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

Service of valves

In view of complexity of kind of work and need of use of the special equipment, performance of service of valves, the directing plugs and saddles it will be most correct to charge them to personnel of car service.

Such procedures as dismantling of a head, primary cleaning and check of a condition of components of the valvate mechanism can be made by own forces of the owner of the car. At the same time rather fair idea of the volume of subjects to performance of work usually is formed and the approximate list of necessary replaceable components can be prepared. Then it is necessary to collect and deliver a head for professional service in a workshop of car service.

Experts of a workshop will remove valves and valvate springs from a head and will make necessary recovery repair or replacement of worn-out components (valves, their saddles, the directing plugs, springs, plates of springs and crackers of cutting locks). Replacement of maslootrazhatelny caps is without fail made. After assembly of components the adjusting height of valvate springs will be checked. In case of need experts will make a head pro-point for the purpose of restoration of planeness of its interfaced surfaces.

After completion of professional repair of a head its state usually corresponds to a condition of new. Before installation on the engine be not too lazy to clean once again carefully a head, having completely removed metal sawdust, traces of an abrasive and other small production garbage from all her cavities and channels. Blow all channels and openings compressed air (do not forget to put on goggles).