Tire service and wheel balancing. Tire repair.

Tire repair refers to the working operation of removing a tire from a rim and/or mounting it on a rim. Tire repair is needed to repair punctures, side cuts, or just a seasonal tire change on a vehicle. It is very important that tire mounting services are performed with special equipment and in strict compliance with the technology of tire mounting, which includes wheel washing, tire dismantling and mounting, and balancing the wheel, i.e. balancing the tire and disk as a complete set. Balancing is necessary to eliminate imbalance of the wheels, which in turn leads to a run-out of the wheel and increased wear of suspension elements and tires, so it can not be neglected in any case. If you neglected this operation and got into a serious accident, find out where to take scrap cars for cash near me.

Separate attention should be paid to tire repair, which makes sense to dwell on in detail

Repair of punctures, damages
Punctures and damage in any part of the tread and sidewall of a tire impairs its performance and safety level, and the tire affected must be replaced by the same one or repaired.

Vulcanization is a method of repairing all kinds of tire damage. It comes in two varieties – “cold” and “hot”.

Cold vulcanization is the joining of two materials together with an adhesive (in this case the rubber components) without heat treatments.

Hot vulcanization is different from cold vulcanization in that the joining of materials, or rather their diffusion occurs at high temperatures. Also hot vulcanizing is divided into vulcanizing after the jointing of the vulcanized materials (one-step system – includes puncture and patch vulcanized together, and a two-step system – the puncture is vulcanized before the patch by heat press), as well as joining the materials after the preliminary heat treatment.

The tire can only be repaired if the bracer part of the tire has not been damaged. A breaker is an intricate web of nylon, steel, or other cords, or in some cases, belts (the carcass or supporting part of the tire).

Fungus.
Off-road, light truck tires are repaired with fungus diameters ranging from minimal to 8mm. Normal car tires and also SUV tires with a small tread width can be repaired with mushrooms not exceeding 3-6mm. Truck tires can be repaired with mushrooms from 8 to 24mm. The reason for fitting such small installation diameters on cars, light trucks and off-roaders is that the thicker ones could damage the tire beaker and consequently the tire is exposed to damage. So with a damaged tire breaker, the tire carcass will not deform in a predictable manner. If even a tire with a broken breaker is repaired, it can fail because moisture and air can get inside the carcass, which can lead to internal hernias, and the next thing you know, the tire will be suddenly destroyed. Such an improper repair could be the last thing on the life of the car as well as the passengers and driver. Puncture angles less than 30 degrees to the vertical axis of the tread are not repairable. Hot vulcanization of the tread is applied in extreme cases, since the tread pattern and consequently the adhesive properties are altered. Hot repairs are done mainly for lateral damage.

Harnesses.
Express repair on the road. There are two types: raw rubber tourniquets and impregnated rag tourniquets. Textile tourniquets dry out and after a while begin to bleed air and require the intervention of a tire fitter.

Cord patches (radial and diagonal patches) with a specific installation direction. They are used to repair tread holes, side holes, side hernias, and sidewall cuts. Cord patches come in 1-5 layers (layers of nylon cord). Some contain metal cord.

Sidewall cuts are repaired almost 100% when the cut is parallel to the nylon cord. If across the strands, treatment is less likely. In the latter case, it is possible for hernias to develop at the site of the cuts, so the tire must be replaced.

 

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