Replacement of the water pump. Infiniti QX4 (since 1996 of release)
Infiniti QX4 service since 1996 of release
1. Introduction
2. Maintenance instruction
3. Routine maintenance
4. Engine
5. Cooling and heating systems
5.1. Specifications
5.2. Antifreeze - general information
5.3. Service of system of cooling
5.4. Removal, installation and check of serviceability of functioning of the thermostat
5.5. Removal, regenerative repair and installation of a radiator of system of cooling
5.6. Replacement of the water pump
5.7. Removal and installation of the fan of system of cooling
5.8. Air lines of distribution of air submitted to salon
5.9. System of automatic air conditioning – a design and a functioning principle
5.10. Design of a refrigerator path of central air of air
5.11. The To/in compressor, - the general information and a functioning principle
5.12. A receiver dehumidifier - the general information and service
5.13. Check of serviceability of functioning and service of systems of heating and air conditioning
5.14. Diagnostics of central air of air
6. Power supply systems and managements
7. Start and charge systems
8. Transmission line
9. Brake system
10. Suspension bracket and steering
11. Body
12. Electric equipment



5.6. Replacement of the water pump

Details of installation of the water pump


Refusal of functioning of the water pump is capable to cause the most serious consequences, up to complete jamming of the engine as a result of an overheat.

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 at weakening of effort of its tension. Wear of the bearing can be revealed on existence люфта when rocking a pulley of the pump (do not forget to switch off before the engine).

At failure the water pump is subject to replacement without fail. As the replaceable it can be used both new, and the restored assembly.


  1. Empty cooling system (see. Head Routine maintenance) — if replacement of a mix was made recently, keep it for further use (see. Antifreeze - general information, the Prevention).
  2. Remove top and bottom radiatorny hoses and a casing of the fan of system of cooling.
  3. Remove belts of a drive of auxiliary units.
  4. Remove a pulley of the water pump.
  5. Remove a pulley of a cranked shaft both the top and bottom section of a forward cover of a drive of GRM (see. Replacement of a belt of a drive of GRM).
  6. Turn out fixing bolts and remove assembly of the water pump (see an illustration of the Detail of installation of the water pump) — try not to allow hits of cooling liquid on a gas-distributing belt.
  7. The water pump is not subject to regenerative repair and in case of failure should be replaced assembled.
  1. Attentively examine the pump case on existence of traces of leaks and signs of development of corrosion. Check freedom of rotation of the pump and estimate sizes radial and axial люфтов in bulk.
  1. Installation is made upside-down — track correctness of connection of hoses and reliability of fastening by their collars on unions. In order to avoid deformation of a cover of a drive of GRM make sure that the collar of fastening of a hose does not rest against it.
  2. In summary start the engine and check cooling system on existence of signs of development of leaks.

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5.5. Removal, regenerative repair and installation of a radiator of system of cooling
on the following page»
5.7. Removal and installation of the fan of system of cooling