Nissan Maxima QX

since 1993 release

Repair and operation of the car

Nissan Maxima QX
+ Cars of the Nissan Maxima brand
+ Maintenance instruction
+ Settings and routine maintenance
- Engine
   + SOHC engines
   + DOHC engines
   - General capital repairs of the engine
      General information
      Check of pressure of oil
      Check of compression pressure in cylinders
      Diagnostics of a condition of the engine with use of the vacuum gage
      Alternative versions of schemes of recovery repair of the engine
      Removal of the power unit from the car - preparation and precautionary measures
      Removal and installation of the engine
      Order of dismantling of the engine by preparation it to capital repairs
      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 conrod and piston assemblies
      Removal of a bent 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 conrod and piston group
      Check of a condition of a bent shaft
      Check of a state and selection of inserts of radical and conrod bearings of a bent shaft
      Check of a condition of camshafts, pushers of valves and bearings
      Engine assembly order
      Installation of piston rings
      Installation of a bent shaft and check of working gaps of radical bearings
      Installation of a back epiploon of a bent shaft
      Installation of conrod and piston assemblies and check of size of working gaps in conrod bearings of a bent shaft
      Trial start and running in of the engine after capital repairs
+ Cooling systems, 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 release stopper, develop it in the landing nest under 90 °. After all traffic jams are developed, they will be rather simple to be taken from the engine by means of nippers.

2. Scratch out all traces of material of old laying from the interfaced surface of the block, - try not to leave scratches and zadir.
3. Uncover with the block of all radical bearings and take inserts of the last from the beds. At once mark the taken inserts 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 be 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 bring him in a workshop of car service for steam cleaning or heat treatment.
6. After return of the block from a workshop once again carefully clean all oil openings and galleries - for this purpose special cylindrical brushes of a special form are issued (ask in shops of automobile accessories). Wash out cavities and channels warm water, - continue washing until from the opposite side of the block clear water does not begin to follow. Carefully dry up the block, then slightly oil all pierced surfaces liquid for protection them from corrosion. In the presence of access to a source of compressed air use it for acceleration of process of drying of the block and a purge of remote cavities and channels.

During the work with 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 brush 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 a clearing of remote cavities, channels and openings. In conclusion dry the block and oil the pierced surfaces liquid 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 dynamometer key to really developed efforts of tightening of fixture at assembly of the engine. Whenever possible, blow then the openings banished by a tap 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 release traffic jams with sealant like Permatex No 1 and install them on the regular places in the block. Track perpendicularity of landing of traffic jams, - it will be most correct to use a special mandrel, however the face head of the suitable size which has to rest only against an internal part of a face surface of a stopper can quite replace it, - not in a fillet.

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