What is the backstage in the gearbox, where is
Content
When the car is moving, the driver controls the operation of the engine and gearbox. Vehicles with a manual transmission use a rocker through which the driver controls the gears. Next, we will consider the device of the wings, the features of repair and operation.
What is a backstage in a gearbox
Most car enthusiasts call the gear lever, that which is in the cabin, as a rocker, but this is a misconception. The rocker is a mechanism that connects the rod through the gearshift knob, which moves the gear fork. If the car is front-wheel drive, then the rocker is under the hood, on top or to the side of the gearbox. If the car is rear-wheel drive, then the backstage can only be reached from the bottom.
The gear selection mechanism is constantly subjected to a load: vibration, through the gear shift forks and the force from the driver's hand. Among other things, the link is not protected by anything, therefore, insufficient lubrication of the moving elements, the ingress of water and dirt into the hinges leads to an early failure of the whole mechanism. Please note that the curtain has a resource of at least 80 km.
Backstage device
During the production of cars, all devices and mechanisms go through modernization and design renewal. Automotive evolution has not bypassed the gearbox wings, it is constantly changing, but the principle of its operation has not changed for decades. To simplify the description of the device of the gear selection mechanism, we will take as a basis the generalized and most common type of backstage.
So, the stage consists of four main parts:
- the lever through which the driver controls the gearbox
- tie rod or cable;
- rod-fork with a finger;
- a set of auxiliary hinge rods and elements.
Among other things, a cable, body or springs can enter the stage device. Thanks to the well-coordinated work of the mechanism, the driver manages to change gears in a timely manner, the first time, due to the fact that the lever “moves” in the given positions.
Depending on the design features, the yoke can have two types of drive:
- cable;
- jet thrust.
Most automakers use a cable drive of the rocker, since the cables provide the least play of the gear lever, and the design of the rocker itself is simplified and cheapened many times over. Moreover, the automatic transmission uses only a cable.
As for the link, which connects the gear selection mechanism and the gearshift knob, due to the use of hinge joints, there are difficulties in adjustment, as well as the appearance of backlash at the slightest wear of the hinges. For example, in the design of the VAZ-2108 backstage, a cardan and jet thrust are provided, which, when worn, provide play.
How is the checkpoint controlled?
The design of the gear selection mechanism depends on the layout of the main units. Previously, cars had a classic layout, where the engine and gearbox are installed longitudinally, which means there is no need to use complex mechanisms. In some cars, the rocker is straight, that is, one end of it communicates with the gear selection forks, but at the same time the driver constantly feels vibration from the gearbox operation. More modern cars have a rocker equipped with plastic breadcrumbs and articulated joints through which the gearshift knob and the rocker are communicated.
The classic drawstring looks like this: there is a spherical inundation in the body, which is clamped by plastic bushings, which provides a movable movement of the handle in different directions, while the gate cannot be removed from the body just like that.
The gear control scheme is primitive: moving the gearshift lever to the side, sets the rod into the groove, which is fixed on the slider. Moving the handle back and forth, the rod moves the fork slider, which engages the gears, that is, the required gear is engaged.
In front-wheel drive vehicles with a transverse engine, the gear selection mechanism is located under the hood, which means that the gearbox is remotely controlled.
This design has a whole system of linking levers and rods, which in the end we call the "rocker". Here, the driver, by moving the gearshift knob, through a long rod or double cable, sets in motion the gear selection mechanism mounted directly on the gearbox housing.
Signs of faults backstage
Despite the fact that the backstage is quite reliable - the constant impact of loads on it and the total mileage, at least require maintenance and adjustment of the mechanism. Otherwise, the lack of backstage maintenance leads to undesirable consequences, in the form of a strong backlash or a complete failure of the mechanism assembly. Most likely signs:
- lever play (increased looseness);
- difficulties arise when shifting gears (gears are turned on with a crunch, or greater effort is required);
- impossible to turn on one of the gears;
- erroneous inclusion of gears (instead of the 1st, the 3rd is turned on, etc.).
Backlash practically does not adversely affect the operation of the gearbox as a whole, however, neglecting such a moment can soon lead to the fact that at the wrong moment you will not be able to engage any more gears. If the backlash is not eliminated in time by repair, you will have to replace the rocker assembly.
Gearbox rocker adjustment
If in your case it is possible to do with adjusting the wings, then this operation can be done independently, without the help of specialists. There are two ways to adjust the slide:
- In reverse gear. We move the gearshift knob to the reverse gear position, then it is necessary to loosen the clamp on the link of the stage, and then we move the gear lever to the reverse speed position that is acceptable and comfortable for you. Now we securely fix the clamp.
- First gear. Here the lever is transferred to the first gear position, then we throw off the clamp. Now it is necessary to rotate the rocker so that it rested against the reverse gear locking bar. As a rule, the rocker rotates counterclockwise.
It is important to understand that the above methods are generalized and are suitable for gear selection mechanisms of a classic design, therefore, before adjusting the backstage on your car, you should study the device and the possibility of adjusting the backstage.
Questions and answers:
What is the gearshift? This is a multi-link mechanism that connects the gearshift lever to the stem that goes into the box. The rocker is located under the bottom of the car.
What kind of backstage are there? In total, there are two types of rockers: standard (developed by the automaker) and short-stroke (provides a reduced gearshift lever travel).
What does the backstage do? With this multi-link component mechanism, the driver can change gears in the gearbox itself by moving the gearshift lever to the appropriate position.
