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
   - DOHC 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
      Check and adjustment of gaps of valves
      Replacement of maslootrazhatelny caps and klapanny springs with plates
      Removal, check of a condition and installation of a chain and asterisks 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
   + 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 the oil pump

REMOVAL

 PERFORMANCE ORDER

1. Remove the main chain of a drive of GRM with asterisks (see. Section Removal, check of a condition and installation of a chain and asterisks of a drive of GRM).

In case of need remove also assembly натяжителя / directing secondary chain, having provided with that adequate access to the pump.

2. Remove both sections of the pallet of a case of the engine (see. Section Removal and installation of the pallet of a case of the engine) and maslozaborny tube.

3. Turn out bolts of fastening of the oil pump to a forward wall of the power unit.

4. Having accurately hooked, raise a casing of the pump and carefully remove it from directing pins on the block.

CHECK

 PERFORMANCE ORDER

1. By means of a big screw-driver with a crosswise sting turn out screws of fastening of a forward cover of the oil pump.

2. Wash out internal components of assembly in solvent and attentively examine on existence of signs of excessive wear and mechanical damages.

3. Turn out a cap and take from the pump case components of the reduktsionny valve. Estimate a condition of working surfaces of the valve and its springs. In case of identification of defective components, replace all set.

1 — the Cap
2 — the Washer
3 — the External spring
4 — the Internal spring
5 — the Valve
6 — the Casing of the oil pump

4. With the help щупа lezviyny type make measurement of working gaps of gear wheels of the oil pump. Compare results of measurements to requirements of Specifications. During this check the following parameters should be defined:

a) A gap between teeths of internal and external gear wheels;
b) A gap between a forming surface of an external gear wheel and the case;
c) Axial люфт landings of an internal gear wheel
d) Axial люфт landings of an external gear wheel;
e) A radial gap of landing of an acting stupichny part of an internal gear wheel in the pump case (it is calculated by subtraction of results of two measurements.
At an exit any of parameters out of limits of an admissible range assembly of the pump is subject to replacement.

5. Fill internal cavities of the pump technical vaseline. Enclose in the case internal components, establish a cover and strongly tighten screws of its fastening. Establish into place carburetors of the reduktsionny valve, strongly tighten a cap.

INSTALLATION

 PERFORMANCE ORDER

Assembly is made as it should be the return to a dismantle order. Do not forget to replace all sealing laying. Track. That лыски in a stupichny part of an internal gear wheel of the pump correctly entered into gearing with reciprocal лысками on a pin of a cranked shaft. All fixture tighten with demanded effort.

Before establishing the case pallet, replace sealing rings in a casing of the pump and the engine block.