Engine coolant pump 3F-E
1. Bypass hose; 2. Oil cooler hose; 3. Gasket; 4. Pump; 5. Pulley flange; 6. Drive belt; 7. Fluid coupling; 8. Impeller; 9. Pulley; 10. Inlet hose; 11. Pump plate; 12. Heater hose
Engine coolant pump 1FZ-FE
1. Gasket; 2. Pump; 3. Pulley; 4. Drive belt; 5.Inlet hose; 6. Casing; 7. Impeller; 8. Bypass hose; 9. Fluid coupling
Examination
1. With the engine running warm, carefully pinch the upper radiator hose and release it gradually. With a working pump, fluid pressure should be felt in the hose.
2. The pump has a control hole for draining fluid. If the pump seal fails, coolant flows out through the control hole. To find this hole, you need to highlight the space behind the driven flange of the pump, directly under the shaft.
3. Bearing wear can be detected by rocking the pump up and down and by a distinctive whine at the front of the engine.
4. A slipping drive belt can also produce a sound close in tone, so an erroneous conclusion can be made about a pump malfunction.
5. To eliminate sound from the belt, spray on a special compound for automotive belts.
Removal and installation
1. Disconnect the battery from the ground and drain the coolant (see subsection 2.38).
2. Remove all accessory belts.
3. On cars up to 1992, remove the air conditioning belt tensioner pulley and bracket, as well as the alternator mounting bracket.
4. Remove fan shroud and fan (see subsection 4.4).
5. Remove the pulley from the pump and disconnect the hoses.
6. Turn away bolts (indicated by arrows) and remove the pump.
7. Disassemble pump and replace gaskets.
8. Thoroughly clean the split plane of the cover from the remnants of the gasket.
9. Installation is carried out in the reverse order.
10. Bolts tighten with the set moment.