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 information
      Preparatory actions and the list of repair procedures which can be executed without extraction of the engine from the car
      Reduction of the piston of the first cylinder in the provision of the top dead point (TDP)
      Removal and installation of covers of heads of cylinders
      Check and adjustment of gaps of valves
      Replacement of maslootrazhatelny caps and valvate springs with plates
      Removal, check of a state and installation of a chain and asterisks of the GRM drive
      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 bent shaft
      Replacement of a forward epiploon of a bent shaft
      Removal and installation of the pallet of a case of the engine
      Removal, check of a state and installation of the oil pump
      Removal and installation of a flywheel / driving disk
      Replacement of a back epiploon of a bent shaft
      Check of a state and replacement of support of a suspension bracket of the power unit
   + General capital repairs of the engine
+ 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 and installation of covers of heads of cylinders

REMOVAL

 PERFORMANCE ORDER

Disconnect a negative wire from the battery.

If the stereosystem established on the car is equipped with a security code before disconnecting the battery make sure that you have the correct combination for input of the audio system in action!


Cover of a forward head of cylinders

 PERFORMANCE ORDER

1. Remove ventilating hoses and a cover of bobbin assemblies.

2. Remove ignition coils (see the Head Elektrooborudovaniye of the engine).

3. Working as it should be the return shown on an illustration, turn out bolts of fastening of a cover of a head of cylinders.

4. Uncover.

For office to the "stuck" cover tap it the hammer through wooden whetstone. Do not hook a cover the lever under the interfaced surface at all!


Cover of a back head of cylinders

 PERFORMANCE ORDER

1. Remove the top section of the inlet pipeline (the delivery camera) (see the Section Removal and installation of the inlet pipeline).
2. Remove from a back cover of assembly of coils of ignition (see the Head Elektrooborudovaniye of the engine).
3. Having released fixing collars, disconnect ventilating hoses from a cover.
4. Disconnect a hose of PCV and the electrical wiring preventing removal of a cover.

5. Working as it should be the return shown on an illustration, turn out bolts of fastening of a cover of a head of cylinders.

6. Uncover.

For office to the "stuck" cover tap it the hammer through wooden whetstone. Do not hook a cover the lever under the interfaced surface at all!

INSTALLATION

Both covers

 PERFORMANCE ORDER

1. The interfaced surfaces of heads of cylinders and their covers have to be absolutely pure and dry. By means of a scraper remove all traces of old sealant and fragments of the destroyed laying, then wipe surfaces with the rags moistened in acetone. Presence on the interfaced surfaces of traces of oil can lead to development of leaks.
2. In case of need banish a carving of fixing bolts a suitable lerka, restoring the damaged rounds and deleting a rust and traces of old sealant. A tap of the corresponding size banish carving openings in a head.

3. Check a condition of the heads of cylinders of sealing washers of the directing tubes of spark plugs put in covers, in case of need make replacement.

4. Fill a flute on the interfaced cover surface with RTV sealant, also impose sealant in corners of joints of a cover with a cover of forward bearings of camshafts. Lay new sealing laying over sealant. Let's sealant dry up and record a little thereby laying on a cover.
5. Accurately press a cover to a head of cylinders and screw fixing bolts.

6. Moving in strictly certain order, in three-four stages tighten bolts with the required effort.

7. Further assembly is made as it should be, the return to an order of dismantle of components.
8. Start the engine and check it for existence of signs of development of leaks.