Infiniti QX4 service since 1996 of release
1. Introduction
2. Maintenance instruction
3. Routine maintenance
4. Engine
4.1. Specifications
4.2. Check of kompressionny pressure in cylinders
4.3. Diagnostics of a condition of the engine with use of the vacuum gage
4.4. Removal and engine installation
4.5. Removal and installation of the inlet pipeline
4.6. Replacement of a belt of a drive of GRM
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 of the klapanny mechanism
4.10. Replacement of epiploons of camshafts
4.11. Replacement of a back epiploon of a cranked shaft
4.12. Removal and installation of the pallet of a case
4.13. Removal, service and installation of the oil pump
4.14. Alternative versions of schemes of regenerative repair of the engine
4.15. An order of dismantling of the engine by its preparation for major maintenance
4.16. Dismantling and check of a condition of a head of cylinders and components of the klapanny mechanism
4.17. Recommendations about service of valves
4.18. Assembly of a head of cylinders
4.19. Removal of shatunno-piston assemblies
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. Honingovaniye of 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 of radical and shatunny bearings of a cranked shaft
4.27. Engine assembly order
4.28. Installation of piston rings
4.29. Installation of a cranked shaft and check of working gaps of radical bearings
4.30. Installation of shatunno-piston assemblies and check of size of working gaps in shatunny bearings of a cranked shaft
4.31. Trial start and an engine running in after major maintenance
5. Cooling and heating systems
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
 












4-14-alternativnye-varianty-skhem-vosstanovitelnogo-remonta-dvigatelya.html

4.14. Alternative versions of schemes of regenerative repair of the engine

During independent performance of major maintenance of the engine the reader will face the need of a choice of the scheme of actions defining total amount and nature of the forthcoming work most acceptable for it. Need of replacement of the block of the engine, shatunno-piston groups and a cranked shaft is defined by a set of various factors the main thing from which is the block condition. To number of the other parameters defining a choice of structure of the forthcoming works, temporary and material inputs, existence of necessary spare parts, and also own qualification of the owner of the car, as mechanics belong.

It is possible to allocate the following main schemes of carrying out major maintenance of the engine:

Repair and replacement of components in an individual order. If the condition of the block and the main internal components of the engine in the course of survey is found the satisfactory, most reasonable decision there will be a carrying out their service in an individual order. Thus it is necessary to check carefully a condition of the block, a cranked shaft and shatunno-piston groups. Even at very insignificant degree of wear of the block, a mirror of its cylinders without fail are subject to a honingovaniye.

Use ремкомплекта cranked shaft. The set consists their pierced cranked shaft and a set of repair rods with the pistons established on them. Also piston rings and loose leaves of bearings are applied. The set can be intended for installation as in the block with cylinders of the standard size, and in the pierced assembly.

Use of the reduced set of the block of the engine. The reduced set includes the block of cylinders with already established in it cranked shaft and shatunno-piston groups. Thus all bearings of a cranked shaft are completed with new loose leaves, and their working gaps are precisely adjusted. Further such set is equipped additionally with the camshafts removed from the old engine, components of the klapanny mechanism, a head of cylinders and hinged units without any global mechanical works.

Use of an expanded set of the block of the engine. The expanded set represents the reduced set, plus the oil pump, the case pallet, a head of cylinders with a cover, a camshaft, components of the klapanny mechanism and GRM drive (cogwheels with a gas-distributing belt) with covers. All provided bearings, epiploons and laying are new, gaps are adjusted. It is necessary to connect only to the block the inlet pipeline with a final collector and hinged units.

The option of replacement of the engine assembled is possible also. Many firm HUNDRED offer similar service on exchange base changing the become unfit for use units on new or restored.

Before stopping the choice on any of the listed schemes of performance of major maintenance of the engine and to start acquisition of the corresponding replaceable components, consult with specialists of car-care center and more skilled motorists.


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4.13. Removal, service and installation of the oil pump
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4.15. An order of dismantling of the engine by its preparation for major maintenance