The gearbox is one of the most important aggregates in the device of any mechanical vehicle, which makes it possible to interact the engine and a wheelbase, as a result of which moves. When a box for one reason or another comes into disrepair, the further full operation of the car is no longer possible. Domestic cars are no exception.
The Russian automotive industry, though succeeds in selling a car of a budget class, but cannot be called successful. FROM borkanot having equal in the number of claims to itself, frequent visits at maintenance stations, fast corrosion of body elements, poor and non-market interior - these eternal satellites do not leave the "Lada" from the moment of its production and to this day.
The only advantage of the so-called "pelvis" is a relatively low price, both on the car themselves and on service. But the sake of justice should be said that when it comes to the transmission - complaints from users goes least. In particular, gearbox VAZ 2107it is famous for nothing enough, its durability and a relatively small number of problems arising from part.
At the same time, it would be unfair to say that vAZ 2107 gearbox repair - Something out of a series of outgoing, and its work happens without complaints.
Of course, technology of 6 and more gear shift steps, and even more so with automatic selection, hardly reached VAZ 2107 - in its basis the engineers are laid old good mechanical five-speed transmission. However, it is unlikely that the rear-wheel-water old-timer car is necessary for something more.
He does not pretend to sports laurels, since the number of horses under the hood is suitable only to move the car from the scene and maintain a speed safe for the driver and passengers to 120-130 km / h. Torque, although it is also very small, but "5-s stupid»Perfectly recycles and transmits it to a wheelbase.
Simplicity - the key to success, as you know, and at least in this sense, the designers of the VAZ automotive plant did not lose with the "seven" box. In comparison with similar mechanisms in foreign cars, the seven box does not have excesses and focuses on a time-tested device. As practice shows, regular change of oilin KPPand the disregard of fun like the sharp accelerations from the scene will be able to extend the life of the transmission up to several hundred thousand kilometers of the mileage.
From the obvious deficiencies of the box, the noise published during operation can be noted. Its level cannot be reduced by any manipulations. And considering the poor sound insulation of the salon VAZ 2107, it can deliver significant discomfort to everyone who is in it. However, if you use the machine exclusively as a "workhorse" to get from the point "A" to the point "B", you can simply not pay attention to it.
DEVICE
The entire transmission "Seven Zhiguli" is enclosed in a block closing on both sides with covers. The gear selector is located on top. The box work is based on three shafts:
- primary;
- intermediate;
- secondary.
The primary actually protrudes with gears that rotate on the bearing in the box crankcase, one. Secondary is a continuation: there are gears of the first, second and third speeds on it. They move along a given trajectory and thus interact with the gears of the intermediate shaft.
The magnitude of the rotational torque depends on the diameter of the gear, which has different shafts in the checkpoint on VAZ 2107. somewhat varies. The rotation of the secondary shaft occurs on the bearings, one of which is roller - is located in front, and the rest is on the back cover and in the crankcase.
The function of the intermediate shaft is the transmission of the rotational torque in the desired quantity between the secondary and primary, from the first of the first items, respectively. As in the case of primary, the intermediate shaft itself and gears are a single mechanism. Rotation is carried out on ball bearings. Blocks responsible for the fifth and rear gears are located here.
In the left side of the box housing there is a hole through which the topping is performed and change of oil transmissions. Sealed gaskets are arranged between the lids and the block to minimize the risk of ledges of the working fluid.
Important: The minimum required amount of oil for the normal functioning of the mechanical gearbox on the VAZ 2107 is 1.5 liters. Some car owners to simplify the procedure are filling right at the interface of the selector with the box housing. Of course, it is much easier than the plot of the working fluid through the hole on the pallet.
The switching process itself is carried out using forks that are activated by the lever. As soon as he changes his position, the hinge joins with one end with a recess on the axis, and the other with a fork. Since the lever is responsible for moving the fork, this process and the adhesion of the gears of the secondary and intermediate shafts leading. The transmission switches when the circuit of its rotational torque occurs - then the secondary axis begins to move with a speed corresponding to the gear ratio.
REPAIRS
On the VAZ 2107 5.A-stepped box, which, despite the comparative simplicity of its device, can be unreasonable on the classic reasons for MCPP:
- wear for natural reasons: large mileage, non-normalized operation and development of resource by components, inconsistency of weather conditions desired, and as a result - reduction of the resource, etc.;
- non-compliance with the working fluid standards suitable for normal transmission operation;
- non-original spare parts existing in the box;
- damage to the CAT body with mechanical effects;
When it comes to the gearbox, even if it is "Zhiguli", the optimal option will instruct the diagnosis and servicespecialists for a hundred. Good, renovate It will cost it too expensive, with the exception of rare cases requiring full replacement of the entire mechanism, when it will be more appropriate to acquire the same new car.
CHARACTERISTICS
The production of the car was carried out from 1982 to 2013. The package of VAZ 2107 includes the presence of engines of small volume and power, from 1.3 to 1.7 liters. Minimum amount of horsepower - 64, maximum - 135.
Five-speed mechanics are equipped with all variations without exception. The acceleration time up to 100 kilometers per hour varies from 13 to 17 seconds, depending on the engine. Although the maximum permissible vehicle speed is 180 kilometers per hour, even the engineers themselves do not recommend exceeding the mark. The danger is due to the lowest assessment on safety standards (not the most successful location of the engine, fragile body materials, etc.), the high probability of the occurrence of drift due to low weight - 1040 kilograms - and drive to the rear wheels.
