Coolant Replacement - PIAGGIO MP3 500 i.e. SPORT Service Station Manual

MP3 500 i.e. SPORT Business_LT_ ABS-ASR_EU_USA (2015)
system
- If the electric fan is certainly efficient, check the ventilation start and stop temperatures.
- Select the «PARAMETERS» function in this menu to display the coolant temperature.
Electric fan starts: 107°C
Electric fan stops: 103°C
- If non-conforming values are detected, replace the injection control unit (see «Injection» Chapter).
- If the analogue instrument temperature is close to the red zone, but the degrees indicated by the
diagnostic tester are below the electric fan start temperature, check the temperature sensor on the head
and the relevant injection circuit (see «Injection» chapter);
N.B.
THE ELECTRIC FAN TEMPERATURE AT 107° C CAN ONLY BE MANAGED BY A SYSTEM SUP-
PLIED WITH A 50% MIXTURE AND PRESSURISED AT 0.9 BAR.
AVOID STARTING THE ENGINE WITHOUT PRESSURISATION SINCE IT MAY REACH THE BOIL-
ING TEMPERATURE BEFORE THE ELECTRIC FAN STARTS WORKING.
IN CASE OF AN INCREASE OF THE ELECTRIC FAN START TIME, CHECK THE THERMOSTAT
OPENING TEMPERATURE AND CHECK THAT THE COOLANT DENSITY IS CORRECT. THE OP-
TIMUM DENSITY IS OBTAINED WITH A 50% WATER / 50% COOLING CIRCUIT FLUID MIXTURE.
System sealing check
- Check the proper circuit sealing when it is under
pressure and at the temperature.
- For a more accurate check, wait until the system
has cooled down since small leaks may not be
visible due to evaporation
- The water pump is provided with a drainage hole
in case of leaks from the cooling system mechan-
ical seal, or from the shaft sealing oil guard.
- If coolant or oil leaks are detected, replace the pump (see «Flywheel Cover» Chapter).
N.B.
DO NOT USE OILS OR GREASES WHILE MOUNTING THE COOLING SYSTEM. FAILURE TO OB-
SERVE THIS PRECAUTION WILL IRRETRIEVABLY DEFORM THE SEALING GASKETS.

Coolant replacement

System filling instructions
- Prepare the mixture of 50% water and 50% cool-
ant.
- Fill the system to reach a level ranging between
the MIX and MAX levels indicated in the expansion
tank filler.
- Do not close the expansion tank with the cap.
Cooling
COOL SYS - 395