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
      General information
      Preparatory actions and the list of repair procedures which can be executed without engine extraction from the car
      Reduction of the piston of the first cylinder in the provision of the top dead point (VMT)
      Removal and installation of covers of heads of cylinders
      Removal, check of a condition and installation of assembly of yokes
      Replacement of maslootrazhatelny caps and klapanny springs with plates
      Removal and installation of a gas-distributing belt and cogwheels of a drive of GRM
      Removal and installation of camshafts and pushers of valves
      Removal and installation of the inlet pipeline
      Removal and installation of final collectors
      Removal and installation of heads of cylinders
      Removal and installation of a pulley of a cranked shaft
      Replacement of a forward epiploon of a cranked shaft
      Removal and installation of the pallet of a case of the engine
      Removal, check of a condition and installation of the oil pump
      Removal and flywheel installation / driving disk
      Replacement of a back epiploon of a cranked shaft
      Check of a condition and replacement of support of a suspension bracket of the power unit
   + DOHC Engines
   + General major maintenance of the engine
+ 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





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Removal, check of a condition and installation of assembly of yokes

REMOVAL

 PERFORMANCE ORDER

1. Remove covers of heads of cylinders (see. Section Removal and installation of covers of heads of cylinders).

2. Moving from the ends to the middle, in two-three receptions weaken bolts of fastening of axes of yokes.

Part of valves when weakening fixture of axes of yokes will remain open in view of what axes will be exposed to influence of the efforts developed by klapanny springs, and the sharp otpuskaniye of fixing bolts can lead to deformation of components.

3. Before extraction of assemblies of yokes from their engine it is necessary to mark accurately.

4. Turn out the weakened fixing bolts and serially take from a head of assembly of axes with yokes. Lay the removed assemblies on a workbench, having arranged them the same as they were established in the engine. At assembly all axes should be established strictly on former places in the heads of cylinders. Pay attention that axes with deep samples are established from the inlet pipeline, with small - from final collectors.

CHECK

 PERFORMANCE ORDER

1. Having removed assemblies of yokes, it will be reasonable to disassemble them for the purpose of more detailed studying of a condition of components. Carefully clear details and check them on existence of signs of wear and damages. Estimate a condition of surfaces of yokes contacting to a camshaft. Check on existence задиров and signs of excessive wear of a surface of landing of yokes on axes, and also walls of landing openings of yokes. Defective components are subject to replacement.

2. Measure external diameters of necks of axes of yokes. Write down results of measurements and compare them to requirements of Specifications.

3. Measure internal diameters of landing openings of yokes. Also compare results to requirements of Specifications.

4. By subtraction of results of the first measurements of results the second define size of landing gaps of yokes on axes. Compare results of calculations to requirements of Specifications. In case of need replace excessively worn-out components.

INSTALLATION

 PERFORMANCE ORDER

Installation is made upside-down. The tightening of bolts of fastening of axes of yokes with demanded effort should be made in some stages in the direction from the ends of assemblies to their centers.