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



Check of a state and replacement of support of a suspension bracket of the power unit

Support of a suspension bracket of the power unit extremely seldom need attention, however the damaged pillows have to be replaced without any delay in order to avoid increase of loadings and premature wear of components of the transmission line.


On the considered models the suspension bracket of the power unit is realized by means of four rubber-metal support. By means of the central forward and back support the block of the engine fastens to the bearing cross beam laid from below. The right support fastens to a forward cover of the GRM drive and a frame of the car. The left support serves for fastening on a frame of a transmission part of the unit.

CHECK

 PERFORMANCE ORDER

1. For check it is necessary to raise slightly the engine, having completely unloaded support.
2. The car also establish to Poddomkratta it on props. Hang out the unit from above on the winch or a beam.
3. Check pillows of support for existence of cracks, signs of hardening of rubber and its peeling from the central metal plugs.
4. Estimate side play size between assemblies of support and the power unit / frame of the car (as the lever use mount or the big screw-driver). In case of identification of a weak point lower the unit and tighten fixture of support.
5. Pillows in order to avoid destruction of rubber have to be processed by special protective structure.

REPLACEMENT

 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! Cock the parking brake, a front of the car and establish to a poddomkratta it on props. Remove protection of a case.


Forward and back support of the engine (central)

 PERFORMANCE ORDER

1. Get a cart jack under a transmission case as it is possible closer to a cross beam, - for the purpose of distribution of loading lay wooden whetstone between a head of a jack and a case. Cock a jack, having completely unloaded the corresponding support of a suspension bracket of the power unit.

2. Turn out through bolts of fastening of support to a cross beam.

3. Turn out fixing bolts and remove a cross beam from the car chassis.
4. Turn out through bolts of fastening of support to arms on the engine block. Remove support.
5. Installation is made upside-down.

Final tightening of fixture of support with the required effort has to be made only after lowering of the power unit in regular situation. You pass to performing procedures of a final stage of tightening of fixture.


Right support

 PERFORMANCE ORDER

1. Hang out the engine from above on the winch or a beam.

2. Remove the top arm and turn out a through bolt of a support.

3. Slightly raise the engine, then give nuts of fastening of a support to the lower arm of the engine. Remove a support.
4. Installation is made upside-down.

Final tightening of fixture of a support with the required effort has to be made only after lowering of the power unit in regular situation. You pass to performing procedures of a final stage of tightening of fixture.


Left support

 PERFORMANCE ORDER

1. Get a cart jack under a transmission case (not under the pallet, - models with AT), - for the purpose of distribution of loading lay wooden whetstone between a head of a jack and a case. Cock a jack, having completely unloaded the corresponding support of a suspension bracket of the power unit.

2. Remove assembly of the air cleaner with an inlet air duct (see the Head of the Power supply system and release). Turn out a through bolt of an arm of the left support of the power unit.

3. Slightly lower transmission and turn out bolts of fastening of a support to it. Remove assembly of a support.
4. Installation is made upside-down.

Final tightening of fixture of a support with the required effort has to be made only after lowering of the power unit in regular situation. You pass to performing procedures of a final stage of tightening of fixture.


Final stage of tightening of fixture of all support

 PERFORMANCE ORDER

For the purpose of the maximum extension of service life of rubber-metal support and decrease in level of noise and vibrations final tightening of fixture of support with the required effort has to be made after lowering of the power unit in regular situation (the car should be parked on the flat horizontal platform).

Carving part of fixture should be greased with special sealant for fixing of threaded connections. Track that rubber plugs were not twisted or displaced from the seats. If replacement more than one support was made, and also at installation of the power unit tightening of fixture of support has to be made in the following order:

a) Bolts of fastening of a cross beam;
b) Back support;
c) Forward support;
d) Left support;
e) Right support.