PIAGGIO Beverly 500 i.e. - Excessive System Pressure; Cooling Fluid Consumption; Oil in the Fluid

N.B.
AVOID CONTACT BETWEEN THERMOSTAT AND CONTAINER FOR A CORRECT TEST PER-
FORMANCE.
diagnosis
Excessive system pressure
1 - Check the expansion tank cap efficiency.
N.B.
THE CAP IS EQUIPPED WITH A PRESSURE-RELIEF VALVE CALIBRATED AT 0.9 BAR.
There is also a valve that must allow air inlet during the cooling step.
YES go to 2 NO go to 3
2 - Check the head gasket seal (see «Thermal group and timing system» chapter)
3 - Replace the cap.
Cooling fluid consumption
1 - Check the system outer seals as described above.
YES go to 2 NO go to 3
2 - Check the head gasket seal (see «Thermal group and timing system» chapter)
- If water leaks are detected in the engine oil, inspect the pad on the head cooling circuit.
3 - Fix any damaged seals.
Oil in the fluid
1 - Presence of oil in the coolant.
YES go to 2
2 - Check the head gasket seal (see «Thermal group and timing system» chapter)
Beverly 500 i.e. Cooling system
COOL SYS - 309