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
+ Systems of cooling, heating
+ Power supply system and release
+ engine Electric equipment
+ Control systems of the engine
+ Transmission
- Coupling and power shafts
   General information
   Coupling - the general information and check of a condition of components
   Removal and installation of the main cylinder of coupling
   Removal and installation of the executive cylinder of coupling
   Air removal from a hydraulic path of a drive of switching off of coupling
   Removal, check of a condition and installation of components of assembly of coupling
   Removal, check of a condition and installation of the vyzhimny bearing and lever of switching off of coupling
   Adjustment of a pedal of coupling
   Check of serviceability of functioning and replacement of the sensor switch of disconnection of a chain of a starter
   Power shafts - the general information and condition check
   Removal and installation of power shafts
   Check of a condition and replacement of assembly of the basic bearing
   Replacement of protective covers and check of a condition of CV JOINTS
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment





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Coupling - the general information and check of a condition of components

Components of assembly of coupling

1 — the Nut (8 ÷ 11 Nanometer)
2 — the Main cylinder
3 — the Nut (16 ÷ 22 Nanometer)
4 — the Bolt of fastening of a basic arm of a pedal
5 — the Bolt of fastening of an emphasis of a pedal
6 — the Sensor switch of disconnection of a chain of a starter (12 ÷ 15 Nanometer)
7 — the Nut of a fixing bolt (16 ÷ 22 Nanometer)
8 — the Returnable spring
9 — the Pin
10 — a pedal Axis

11 — Shplint
12 — a coupling pedal
13 — the Executive cylinder
14 — the Conducted disk
15 — Assembly of a basket of coupling (press a disk)
16 — the Bolt (30 ÷ 40 Nanometer)
17 — the Air gate (6 ÷ 10 Nanometer)
18 — the Lever of switching off of coupling
19 — the Hydraulic hose
20 — Vyzhimna the bearing


On all models equipped with RKPP, one-disk coupling of dry type with a diafragmenny spring is used. The nave of a frictional (conducted) disk of coupling is equipped with the longitudinal shlitsa entering into gearing with shlitsa of a pin of primary shaft of transmission. Frictional and press disks of coupling keep in contact with each other at the expense of the effort developed by a diafragmenny spring of a press disk.

Switching off of coupling is made in the hydraulic way. The drive of switching off consists of a pedal of the coupling equipped with the tank of the main hydraulic cylinder, connecting lines and the executive cylinder affecting the lever of switching off of coupling, and the vyzhimny bearing.

When squeezing pedal in a path of system hydraulic pressure, resultants which influence rises is put by the external end of the lever of switching off of coupling. At lever turn, fingers of its shaft rest in vyzhimny the bearing which, in turn, being displaced, nestles on petals of a diafragmenny spring of a press disk in a coupling basket. Being curved, the spring interrupts contact of press and conducted disks, releasing the last.

At coupling service, besides replacement of the components having obvious mechanical damages, it is necessary to make some primary checks (it is supposed that the transmission is in good repair):

a) First of all it is necessary to make sure of correctness of adjustment of a free wheeling and heights of installation of a pedal of coupling, - in case of need make the corresponding adjustments (see. Section Adjustment of a pedal of coupling).
b) Estimate liquid level in the tank of the main hydraulic cylinder of coupling (see. Head of Control and routine maintenance). In case of need make adjustment, having added demanded amount of hydraulic liquid, and attentively examine system on existence of signs of leaks (see. Sections Removal and installation of the main cylinder of coupling and Removal and installation of the executive cylinder of coupling). At a devastation of the tank of the main cylinder it is necessary to remove from a hydraulic path air jams (see. The section air Removal from a hydraulic path of a drive of switching off of coupling) then to check serviceability of functioning of coupling;
c) For an assessment of time of switching of coupling start the engine on normal turns of idling. Make sure that neutral transfer is included and release a coupling pedal. Now squeeze out a pedal of coupling and, having waited for some seconds, include a reverse gear. Switching should not lead to emergence of a gnash and other extraneous noise, with high degree of probability indicating malfunction of a conducted disk or assembly of a basket of coupling;
d) For check of completeness of switching off of coupling cock the parking brake and start the engine. Holding a coupling pedal at height about 13 mm over a floor, попереключайте a box between the first and back transfers. Existence of hindrances when switching the lever speaks about malfunction of components of the mechanism of switching off. Estimate size of a course of a pusher of the executive cylinder of coupling. At completely squeezed out pedal the pusher should be put forward on appreciable size, otherwise it is necessary to check level of hydraulic liquid in the main cylinder;
e) Make visual check of a condition of axial plugs in the top part of a pedal of coupling. Make sure of lack of signs of jamming and excessive люфта axes;
f) Having appropriated for the car, make sure of durability of landing of the lever of switching off of coupling on a spherical finger of a spherical support.