Service Infiniti QX4 since 1996 of release
1. Introduction
2. The maintenance instruction
3. Routine maintenance
4. The engine
4.1. Specifications
4.2. Check компрессионного pressure in cylinders
4.3. Diagnostics of a condition of the engine with vacuum gauge application
4.4. Removal and engine installation
4.5. Removal and installation of the inlet pipeline
4.6. Replacement of a belt of drive ГРМ
4.7. Removal, check of a condition and installation of a head of cylinders
4.8. Replacement of a forward epiploon of a cranked shaft
4.9. Removal, check of a condition and installation of components клапанного the mechanism
4.10. Replacement of epiploons of camshafts
4.11. Replacement of a back epiploon of a cranked shaft
4.12. Removal and pallet installation картера
4.13. Removal, service and installation of the oil pump
4.14. Alternative variants of schemes of regenerative repair of the engine
4.15. An order of dismantling of the engine by its preparation for major repairs
4.16. Dismantling and check of a condition of a head of cylinders and components клапанного the mechanism
4.17. Recommendations about service of valves
4.18. Assemblage of a head of cylinders
4.19. Removal of shatunno-piston assemblages
4.20. Removal of a cranked shaft
4.21. Cleaning of the block of the engine
4.22. Check of a condition of the block of the engine
4.23. Хонингование mirrors of cylinders
4.24. Check of a condition of components of shatunno-piston group
4.25. Check of a condition of a cranked shaft
4.26. Check of a condition and selection of loose leaves radical and шатунных bearings of a cranked shaft
4.27. An engine assembly order
4.28. Installation of piston rings
4.29. Installation of a cranked shaft and check of working backlashes of radical bearings
4.30. Installation of shatunno-piston assemblages and check of size of working backlashes in шатунных bearings of a cranked shaft
4.31. Trial start and обкатка the engine after major repairs
5. Cooling and heating systems
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


4.21. Cleaning of the block of the engine


  1. Remove assemblage of covers of radical bearings and take from the beds in covers and the block loose leaves of bearings. Mark loose leaves by means of an adhesive tape on conformity to the beds (№ the bearing, the block / a cover) and will put them aside.
  2. Scratch out from an interfaced surface of the block all traces of a material of an old lining. Try not to leave задиров.
  3. Remove from the block all covers and carving заглушки oil galleries. Заглушки are usually tightened very hardly, therefore, quite probably, they should be drilled with the subsequent restoration of a carving in an aperture. At block assemblage заглушки it is necessary to replace new.
  4. At strong external pollution of the engine it is necessary to deliver it in a workshop of car-care centre for steam cleaning or heat treatment.
  5. After return of the block from a workshop once again carefully clean all oil apertures and galleries - for this purpose special cylindrical brushes of the special form (ask in shops of automobile accessories) are issued. Wash out cavities and channels warm water, — continue washing until from an opposite side of the block pure water will not start to follow. Carefully dry up the block, then slightly grease all pierced surfaces with liquid oil for their protection against corrosion. In the presence of access to a source of compressed air take advantage of it for acceleration of process of drying of the block and a purge of remote cavities and channels.

At work with compressed air do not forget to put on goggles!

  1. At strong pollution or зашлаковывании the block it is necessary to resort to щеточной to cleaning by hot water with soap. It is not necessary to try to save time at the expense of the negligent relation to block cleaning. Without dependence from the chosen way, track carefulness of procleaning of remote cavities, channels and apertures. In summary dry the block and grease the pierced surfaces with liquid oil for their protection against corrosion.
  2. Banish all carving apertures in the block a tap of the corresponding size for the purpose of a guarantee of conformity of indications of the indicator динамометрического a key to really developed efforts of a tightening of fixture at engine assemblage. Whenever possible, blow then the banished apertures the compressed air, having removed from them all small dust and a shaving. Having finished processing of apertures, walk леркой by a carving part of bolts.
  3. Establish to the place of a cover of radical bearings, by hand having tightened their fixture.
  4. Grease with not stiffening hermetic a carving new заглушек and закупорьте them apertures of oil galleries. Track durability of a tightening заглушек.
  5. If be not going to start immediately engine assemblage, place the block in the big polyethylene package for protection of its pollution.

On page back
4.20. Removal of a cranked shaft
On the following page
4.22. Check of a condition of the block of the engine