Contents: Examination ↓ Removal and installation ↓
Water Pump - 4 Cylinder Engine
1. Bypass tube; 2. Sealing ring; 3. Gasket; 4. Inlet pipe; 5. Gasket; 6. Thermostat; 7. Adjusting plate; 8. Water pump; 9. Gasket; 10. Water pump cover; 11. Intermediate pulley N₂; 12. Spring; 13. Intermediate pulley N1
Examination
1. If the water pump is faulty, it must be replaced immediately, otherwise the engine may be seriously damaged due to overheating.
2. Warm up the engine to normal operating temperature and pinch the upper radiator hose with your hand. If the pump is working properly, you should feel fluid pressure when you release the hose.
3. The water pump is equipped with filter holes. If the pump gasket wears out, the liquid will start to leak from these holes.
4. If the pump shaft bearing fails, a whistling sound will be heard from the front of the engine.
Removal and installation
4-cylinder engine
1. Disconnect the negative battery cable.
2. Remove the timing belt and idler pulleys.
3. Remove the adjusting plate (indicated by the arrow) generator. Remove the air conditioning compressor and move it to the side without disconnecting the hoses from it. Disconnect the lower radiator hose.
(This material is taken from a resource: TOYOTAMAN.ru)
4. Remove the water pump bolts. Remove the pump and its gasket.
5. Disconnect the bypass hose, unscrew the two nuts and remove the heating system tube.
6. Clean the mating surfaces of the pump thoroughly.
7. Install new gaskets and o-rings, install the pump.
8. Install the bolts as shown in the figure.
9. Tighten three more bolts in the sequence shown.
10. Install the remaining parts.
6-cylinder engine
1. Disconnect the negative battery cable and drain the coolant.
2. Remove the timing belt and camshaft sprockets.
3. Remove the bolt securing the intake pipe to the alternator regulator. Remove the intake pipe and thermostat. Disconnect the wiring harness from the clips (indicated by arrows), move the harness and remove the rear timing belt cover.
4. Unscrew one of the long pump rods to remove the pump (indicated by the arrow).
5. Clean the mating surfaces of the pump thoroughly.
6. Install new gaskets (indicated by the arrow). Install the pump and tighten the pump bolts.