Nissan Maxima QX

since 1993 of release

Repair and car operation

Nissan Maxima QX
+ Nissan Maxima brand Cars
+ Maintenance instruction
+ Settings and routine maintenance
- Engine
   + SOHC Engines
   + DOHC Engines
   - General major maintenance of the engine
      General information
      Check of pressure of oil
      Check of kompressionny pressure in cylinders
      Diagnostics of a condition of the engine with use of the vacuum gage
      Alternative versions of schemes of regenerative repair of the engine
      Removal of the power unit from the car - preparation and precautionary measures
      Removal and engine installation
      Order of dismantling of the engine by its preparation for major maintenance
      Dismantling of a head of cylinders
      Cleaning and check of a condition of a head of cylinders
      Service of valves
      Assembly of a head of cylinders
      Removal of shatunno-piston assemblies
      Removal of a cranked shaft
      Cleaning of the block of the engine
      Check of a condition of the block
      Honingovaniye of mirrors of cylinders
      Check of a condition of components of shatunno-piston group
      Check of a condition of a cranked shaft
      Check of a condition and selection of loose leaves of radical and shatunny bearings of a cranked shaft
      Check of a condition of camshafts, pushers of valves and bearings
      Engine assembly order
      Installation of piston rings
      Installation of a cranked shaft and check of working gaps of radical bearings
      Installation of a back epiploon of a cranked shaft
      Installation of shatunno-piston assemblies and check of size of working gaps in shatunny bearings of a cranked shaft
      Trial start and engine running in after major maintenance
+ Systems of cooling, heating
+ Power supply system and release
+ engine Electric equipment
+ Control systems of the engine
+ Transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment


Cleaning of the block of the engine


1. Упершись a stupid drift to the region of a vyzhimny stopper, develop it in the landing nest under 90 °. After all jams will be developed, they will need to be taken from the engine by means of nippers.

2. Scratch out from an interfaced surface of the block all traces of a material of old laying, - try not to leave scratches and задиров.
3. Remove from the block of a cover of all radical bearings and take from the beds loose leaves of the last. At once mark the taken loose leaves by means of an adhesive tape on accessory to the bearing and a bed in it (the block or a cover), then put them aside.
4. Screw all carving caps of oil galleries. Caps can appear tightened very hardly up to that they should be drilled with the subsequent restoration of a carving in the block. At assembly of a cap are subject to replacement.
5. At strong external pollution of the engine it is necessary to deliver it in a car-care center workshop for steam cleaning or heat treatment.
6. After block return from a workshop once again carefully clean all oil openings and galleries - for this purpose special cylindrical brushes of a special form (ask in shops of automobile accessories) are issued. Wash out cavities and channels warm water, - continue washing until from the 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 protection them from corrosion. In the presence of access to a source of the compressed air use it for acceleration of process of drying of the block and a purge of remote cavities and channels.

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

7. At strong pollution or a zashlakovyvaniye of the block it is necessary to resort to shchetochny cleaning by hot water with soap. It is not necessary to try to save time at the expense of neglect care of cleaning of the block. Regardless of the chosen way, track care of pro-cleaning of remote cavities, channels and openings. In summary dry the block and grease the pierced surfaces with liquid oil for protection them from corrosion.

8. Banish all carving openings in the block a tap of the corresponding size for the purpose of providing a guarantee of compliance of indications of the indicator of a dinamometrichesky key to really developed efforts of a tightening of fixture at engine assembly. Whenever possible, blow then the openings banished by a tap the compressed air, having removed from them all small garbage and shaving. Having finished processing of openings, walk a lerka by a carving part of bolts of fastening of covers of bearings and heads of cylinders.

9. Establish to the place of a cover of radical bearings, having by hand tightened their fixture.

10. Grease sealing surfaces of new vyzhimny jams with hermetic of the Permatex No 1 type and establish them on the regular places in the block. Track perpendicularity of landing of jams, - it will be most correct to use a special opravka, however the face head of the suitable size which should rest only against an internal part of a face surface of a stopper, - not in a fillet can quite replace it.

11. Grease with not hardening hermetic of the Permatex No 2 type a carving part of new caps of oil galleries (alternatively wind them with a tape FUM). Screw caps on the regular places and tighten as it is possible more strongly.
12. If are not going to start at once engine assembly, place the block in a big plastic bag for protection of its pollution.