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Replacement of the cross shaft of the propshaft VAZ-2107 with your own hands

The replacement of the cross shaft of the propeller shaft VAZ-2107 can be performed both on the flyover, and on the lift, pit. However, if the rear of the car is raised higher, then you can do all the work on a flat surface. In order to understand the general principle of the operation of the crosspiece, its purpose and composition, it is necessary to thoroughly consider the design of the cardan shaft. Its function is to transfer the rotational motion from the gearbox to the rear gearbox, in which the differential is located. To it the connection of two semiaxes connecting a reducer with wheel hubs is made.

Cross construction

Turning to any directory, you can find out that a cross is called any device that consists of two intersecting axes. Actually, this can be seen from the name, since there is a direct indication that the device is a cross-shaped device. When the replacement of the propshaft spindle in the rear-wheel drive VAZ is performed, care must be taken, the work must be carried out as qualitatively as possible.

The reason for this - rather small elements that are part of the mechanism. The base has the form of a right cross. Its edges are made in the form of an ideal cylinder, inside they are all-metal. But the work of the mechanism is greatly influenced by those elements that are worn on the edges of the crosses - metal cups with rollers along the edge. All the elements of the crosspiece made of alloy steel are made, which increases its reliability and durability.

Assignment of the spider and the principle of operation

If you know how to replace the propshaft spider on the VAZ classic series, then you saw the shape of the knot. The cardan shaft consists of two parts. The first is connected by means of an elastic coupling with the shaft of the gearbox. The second is joined to the flange at the input of the rear axle reducer . All would be fine if the gearbox flange and the output of the gearbox were on the same axis. But everything is slightly more complicated - the flange is slightly lower.

In addition, when the car moves the gearbox shifts up and down, and this displacement is quite impressive. Use a single cardan shaft is simply impossible, you need to look for a way out of this situation. For this, it is divided into two parts. First the cardan is installed as much as possible horizontally, then the cross is mounted and with its help a small bend is made downwards. At the very edge is again the cross, which connects to the last element - the flange on the driveshaft.

Carrying out the diagnosis of the propshaft spider

Creepy howl is a sign that it is necessary to replace the spider of the VAZ-2107 propeller shaft. Sometimes you can hear a crunch and a metallic screech. To make sure that the reason for this is the cross, it is necessary to diagnose it. It is most convenient to carry out such work on a pit or lift, as the survey is better and more convenient. But if there are no such attributes, you can simply lift the car above the ground.

Do not forget to only fix its position by placing the stops under the front wheels. First of all, carefully examine the condition of the cardan gear. All retaining rings must be in place, otherwise the glass of the cross from the seat may fall out. Now check for a backlash in the crosspiece. To do this, put a screwdriver between it and the cardan shaft. Try to shift it to the sides. If you feel even a slight backlash, then you need to change the cross necessarily.

Tools needed for repair

On the VAZ-2107 car, replacing the crosses with their own hands is done with the help of a small number of tools. Of course, the manual says that you need a special puller, without it you can not do the work. But practice shows that you can do everything without having such a special tool. Of course, you need a good jack and supports. But this is for those cases when repairs are made on a flat surface, rather than on a pit or lift.

The only tool that is really needed is the forceps for compressing the locking rings. Without them it will be difficult not only to pull the rings out of the grooves, but also to install new ones in place. In addition, the keys must be in the arsenal, pliers, screwdrivers, and lubrication. Before installing new frogs, it is recommended to lubricate them with grease for the CV joints. Do not interfere with the presence of a hammer, a wooden kiyanka or bronze blob. And also the knockouts and vice will be very useful.

Replacement

Before starting work, install the car so that it can not roll. A short-term replacement of the cross shaft of the VAZ-2107 propeller shaft is in progress. The price of one cross is about 150 rubles. There are, of course, more expensive, but it is unlikely that the owners of sevens will buy them, since the quality of all the same. For work you need a hammer, a knocker, tongs, two keys - a spanner for 13 and a carabiner on 12. Unscrew the nut from the flange with a key 13, and the bolts can easily be held by the carabiners at 12.

Now twist the connection of the suspension bearing with the bracket on the body. To remove the cardan shaft from the splines, apply a few sharp hammers on the flange. That's all, cardan is free, now pull out all the rings with tongs. A puller to take out the cups of the cross is a long process. Therefore, it is better to use the grandfather method, even if it is more aggressive. Bronze blank bar claw eyes, in which there are cups of crosses. If they are not badly rusted, they will fall out from sharp blows. Before installing new frogs, clean the seats from contamination.

Conclusion

As you can see, the replacement of the cross shaft of the VAZ-2107 propeller shaft can pass quite quickly, but you do not need to have the skills of a locksmith. In addition, there is no need for a huge number of special tools, you will have enough keys and a hammer. Just do not break the eyes. For this reason, it is recommended not to use a hammer, but a bronze disc, as it is soft and can not damage the propeller shaft.

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