Tyre repair Methods
Tyre repair Methods; Here we go again? I am reminiscing about things that we in the tyre trade, did in the old days. I suppose you could say that there is nothing wrong with experience and knowledge. So I will go down the experienced road and explain why tyre repairs changed.
When I first started work in a tyre depot, my first job was to be the tyre repairer. It goes back to my days as an apprentice mechanic. Apprentices would get all the dirty jobs, which the other mechanics did not want to do. The most common type of tyre repair was to repair the tube, inside the tyre.
Although the tubeless tyre was becoming more popular, there were still many tyres that would have tubes fitted. It was a quick fix to fit a tube when a tyre needed repairing.
The tube would simply have a conventional tyre patch fitted. These were similar to the ones used to repair push-bikes. The actual tyre, however, was left without a patch. The reason is that most cross-ply and radial tyres in those days were “textile radials.” The only steel involved was in the bead area.
The main change came with the introduction of the “steel belted radial tyres”.
To start with the tyres were repaired in much the same way. The problem to be was when a tyre became penetrated with a nail or any other metal object. Water would be allowed to get into the steel belt of the tyres tread area, through the hole.
Tyre repair Methods
The water penetration would eventually cause the steel belt to oxidise “rust.” The rusting effect would then cause the steel belt to separate and twist. The result was what we call “separation” and an out of shape tyre. We in the trade knew that another type of repair had to be invented?
Tyre repair companies such as Tip-Top introduced a new method called the “mushroom plug”. This new system of repairing was to be the best method and is still used to this day. The hole in the tyres tread was to be drilled out using a special drill that would also cut the steel. The drill made the hole smooth and possible for the repair to be smoothly inserted.
The mushroom plug would be pulled through from the inside of the tyre. The damaged area of the tyre is then buffed with a and a fine coating of special rubber cement is applied to the area. We also place some rubber cement in the actual hole. The mushroom plug is then pulled through the hole, making a perfect seal.
This method is carried out in a dust free area, as any dirt and dust can prevent the vulcanisation process. We no longer experience any problems with tyre belts separating and the repairs are suitable for all types and speeds of tyres. We at Pellon tyres charge our public £13.90 for this services. This price also includes a re-balancing and re-fitting the wheel onto the customers car if required.