Do-it-yourself replacement of the VAZ-2107 driveshaft crosspiece: step-by-step video instructions

A car of any brand, including the VAZ-2107, needs regular inspection of its technical condition, since a faithful four-wheeled friend must first of all be considered as equipment that may sooner or later fail. Car owners can fix many problems on their own if they strictly follow the instructions provided by professionals, and if any questions arise, watch a training video tutorial on an online resource.

What consequences can be observed if the cross is not replaced in a timely manner?

If a failed automotive component is not replaced immediately, the consequences will lead to more serious damage:

vibration from the cardan will constantly increase due to the weakened connection of the element with the cross;
during a long trip, failure of the gearbox is possible, since the vibration will be transmitted to the secondary shaft of the gearbox;
the shaft located in the gearbox may break off.

Such breakdowns can only be prevented by timely replacement of the driveshaft crosspiece.

Purpose of VAZ 2107 cardan crosspieces

The need to use cardan crosses (CC) in the design of a car is due to changes in the position of the shafts relative to each other during movement. If the axes of these shafts were constantly on the same straight line, then crosspieces would not be needed. However, when moving, the distance between the axes changes in both vertical and horizontal planes.

The cardan joint is involved in the transmission of torque from the gearbox to the drive axles. Thanks to the KK, a flexible connection of the VAZ 2107 engine with the driving rear axle is ensured. The cardan design also includes hinges, intermediate supports and connecting devices. But it is the crosspieces that are responsible for transmitting torque at constantly changing angles between the shafts during movement.

The VAZ 2107 is a rear-wheel drive car, and its design provides a special role for the cardan. It transfers all engine work only to the rear wheels. Therefore, on the “seven” the cardan is located under the bottom and the floor in the cabin is raised in the middle.

Preliminary diagnostics of an automobile unit

Experts recommend that before replacing the cardan, you carry out independent diagnostics of all kinds of faults, conducting it in the following sequence:

it is more convenient to check for faults if the car is placed on a special pit for vehicle inspection or on an overpass;
after installing the machine, be sure to put a stop under both front wheels;
The handbrake must also be applied.

Next, you should make sure that the retaining rings in the so-called glasses have not fallen out of their places. If such an element is not detected, it must be installed, since without it the “glass” may simply fall out of its seat. After this, you can begin to check for faults in the cross, starting with checking for play. To check, you will need a regular screwdriver, which is installed between the crosspiece and the driveshaft in order to be able to rotate the driveshaft both clockwise and counterclockwise.

If even a slight play is noticed during this event, the automotive unit will need to be replaced.

Where are the crosspieces located on the driveshaft?

We will not only show where they are located, but also provide a photo of what they look like. You most likely have already looked a little lower and noticed this photo, which shows the location of the crosses with red arrows, and the small photo shows one of the crosses, next to it There are four retaining rings, the same ones we talked about just above.

Tools for work

Before starting work, you should prepare the most necessary tools and spare parts for the car:

new crosspiece for VAZ-2107;
the outboard bearing, if during the inspection it is discovered that it has failed, and the retaining rings;
new connecting fasteners in the form of bolts and nuts for more reliable fixation of the new automotive unit;
a regular hammer and a Phillips screwdriver;
keys in sizes 12, 13 and 27;
a device that will help remove retaining rings (they are called “pliers”);
copper or aluminum adapter.

Conclusion

It must be remembered that work done correctly, as well as high-quality spare parts, will help the car owner forget about this unit for a long time. And don’t forget about timely lubrication of the bearings through a grease nipple - then the next repair will not have to be done soon.

Of course, taking on this work yourself or entrusting it to service station mechanics is the job of every car owner. But, taking into account that the owners of VAZs (especially “classics”), as a rule, are not rich people, there is a reason to do this work yourself, thus saving a decent amount.

Source

Phased dismantling

First you need to dismantle the car unit:

Since it is not possible to replace the crosspiece without removing the driveshaft, you first need to remove this unit from the car. To do this, you will need a size 13 wrench; use it to simply unscrew the two clamps that secure the suspension bearing to the transverse support.
The fasteners are unscrewed from the junction of the rear axle shank with the vehicle assembly. To make it easier to assemble the entire structure in the future, experts recommend placing marks before unscrewing the fasteners. Quite often, if the cardan is assembled incorrectly, vibrations and even beating are felt when operating the machine.
Using pliers, carefully remove the cross from the propeller shaft.
The locking wheel is removed.
Next, you need to rotate the cardan to such a position that the crosspiece takes on the so-called “hanging” position.
Using a hammer and a mandrel, you need to knock the “cup” out of the cross.
After removing the “cup,” the cardan rotates to a different position to make it more convenient to repeat this process with the next element.

Before installing a new cross, the surface of the assembly must be thoroughly cleaned of dirt and do not forget to inspect the condition of the grooves that are used for the retaining rings.

Basic faults

Any component or mechanism sooner or later wears out and requires complete or partial replacement (repair). The most common driveshaft malfunctions:

The latter malfunction occurs for various reasons. The most likely of them:

The signal to replace these parts is increased noise while driving, vibration and extraneous sounds emanating from under the car.

Step-by-step installation

Before installing a new element, you need to pay attention: is there grease on the bearings and on the cardan cross? If such a substance is not observed, lubricant will definitely have to be added. In the case of installing a cross with an oiler or grease fitting, lubrication can be done after installing this element, using a convenient syringe that is intended specifically for this process.

Installing a new cross will not take much time and the car owner will be able to install this element independently and correctly if the process is carried out in the following sequence:

First of all, you need to remove two “cups” from the cross.
Next, you need to install the cross into the so-called eyes.
Slowly moving the element from one side to the other, the “cups” are put on in their original place. This stage must be performed slowly, making sure that when installing the “needles” do not fall apart from the “cup”.
By squeezing the “cup”, it is worth achieving the formation of a small groove, which should appear under the retaining ring. A copper or aluminum attachment will help simplify this process.
After installing the locking ring, the cardan is carefully rotated so that the crosspiece moves in different directions. The “cup” is put on the element and compressed again so that the locking wheel can be installed.

At this point, the replacement process is considered complete; every VAZ-2107 car owner can handle such work without any problems. Well, to find any answer to a question on this topic, step-by-step video instructions on the Internet resource will help you, which you can watch at the most convenient time for yourself.

Spare part selection

In order to repair this unit less often, you need to purchase good quality spare parts. The correct choice of crosspiece determines how often it will need to be replaced. Choice of cross:

And another effective way to check. The crosspiece taken out of the package should be placed on a piece of glass - a glass counter is quite suitable, or on the same side-view mirror (removed, of course). Holding your fingers opposite the axis of the cross, you need to try to swing them on this surface. Next, you need to do the same with other axes. Then turn the part and do the same operation again. During the inspection process there should be no knocks on the glass surface, which will indicate the absence of deformation of the part.

You should buy two parts at once, because after replacing one, the replacement of the other will very soon follow. Many people immediately change the bearing of the suspension device, so as not to have to repeat what they have done before, that is, disassemble everything, wasting time and their own nerves.

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