Service Infiniti QX4 since 1996 of release
1. Introduction
2. The maintenance instruction
3. Routine maintenance
4. The engine
5. Cooling and heating systems
5.1. Specifications
5.2. Antifreeze - the general data
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 an automatic air conditioning – a design and a functioning principle
5.10. A design of a refrigerator path of a central air of air
5.11. Compressor K/V, - the general information and a functioning principle
5.12. The Receiver-dehumidifier - the general information and service
5.13. Check of serviceability of functioning and service of systems of heating and an air conditioning
5.14. Diagnostics of a central air of air
6. Power supply systems and managements
7. Start and charge systems
8. A transmissionnaja line
9. Brake system
10. A suspension bracket and a steering
11. A body
12. An 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 full jamming of the engine as a result of an overheat.

At failure of bearings of a shaft of the pump in an engine operating time in its forward part there can be a howling sound which should not be confused to the whistle published приводным by a belt at easing of effort of its tension. Deterioration of the bearing can be revealed on presence люфта at rocking of 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 can be used both new, and the restored assemblage.


  1. Empty cooling system (Routine maintenance see the Head), — if mix replacement was made recently, keep it for the further use (Antifreeze - the general data, the Prevention see).
  2. Remove top both bottom радиаторный 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 drive ГРМ (Replacement of a belt of drive ГРМ see).
  6. Turn out fixing bolts and remove assemblage of the water pump (see an illustration of the Detail of installation of the water pump), — try not to admit hits of a cooling liquid on газораспределительный a belt.
  7. The water pump is not subject to regenerative repair and in case of failure should be replaced in gathering.
  1. Attentively examine the pump case on presence of traces of leaks and signs of development of corrosion. Check up freedom of rotation of the pump and estimate sizes radial and axial люфтов a shaft.
  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 drive ГРМ make sure that the collar of fastening of a hose does not rest against it.
  2. In summary start the engine and check up cooling system on presence 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