Removing The Water Pump Cover - PIAGGIO MP3 400 i.e. Service Manual

Cooling system
•
Place the vehicle on its centre stand and on flat ground.
•
Remove the bodywork components as described in the "Bodywork" Chapter.
•
Remove the muffler to access the flywheel cover as described in the "Removing the Engine
from the Scooter" Chapter.
•
Empty the cooling system, removing the hoses located on the water pump cover and the
loading cap located on the expansion tank.
CAUTION
THIS OPERATION MUST BE CARRIED OUT WHEN THE ENGINE IS COLD.
•
Remove the water pump cover shown
in the figure by loosening the 6 fasten-
ing screws.
•
Proceed to partially drain the circuit as
described in the "Engine" Chapter.
•
Once the fault has been fixed and all
components have been replaced, fill
and purge the system again.
N.B.
FOR CHANGING THE COOLANT AND BLEED-
ING THE SYSTEM, SEE THE "COOLANT
CHANGE" SECTION.
Characteristic
Cooling system
~ 1.8 l

Removing the water pump cover:

- Check that the water pump cover is not deformed
or dented.
- Check that the sealing O-ring is in good working
order.
- Otherwise, replace the component.
- Correctly fit a new O-ring, do not allow it to come into contact with grease or oil.
CAUTION
FAILURE TO OBSERVE THIS ADVICE CAN IRRETRIEVABLY DEFORM THE O-RING.
- Refit the water pump cover and tighten the 6 fixing screws to the prescribed torque.
Locking torques (N*m)
Water pump cover screws 3 ÷ 4
See also
Engine
COOL SYS - 6
MP3 400 i.e.