Cooling system components for a 1.9L, 74kW diesel engine
1 – water pump mounting bolt; 2 – water pump; 3 – sealing ring; 4 – expansion tank hose; 5 – cooling system pipe on the cylinder block; 6 – heater radiator pipes; 7, 11, 14 – tees; 8 – coolant temperature sensor; 9 – locking bracket; 10 – sealing ring; 12 – cylinder head pipe; 13 – pipe mounting bolts; 15 – bolt; 16 – radiator supply hose; 17 – cooling system pipe; 18 – hose to the expansion tank; 19 – radiator supply hose; 20 – thermostat socket cover; 21 – thermostat; 22 – oil filter heat exchanger
If the water pump leaks or its bearings are damaged, the pump must be replaced.
1. Remove the engine splash shield.
2. Drain the coolant (see subsection 5.13).
3. Remove the camshaft drive belt (see subsection 2.4.1).
4. Loosen the mounting bolts 1 and carefully remove the water pump 2 from the engine.
5. Replace the sealing ring 3 if it is torn or has lost its elasticity. It is recommended to replace the ring with a new one, regardless of its condition.
6. Install sealing ring 3 on water pump 2, after cleaning and lubricating the ring with clean coolant.
7. Install water pump 2 on the engine so that the pump pipe is facing downwards.
8. Tighten the pump mounting bolts 1. The tightening torque for the water pump mounting bolts is 15 Nm.
9. Install the drive belt and adjust its tension (see subsection 2.4.1).
10. Fill the cooling system with fluid (see subsection 5.13).