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



Alternative versions of schemes of recovery repair of the engine

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

It is possible to select the following main schemes of carrying out capital repairs of the engine:

Repair and replacement of components - If the condition of the block and the main internal components of the engine in the course of survey is found in an individual order the satisfactory, most reasonable decision there will be a carrying out their service in an individual order. At the same time it is necessary to check carefully a condition of the block, a bent shaft and conrod and 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 of the reduced set of the block of the engine - the Reduced set includes the block of cylinders with already established in it by a bent shaft and conrod and piston groups. At the same time all bearings of a bent shaft are completed with new inserts, and their working gaps are precisely adjusted. Further such set is equipped additionally with the camshafts removed from the old engine, components of the valvate mechanism, a head of cylinders and hinged units without any global mechanical works.

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

Also the option of replacement of the engine assembled is possible. Many company service centers offer similar service on exchange base changing the become useless units on new or restored.

Before stopping the choice on any of the listed schemes of performance of capital repairs of the engine and to start acquisition of the corresponding replaceable components, consult with specialists of car service, representatives company service center of the company manufacturer of your car and more skilled motorists.