8.1.4. Malfunctions of coupling
POSSIBLE REASON
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ELIMINATION METHOD
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The pedal of coupling does not come back to a starting position (on cars with a coupling hydraulic actuator)
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Hit of air in a hydraulic actuator, level of working liquid is lower than norm |
Restore the level of working liquid to normal, remove air from a hydraulic actuator.
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Holding strap of pistons in the main or working cylinder |
Replace faulty details, remove air from a hydraulic actuator.
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Leak of working liquid in the main or working cylinder | |
The same (on cars with the mechanical drive of coupling)
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Jamming of a cable of the drive of coupling. The self-regulation mechanism (is faulty at its existence) |
Replace a cable.
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The same (all cars)
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The returnable spring (is faulty at its existence) |
Replace a returnable spring.
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Jamming of a pedal of coupling |
To clear and grease a pedal axis. If necessary to replace the plug.
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Jamming of a fork of switching off of coupling on a coupling case |
To clear hinged knot of a fork. To execute necessary repair.
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Adhesion or the increased friction between details in a coupling basket |
To clear and grease places of sliding. To execute necessary repair.
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The raised side play of the bearing of switching off of coupling on the directing plug, a bearing holding strap |
To replace the directing plug and the bearing of switching off of coupling.
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Breakage of a diaphragm spring of a press disk |
To replace a press disk assembled.
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Too "rigid" pedal of coupling (on cars with the mechanical drive of coupling)
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Jamming of a cable of the drive of coupling. Corrosion of a cable in a cover. The self-regulation mechanism (is faulty at its existence) |
To replace a drive cable.
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Jamming of a fork of switching off of coupling on a coupling case |
To clear and grease hinged connection. To replace the plug.
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The same (on cars with mechanical transmission, only for transmission 020)
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Adhesion or the increased friction between a pusher and a press disk |
To grease contact surfaces with a thin layer of G 000 100 lubricant. To grease with a thin layer a pusher.
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The same (all cars)
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Jamming of a pedal of coupling. (Before check disconnect a pusher of the main cylinder or a cable of the drive from a pedal) |
To clear and grease hinged connections. To replace the plug.
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Jamming of a peripheral spring. Defect of a peripheral spring |
To clear and grease hinged connections. To replace a spring.
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The increased elasticity of a returnable spring (in the presence). The improper returnable spring is established |
To establish a returnable spring of the necessary type.
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Increase of the effort necessary for switching off of coupling because of wear of frictional slips |
Inform the customer: the effort of switching off of coupling increases at increase in wear.
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Adhesion or the increased friction between details in a coupling basket |
If the distance from heads of rivets to a surface of a slip exceeds 0,1 mm, then replace the conducted clutch plate.
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The raised side play of the bearing of switching off of coupling on the directing plug, a bearing holding strap |
To clear and grease the interfaced details. To replace the worn-out directing plugs.
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Wear of contact surfaces of the bearing of switching off of coupling and fork of switching off of coupling |
To replace worn-out details.
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On a press disk improper springs are established |
To establish springs with the corresponding number according to the catalog.
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Jamming of a nave of the conducted clutch plate on vents of a main shaft of the check point |
To check existence of defects on a nave of a disk and vents of a shaft (zadir). If necessary to replace the conducted disk. To clear vents of a nave and a vent of a main shaft of corrosion and the remains of lubricant. To grease with a thin layer of G 000 100 lubricant of a vent of a main shaft. Remove excess of lubricant, moving the conducted disk on vents of a main shaft to both parties.
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The increased noise at coupling switching off (on cars with the mechanical drive of coupling)
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Noise of transmission get to salon through a coupling drive cable |
To replace antinoise details of a body, or to strengthen them additional antinoise protection.
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Jamming of a cable of the drive of coupling (sticking, the increased friction, unbraiding) |
To replace a drive cable.
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At completely squeezed out coupling pedal the diaphragm spring of a press disk touches the conducted clutch plate (the free wheeling of a pedal of coupling is less than norm) |
To adjust a free wheeling of a pedal of coupling.
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The self-regulation mechanism (is faulty at its existence) |
To replace a drive cable.
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Lubricant of the rubbing surfaces of a press clutch plate and a diaphragm spring is necessary |
To grease contact surfaces with a thin layer of G 000 100 lubricant. To replace worn-out details.
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The same (on cars with mechanical transmission, only for transmission 020)
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It is necessary to grease the rubbing surfaces, a pusher and press a clutch plate |
To grease the rubbing surfaces with a thin layer of G 000 100 lubricant.
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The same (on all cars)
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Jamming of a pedal of coupling, the pedal axis is bent |
To clear and grease a pedal axis. If necessary to replace the plug.
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Jamming of an axis of a peripheral spring because of the increased friction, coaxiality violations |
To clear and grease an axis.
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The increased noise from a returnable spring (if it is provided by a design) |
To grease a spring axis.
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Defect of the bearing of switching off of coupling or holder of the bearing, wear of a contact surface (buckling) |
Usually is eliminated with replacement of the bearing. To replace the damaged directing plugs.
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Defect of contact surfaces of a press disk (bend or breakage of edges of petals of a diaphragm press spring). Violation of centering of the bearing of switching off of coupling |
To replace press a disk. To check a condition of the bearing of switching off of coupling and a holder of the bearing. If necessary replace. To check a condition of the aligning plugs.
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Wear of directing crankshaft bearing (if is available), not coaxiality of installation of the engine and the check point |
To replace the bearing, to put lubricant on the basis of a molybdenum disulfide. To check a condition of the aligning plug.
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The wrong installation of the conducted clutch plate |
It is correct to establish the conducted disk.
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The conducted disk which type does not correspond to this coupling is established |
To establish a disk of the necessary type.
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The gnash at inclusion of transfer or backing, jams the gear shifting mechanism, gear shifting is impossible, coupling does not work (at cars with a coupling hydraulic actuator)
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Lowering of the level of working liquid. Hit of air in a hydraulic actuator. Leak of liquid from the working or main cylinder, elasticity of walls of a tube of a hydraulic actuator. Wrong adjustment of a fork of switching off of coupling |
To check a hydraulic actuator. To restore the level of working liquid, to pump over a hydraulic actuator. To replace faulty details. To restore the level of working liquid, to pump over a hydraulic actuator. It is correct to adjust.
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The same (on cars with the mechanical drive of coupling)
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Not coaxiality of details |
To replace faulty details.
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The free wheeling of a pedal exceeds norm |
To check a free wheeling of a pedal, if necessary to adjust.
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The drive cable which is not corresponding to this coupling (the increased length) is established |
To establish a cable of the drive of the necessary type.
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Jamming of a cable of the drive |
To replace a cable.
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The self-regulation mechanism is faulty (if is available) | |
The same (on cars with mechanical transmission, only for transmission 020)
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Excessive reduction of length of a pusher owing to wear |
To replace a pusher, to check the coupling switching off bearing. On contact places of a pusher and the bearing to apply a thin film of G 000 100 lubricant.
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The same for all cars
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The insufficient course of a pedal of coupling (stirs a rug or a covering under a pedal). Coupling completely is not squeezed out |
Inform the customer.
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The gnash is caused only by gearing of a gear wheel of a backing |
Inform the customer. Before inclusion of a backing to squeeze out a pedal of coupling and to wait 3–6 seconds depending on diameter of the conducted disk. At first have to stop a main shaft of the check point with the conducted disk.
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Wrong adjustment of the mechanism of gear shifting |
To check, if necessary to adjust.
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Gear shifting lever support lubricant is necessary. Violation of the correct landing of details of the mechanism of gear shifting |
To grease the gear shifting mechanism, to replace faulty details.
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Sticking or the increased friction of the conducted clutch plate on vents of a main shaft. Corrosion of a nave of the conducted disk or damage at installation. Violation of centering of a nave of the conducted disk |
To check nave vents for lack of destructions, if necessary to replace the conducted disk. To remove corrosion and the remains of lubricant from a nave and from shlits of a main shaft. On vents of a main shaft to apply very thin film of G 000 100 lubricant. To remove excess of lubricant by movement of a disk on a main shaft in both parties. If the nave is not aligned, then check position of the aligning plugs. Check a condition of the bearing of switching off of coupling, a holder of the bearing, a press disk and the directing crankshaft bearing. If necessary to replace.
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Too small vystupaniye of a press disk (the disk of improper type is established) |
To replace press a disk.
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Defect of the directing crankshaft bearing. The main shaft of the check point rotates at the switched-off coupling |
To replace the directing bearing, to put lubricant on the basis of a molybdenum disulfide. To check a condition of the aligning plugs. If necessary to replace. To check a condition of a main shaft of the check point.
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Violation of mutual centering of the engine and the check point (there are no aligning plugs), because of which a ring of the conducted disk sdeformirovano |
Before installation of the check point to install the aligning plugs. To check a condition of the conducted disk, a press disk and the directing bearing (if is available). If necessary to replace.
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Defect of the directing crankshaft bearing | |
Wear of frictional slips because of inclusion of transfer on the raised turns, i.e. switching to a low gear at the high speed of the movement |
To replace the conducted disk, to inform the customer.
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Wear of frictional slips because of deliberate to pro-slipping by coupling at dispersal | |
Defect of synchronizers and / or mechanism of gear shifting |
To repair the check point.
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Wrong installation of a press disk. Deformation of the conducted disk because of the wrong driving |
To check a condition of details. If necessary to replace. Check the provision of adjusting hairpins. If after this replacement the gnash does not vanish, then check a condition of shlits on a nave of the conducted disk and freedom of a provorachivaniye of a main shaft of the check point, to check a condition of the directing bearing (if is available) the crankshaft, to repair the check point.
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The gnash is distributed on the 2nd transfer, and only at cold transmission |
Inform the customer. If necessary replace oil in the check point, having filled in oil with bigger viscosity.
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The increased thickness of the conducted disk |
To replace the conducted disk.
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Sticking of the conducted disk to a flywheel owing to corrosion (the car a long time was not operated, high relative humidity) |
To slightly smooth out adjacent surfaces. At strong corrosion to replace details.
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Coupling slips (cars with a coupling hydraulic actuator)
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The piston of the main or working cylinder does not come back to a starting position |
To replace the main or working cylinder. To replace working liquid, to pump over a hydraulic actuator.
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The same (cars with the mechanical drive of coupling)
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Wrong adjustment of a cable of the drive (insufficient free wheeling of a cable) |
To adjust a cable. If necessary to replace with a cable of the necessary type.
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The self-regulation mechanism (is faulty at its existence) |
If necessary to replace a cable.
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Jamming of a cable |
If necessary to replace a cable.
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The same (on cars with mechanical transmission, only for transmission 020)
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Leak of an epiploon of a pusher of switching off of coupling on primary to a shaft |
To replace an epiploon, the conducted disk. To clear press a disk and a flywheel.
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The same (all cars)
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Are established conducted and press a disk of inappropriate type |
To replace with disks of the necessary type.
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Wear of the conducted disk, burning out of a press disk, formation of furrows owing to an overheat, deformation of a press disk because of the wrong installation, weak effort of a press disk. The wrong driving at normal wear |
To replace conducted and press disks. To inform the customer.
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The increased friction of details of transmission, sticking of draft of a pedal |
To clear and grease hinged connections, if necessary to repair.
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Oiling of clutch plates and flywheel. Wear of an epiploon of the crankshaft. Hit of lubricant on the rubbing surfaces because of excessive lubricant of a nave of the conducted disk |
To replace the conducted disk. To clear contact surfaces of a press disk and a flywheel. To replace a crankshaft epiploon, to remove excess of lubricant from a main shaft.
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The wrong installation of the conducted disk |
It is correct to establish a disk. To check a condition of the conducted disk. If necessary to replace.
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Coupling "conducts", breakthroughs at in a start of motion (cars with a coupling hydraulic actuator)
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Wrong adjustment of coupling |
It is correct to adjust.
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Hit of air in a hydraulic actuator, defects in the main and working cylinders |
To replace faulty details. To check the level of working liquid, to pump over a hydraulic actuator, to check existence of leaks.
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The pusher of the main or working cylinder does not come back to a starting position |
To replace faulty details. If necessary to replace working liquid. To pump over a hydraulic actuator.
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The same (cars with the mechanical drive of coupling)
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Jamming of a cable |
To replace a cable.
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Jamming of a pedal. (Before check to disconnect a cable from a pedal.) |
To clear and if necessary to grease hinged connections. If necessary to replace the plug.
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Jamming or the increased friction of a fork of switching off of coupling |
To clear and grease hinged connections. If necessary to replace the plug.
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The same (all cars)
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Unstable operation of the engine |
Check adjustment of the engine, remove the cause.
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Driving errors: too small turns at dispersal |
Inform the client.
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The conducted disk of inappropriate type is established |
To replace a disk.
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Noise idling (only for transmission 020)
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Oiling of the conducted disk, contact surfaces of a press disk and a flywheel (infiltration of oil from a coupling basket is observed) |
To check a coupling switching off pusher epiploon, if necessary to replace. To replace the conducted disk, to clear press a disk and a flywheel.
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The same (for all cars)
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Breakage of the damping springs |
To replace the conducted disk.
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On the conducted disk there is no damping plate (the increased noise idling) |
To establish the damping plate.
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Deformation, breakage or ovality of a press disk |
To replace press a disk.
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Unstable operation of the engine |
Check adjustments of the engine, remove the cause.
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Violation of the correct position of the engine because of softness of details of its suspension bracket |
Check engine mount details. If necessary replace.
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Shock-absorbers are faulty |
To replace shock-absorbers.
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Oiling of frictional overlays of the conducted disk, contact surfaces of a press disk and a flywheel |
Establish the oil hit reason. If necessary execute repair. To replace the conducted disk. To clear press a disk and a flywheel.
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The raised side play of the bearing of switching off of coupling on the directing plug (uneven distribution of the effort operating on a diaphragm spring of a press disk) |
To replace the bearing and the directing plug. To check a condition of details and hinged connections.
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Uneven work of a press diaphragm spring because of the raised side play of the bearing of switching off of the coupling causing uneven distribution of effort on a diaphragm contour |
To check a surface of a prileganiye of frictional overlays of the conducted disk to a basic surface of a flywheel and a condition of a diaphragm spring. If necessary to replace press a disk. To replace the bearing and the directing plug.
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Deformation of a basket of coupling in the course of assembly therefore the correct provision of a press disk is violated |
To clear a flywheel and press a disk of lubricant. At detection of serious destructions (zadir, traces of an overheat, grooves) to replace. To remove lubricant from a nave and from shlits of a main shaft. To apply a thin film of G000 100 lubricant on vents of a main shaft. To remove excess of lubricant by movement of the conducted disk on a main shaft in both parties.
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