125000311 - 1088C WATER PUMP AND THERMOSTAT
CONSTRUCTION FEATURES
Water pump
It is the centrifugal vane type, with an aluminium alloy pump casing and phenolic resin impeller.It is mounted on the cylinder block/crankcase and driven by the crankshaft via a Poly-V belt.Thermostat
Fitted on the gearbox side of the cylinder head, its function is to keep the engine at optimum working temperature:
- at a temperature of < 87 ± 2°C the (closed) thermostatic valve directs the coolant directly towards the pump;
- at a temperature of > 87 ± 2°C the (open) thermostatic valve directs the coolant towards the radiator.