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
 












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4.4. Removal and engine installation

In order to avoid unauthorized operation of safety cushions start to work not less than 10 minutes later after shutdown of the storage battery.


Removal of the engine is made after preliminary separation of transmission from it.


Scheme of the organization of a suspension bracket of the power unit

 

 PERFORMANCE ORDER

  1. Switch off ignition.
  2. Open a cowl.
  3. Disconnect a negative wire from the battery.
  4. Carefully mark all subjects to a detachment lines of communication (electroconducting plaits, vacuum and air hoses, driving cables, fuel lines and tubes of an okhladitelny path).
  5. Dump pressure in a power supply system (see. Check of kompressionny pressure in cylinders).
  6. Remove a cowl.
  7. Empty system of cooling and remove a radiator (see. Head of System of cooling and heating).
  8. Remove belts of a drive of auxiliary units, the generator and assembly of the fan of system of cooling (see. Head of System of cooling and heating).
  1. Remove the steering pump and the To/in compressor — without disconnecting hydraulic / refrigerator lines, shift components aside and fix them a wire.
  1. Make a detachment of all disturbing to performance of procedure of lines of communication.
  2. To Poddomkratta the car also establish it on props (see an illustration the Scheme of an institution of props for car fixing in the lifted situation). Remove protection of a case.
  3. Disconnect from a final collector of the engine reception pipes of system of production of the fulfilled gases.
  4. Disconnect from transmission of the line of cooling of ATF, driving drafts and electroconducting. Take щуп measurements of level of ATF.
  5. Mark the provision of a connecting flange of the driveshaft of rather main transfer of the back bridge. Also mark heads of fixing bolts — at assembly they should be rolled strictly on the former places. Turn out fixing bolts and remove the driveshaft. At once закупорьте an opening under shaft installation in transmission in order to avoid hit in dirt.
  6. Remove a starter.
  7. Turn out bolts of fastening of the hydrotransformer to a driving disk. Prop up transmission by a telezhechny jack and remove bearing beam laid under it. Disconnect from the engine block a basic arm of transmission.
  8. Will hang out the engine from above on the winch.
  9. Turn out fixing bolts, carefully separate transmission from the engine and take it from under the car (see. Head Transmission line).
  10. Give nuts of fastening of support of an engine mount to a frame (see an illustration the Scheme of the organization of a suspension bracket of the power unit).
  11. Lift the engine and take it from the car.


Installation

Installation is made as it should be, the return to an order of dismantle of components — track, that all fixture was tightened with demanded effort.

Having finished installation, make necessary adjustments of driving cables and levels of working liquids.


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4.3. Diagnostics of a condition of the engine with use of the vacuum gage
on the following page»
4.5. Removal and installation of the inlet pipeline