PRECAUTIONS AND GENERAL
INFORMATIONS) and 1.2.5 (COOLANT).
◆
Drain the cooling circuit completely, see 2.16 (CHANG-
NOTE
Obtain appropriate pliers to attach the clamps,
or screwdriver-type pipe clamps to replace the original
ones (special type without screw).
◆
Release the head off the pipe clamp (1).
◆
Pull the pipe (2) off the thermal expansion valve (3).
◆
Loosen the clamps (4-5).
◆
Grip the thermal expansion valve (3) and pull it free of
the two couplings (6-7) one small step at a time.
a
CAUTION
Plug the coupling openings so as to prevent any for-
eign bodies falling in.
5.6.1 CHECKING THE THERMAL EXPANSION VALVE
Carefully read 0.2.1 (PRECAUTIONS AND GENERAL
INFORMATIONS) and 1.2.5 (COOLANT).
◆
Remove the thermal expansion valve, see 5.6 (RE-
MOVING THE THERMAL EXPANSION VALVE).
◆
Check the heat-sensitive wax for signs of cracking or
excessive wear: in this case, replace the whole valve
(3).
Check the valve (3) is working properly as follows:
◆
Tie a piece of string around the valve (3).
◆
Place a container (8) holding coolant on a burner (9).
◆
Immerse the valve (3) in the container.
NOTE
The valve (3) must be fully submersed without
allowing it to touch the walls or bottom of the container
(8).
◆
Secure the string so that the valve (3) remains in place.
◆
Heat the coolant, using a thermometer (10) with a 0 to
150 °C (32 to 302 °F) range to check the rise in tem-
perature.
◆
Take note of the temperature reading when the valve
(3) starts to open.
Valve (3) opening temperature: 65 ± 2 °C (149 ± 3.6 °F).
◆
Continue heating the coolant.
◆
When the temperature of the coolant reaches 80 °C
(176 °F), the valve (3) should have opened by at least
7 mm (39 mm measured from the edge).
Valve (3) opening:
≥
7 mm at 80 °C (176 °F).
NOTE
If the valve does not meet both conditions (initial
opening temperature and maximum opening), it must be
replaced.
2
1
3
5
7
6
4
9
10
8
3
Summary of Contents for 8140172
Page 1: ...RSV mille MIN 956X Service and repair manual aprilia part 8140172 ...
Page 5: ...0 4 RSV mille NOTE ...
Page 6: ...1 1 RSV mille GENERAL INFORMATION 1 ...
Page 28: ...2 1 RSV mille 1 SERVICE AND SETTING UP 2 ...
Page 84: ...3 1 RSV mille 1 3 ENGINE 3 ...
Page 200: ...4 1 RSV mille 1 2 3 FUEL SUPPLY SYSTEM 4 ...
Page 226: ...5 1 RSV mille 1 2 3 4 COOLING SYSTEM 5 ...
Page 236: ...6 1 RSV mille 6 6 6 6 6 ELECTRICAL SYSTEM 6 ...
Page 239: ...6 4 ELECTRICAL SYSTEM RSV mille 42 0 43 9 54 ...