Subaru Legacy/Outback

1. Failure of the water pump is capable to cause the most serious consequences, up to full jamming of the engine as a result of an overheat. The defective pump is subject to replacement.
2. Warm up the engine up to the normal working temperature and, without suppressing it, squeeze a hand the top hose of a radiator, - if at a hose otpuskaniye in it the liquid push is distinctly felt, therefore, the water pump functions regularly.

Try not to touch with hands a krylchatka of fans!

3. The water pump is usually equipped with a control/air vent. In case of failure of an epiploon from an opening cooling liquid starts exuding. Prepare a pocket small lamp and a small pocket mirror, - the opening is located from below on a pump housing, directly under an assembly axis. Existence round an opening of deposits of brownish color testifies to malfunction of an epiploon, - easy decolouration of a surface (a ring of light gray color) should not cause concern.
4. At failure of bearings of a shaft of the pump in engine operating time in its forward part there can be a howling sound which should not be confused to the whistle published by a driving belt when weakening effort of its tension. Wear of the bearing can be revealed on existence of a side play when rocking a nave/shaft of the pump (do not forget to switch off before the engine and to throw off a belt from a pulley).
5. Even in the absence of external signs of wear the final conclusion about a condition of the water pump can be made only after its removal and more detailed studying.

1. Details of installation of the water pump are shown on sopr. illustrations.
2. Disconnect a negative wire from the battery.
3. The car also establish to Poddomkratta it on props.
4. Remove protection of a case.
5. Empty the cooling system and disconnect an electrical wiring from the main and auxiliary fans (see the Section Check of Serviceability of Functioning, removal, service and installation of fans of the cooling system).

6. Disconnect a final hose of a radiator and a hose of a heater from assembly of the water pump.

7. Remove an air inlet (see the Section Service of Components of an Inlet Air Path).
8. Remove an overflow hose (see the Section Check of Serviceability of Functioning, removal, service and installation of fans of the cooling system).
9. Remove a broad tank (see the Section Check of a Condition of a Cover of a Radiator).
10. Remove assemblies of the main and auxiliary fans of the cooling system (see the Section Check of Serviceability of Functioning, removal, service and installation of fans of the cooling system).
11. Take off belts of the drive of auxiliary units (see the Head Routine maintenance).
12. Take off a gas-distributing belt (see the Head Dvigatel).

13. Remove an automatic natyazhitel of a belt.

14. Remove an intermediate cogwheel No. 2.

15. By means of a special key of ST 499207100 remove a cogwheel of the left camshaft.

16. Remove the left (No. 2) section of a back cover of a gas-distributing belt.

17. Remove a basic arm of a natyazhitel.

18. Disconnect a heater hose from the water pump.

19. Turn out fixing bolts and remove the water pump.

1. Make sure of smoothness of rotation of the bearing of pump assembly.
2. Estimate a condition of a driving wheel of the pump.

3. Rotating a driving wheel, by means of the dial measuring instrument of plunger type determine the size of a radial side play of a rotor in the persistent direction.

4. Measure by the probe of lezviyny type the size of a gap of landing of a rotor in the case. Nominal rate of 0.5 ÷ 0.7 mm Limit admissible value: 1.0 mm

5. Compare results of measurements to requirements of Specifications. In case of need make replacement of pump assembly.

1. Details of installation of the water pump are shown on an illustration.
2. Remove a radiator (see the Section Service, removal and installation of a radiator of the cooling system).
3. Take off a belt of the drive of auxiliary units (see the Head Routine maintenance).
4. Remove a forward cover of a gas-distributing chain (see the Head Dvigatel).
5. Remove a gas-distributing chain (see the Head Dvigatel).

6. Turn out fixing bolts and remove pump assembly.

1. Make sure of smoothness of rotation of the bearing of pump assembly.
2. Estimate a condition of a driving asterisk of the pump.

Installation is made upside-down. Bolts of fastening of the pump are tightened with effort of 6.4 Nanometers. Do not forget to replace sealing rings, - for the purpose of simplification of process of installation of the pump grease new sealing rings with cooling liquid.