Rear disc brakes on VAZ-2107: installation

Owners of the classic AvtoVAZ models are well aware that the brakes on these cars always left much to be desired, including at the "Seven." The situation can be improved. To do this, install the rear disc brakes on the VAZ-2107. The effectiveness of these systems is known to everyone. Therefore, very often car owners change the drum devices to their disk counterparts.

The procedure can be done independently. But it is necessary to take into account that the process is rather laborious. In addition, this operation will require the availability of special equipment. But for the owners of the "classics" there is nothing impossible.

Tips and Tricks

Rear disc brakes on VAZ-2107 are more effective. That's why after installing them on the rear wheel pair you will need to additionally adjust the pressure in the brake circuit. If this is not done, then it will turn on much earlier than the front. This can cause skidding. For the installation it will be necessary to carry out welding, as well as milling and turning operations. It must be taken into account that the car, in which such design changes are made, will not be able to pass the inspection. Another thing to keep in mind is that any intervention in the braking system of the car is a very dangerous exercise. If there is no confidence in the availability of appropriate skills, then it is better to leave the ideas to independently install disc brakes on the WHA and entrust this task to professionals.

Advantages of such a solution for VAZ-2107

If all the work on replacing the drum elements on their disk counterparts performed qualitatively and professionally, then the performance of the system will improve significantly. Among the advantages of this refinement is the high efficiency at braking.

If you improve the ventilation of the discs, this will ensure the reliability of the system when using intensively. On disk brakes, unlike their drum counterparts, moisture does not accumulate. It significantly reduces the efficiency of the braking process. In the winter because of her brakes can "grasp". The rear axle is locked.

Necessary equipment and accessories

To install disc brakes on the rear axle VAZ-2107, you need some equipment. This semi-axle in the number of two pieces complete with locking rings, seals, and bearings. Another is to buy or get a support and disks from the VAZ-2108. But you can use other kits. The fastening elements will be needed. These are bolts for mounting calipers, various washers and nuts, clamps. Also get spacers for the front wheels and brackets for mounting calipers. Such details must be made individually.

About the main brake cylinder

The system must first be slightly modified. You can do this with a small budget or purchase expensive components - calipers and pressure regulators. But first of all it will be necessary to replace the master cylinder. The pressure that he can create, is not particularly strong. And on reliability it is not too good.

Modification of the front

How does the rear brake work? Disk (VAZ-2107) devices mean the improvement of the front circuit. It is expected that the car after all the alterations will drive on 14 or 15-inch wheels. Perhaps this is knocked out of the budget and may seem unnecessary to someone. However, this is done not only for aesthetic reasons. Improvement is associated with the stability and controllability of the car. The most optimal option in this case is the replacement of standard front products with a set of front brakes from VAZ-2112. This kit is suitable for 14-inch wheels. In addition, the discs in this case are vented. You can pick up another set of rear disc brakes on the VAZ-2107. As for the support, they establish the standard elements from all the same VAZ-2112. Discs can be purchased ATE or any others at your discretion. But ATE products are ventilated and have grooves. These discs fit perfectly on the front hub without additional modifications. To mount this kit, you will need to make some calculations and order (or make yourself) a support for the caliper. Established for certain reasons will not work. Mounting for the support should have a thickness of not more than 5-7 millimeters. To produce it is best of durable steels or titanium. On sale you can search for finished products. A pair of such fastenings will cost $ 50.

About the rear brakes: what to buy?

Previously, the FIAT-124 had disc brakes at the back, but when the model began to be produced on domestic conveyors, they decided to refuse them for a number of reasons. Let's see what else is required to go to the rear disc brakes on the VAZ-2107. First of all, you need to purchase a set of brakes from the ATE brand. But you can also buy a more expensive version. This is Power Disk from the same brand. Although the effectiveness of it is not much different from cheaper counterparts.

Installation of rear disc brakes on the VAZ-2107 requires a groove of the rear axle to the landing dimensions of the disks. It is better to order this operation at some factories or private industrial enterprises. This approach guarantees high accuracy of operation at relatively low costs. Just as with the front brakes, you will need to calculate and fabricate non-standard adapters for attaching the rear caliper. There is an opinion that the same adapters as on the front wheels will do. Along with the installation of the rear disc brakes, it is recommended to replace the bearings in the semiaxis. For example, products from the manufacturer SKF proved to be good.

Installation process: dismantling

The first step is to dismantle the axles on the rear axle. Then the parts are thoroughly cleaned. You can wash them in gasoline or kerosene. But if there are new semi-axles, the old ones can simply be thrown away. Then the fluid drains out of the brake system. Then the parts and parts of the drum brake mechanism are dismantled. Leave only the tubes. Then remove the retaining rings and remove the hub bearing. You can do this only with the help of the press. The ring is made so that the pull-off load is equal to five tons. You can do without the press. Rings are simply barbarian sawn by a Bulgarian. But you need to do so that the semiaxis itself is not damaged. Saw not to the end. Further, the ring is split by a chisel, and the bearing is taken out. The semi-axles must be machined for the internal seating diameter of the brake discs.

Mounting the disk on the semiaxis, assembly

Before assembling the semi-axles, all parts should be thoroughly washed and cleaned in gasoline. Then install an anther of semiaxes, manufactured supernumerary support bracket and compensating rings. Then the axle bearing is washed. Then the element is smeared and pressed into the semiaxis. It is better to do this by using a pipe cut. The bearing is pressed to the stop. The pipe must have a diameter so that it rests against the inner ring on the bearing.

The pressing process is as follows. The pipe rests against the rings, and at this time the hammer is struck on the other edge. It is necessary to select the correct pipe and install it qualitatively. It should not rest against the outer ring of the bearing. Then you should make sure that the bearing fit is done reliably and qualitatively. Then warm the circlip. You need to warm strongly, reddish. Then the ring is mounted on the semiaxis. If it sits reluctantly and loosely, it is cut and installed a new one. Most often the part does not sit well because of insufficient heating. A powerful burner is needed. When the ring is cooled, install the spacer and the brake disc directly . Now it remains only to install the assembled semi-axle on the car, fix the caliper and connect the rear disc brakes to the VAZ-2107 to the system.

Connectivity

In the process of connection, there are absolutely no complications. Disc brakes will use the regular highway. Also, we should not forget about the "sorcerer". This is a braking force regulator. If VAZ-2107 does not have it for some reason, then it is necessary to return it. Otherwise, the effort will be transmitted unevenly. As a result, the rear disc brakes will be activated earlier than the front ones. Many remove the "sorcerer" and then regret it. If the rear brakes grasp before the front brakes, the risk of skidding the vehicle's axle increases. Also in this case, the brake system will overheat and wear out more quickly. And remove the element because of the greater efficiency of the brakes. But in fact, there is no effect. It is better to return the factory element to its place.

Disc brakes and parking

Since the installation of disk elements requires the exclusion of the mechanical drive of the hand lever, it is necessary to install a hydraulic drive. This operation is uncomplicated. To do this, you need a master cylinder clutch, drive lever, as well as two hoses from the brake system. Then a special construction in the form of a house is cooked from metal. Optimum use of steel thickness of about 3 mm. The brake actuator rod is guided forward and shortened. A small piston is then manufactured, which will then be inserted into the master cylinder of the clutch. This piston must include the stem of the hand lever. It remains only to connect the design. A hose from the main brake cylinder of the circuit is displayed in the car's interior. The element is attached to the first exit into the clutch cylinder. The second hose goes to the "sorcerer". The scheme is simple, although at first glance it may seem complicated. So you will successfully combine the rear disc brakes on the VAZ-2107 with the handle. Without a parking brake, it is rather problematic to use a car. Especially if it is being prepared for professional drift.

Recommendations of specialists

After all these operations, it remains only to pump the brakes. In the case of such an upgrade, the pumping will take longer. To do this, the parking brake must be removed and installed vertically. This will save air congestion. The brake fluid is best filled with a higher boiling point. It is necessary to periodically service the rear disc brakes on the VAZ-2107. Repair them is similar to the maintenance of any other similar structures.