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



Removal of the power unit from the car - preparation and precautionary measures

Before starting dismantle of the engine for the purpose of performance of its general or capital repairs, it is necessary to take some preparatory steps.

Presence of competently equipped worker of the platform is of extremely great importance. The platform has to be rather spacious for placement on it of the car, a strong workbench / the assembly stand, and also necessary materials and the equipment. An optimal variant is the big garage or the covered workshop. As a last resort just flat platform with an asphalt or concrete covering will approach.

It is necessary to take care also of the place equipment for storage of the components removed from the engine, the tool and other materials. Best of all the easy folding rack with rather wide regiments will be suitable for this purpose.

Before starting dismantle of the power unit, clean a motor compartment and the external surface of the engine that will help to keep the used tool with purity and an order.

Necessary condition of successful work is also existence of the winch, the And-shaped frame or other suitable lifting equipment. Track that the elevator and a rigging corresponded according to the load-lifting characteristics to the total mass of the power unit (the engine with transmission). Do not forget about need of strict observance of requirements of safety regulations.

If extraction of the engine is made by the amateur mechanic for the first time, it is necessary to get support of more skilled companion. In time the given council will allow to save time and to minimize risk of getting injured or damage of the components/equipment. In the course of extraction of the unit from the car there is a set of situations when separate procedures have to be performed at the same time that it is often very difficult to make by forces of one person.

Try to plan all moments of the forthcoming work in advance. Prepare necessary tools and the equipment. To number of the special devices significantly facilitating performance of the forthcoming works and considerably increasing the level of their safety, a powerful cart jack with the hydraulic drive, the set of wrenches and replaceable face heads with suitable (it is desirable ratchet) the drive, pair of strong wooden blocks, and also enough rags and solvent for removal of traces of fuel, oil and cooling liquid belong. At absence in private use of the lifting equipment before hiring the winch, try to perform beforehand all necessary preparatory work for the purpose of the maximum reduction of term of rent, and, therefore, and the material inputs connected with it.

Prepare for refusal of use of the car for the period of carrying out repair work. Performance of a part of the procedures demanding high qualification of personnel and use of the special equipment should be charged to specialists of car service. Remember that automobile repair shops usually have very busy schedule of loading, and therefore it will be reasonable to see to it and agree about terms of implementation of your order in advance.

Work without hurrying, in an organized manner, try not to violate elementary safety regulations!