Arbeitsablauf
The regrooving of tyres is a skilled operation which should only be undertaken by skilled personnel in a ventilated workplace. The following notes describe the procedure to be followed to ensure safe and effective regrooving.
IMPORTANT NOTE:
Tyres must be suitable for regrooving. Not all tyres are suitable for this process.Those with sidewall damage, irregular tread wear, signs of tread separation, exposed or damaged cord structure, and those worn completed smooth should be discounted. Do not attempt to regroove a tyre which does not have the word REGROOVEABLE on the sidewall - consult the manufacturer for further information. When regrooving remoulded tyres, the normal regrooving depth should be 1mm less than for new tyres, however please check with the tyre manufacturer.
When using regrooved tyres in twin-wheel fitments, those of a similar state of wear/regroove should be paired together, otherwise excessive wear and possible failure of the larger diameter tyre may occur.
Always note the following:
» that the vehicle is within permitted limits for fitting regrooved tyres,
» that regrooving may be carried out when 2 – 3 mm of tread depth remains.
» that the law requires any regrooving to follow the manufacturer’s recut tread pattern.
Make sure you have the correct tools to hand to do the job;
regrooving tool, tread depth gauge, the correct regrooving blades,
any regrooving stand, regrooving information relating to the tyre which is to be regrooved.
Check that the tyre is suitable for regrooving. Look for the word REGROOVEABLE on the sidewall of the tyre. If this is absent con-sult tyre manufacturer for further information.
In a well lit area check the tyre for signs of damage to the tread and sidewall area and if any damage is found, repair it correctly. Also remove any flints etc. embedded in the tread otherwise the regrooving blade may be dama-ged or broken during the regrooving process.
Measure the remaining tread depth at several places around the tyre and use the smal-lest depth to set the depth of the regrooving blade in the regrooving tool. Regrooving smooth or irregulary worn tyres is not advisable because you do not know how much rubber is left.
Consult the tyre manufacturer’s regrooving instructions for the tyre in question. The blade setting is determined by the width and depth stated in the manufacturer’s instructions. These will also show the shape of the blade to choose-rounded or wedge-shaped.
Before fitting or removing a blade from the regrooving tool, always make sure it is dis-conntected from the mains electricity supply. Set the blade to the depth specified by the manu-facturer. Important note: Check that the instructions clearly say that the depth setting includes the pattern depth remaining, or that you have to add the pattern depth remaining, because this rule will vary between manufacturers.
Regroove a small area of the tyre appro-ximately 150 mm long. Remove the rubber you have cut and, using the tread depth gauge, check that you are cutting the recommended depth and that you are not exposing any cords.
now regroove the tyre in line with the manufacturer’s regrooving tread pattern. Make sure the hand which is not holding the re-grooving tool is placed on the lower sidewall of the tyre and not on the tread area in front of the regrooving tool.This will avoid accidents.
finally, even the tyre has been fully regrooved, inspect it to make sure that no cords have been exposed. The tyre is now ready for refitting to a vehicle.
The regrooving of tyres is a skilled operation which should only be undertaken by skilled personnel in a ventilated workplace. The following notes describe the procedure to be followed to ensure safe and effective regrooving.
IMPORTANT NOTE:
Tyres must be suitable for regrooving. Not all tyres are suitable for this process.Those with sidewall damage, irregular tread wear, signs of tread separation, exposed or damaged cord structure, and those worn completed smooth should be discounted. Do not attempt to regroove a tyre which does not have the word REGROOVEABLE on the sidewall - consult the manufacturer for further information. When regrooving remoulded tyres, the normal regrooving depth should be 1mm less than for new tyres, however please check with the tyre manufacturer.
When using regrooved tyres in twin-wheel fitments, those of a similar state of wear/regroove should be paired together, otherwise excessive wear and possible failure of the larger diameter tyre may occur.
Always note the following:
» that the vehicle is within permitted limits for fitting regrooved tyres,
» that regrooving may be carried out when 2 – 3 mm of tread depth remains.
» that the law requires any regrooving to follow the manufacturer’s recut tread pattern.
Make sure you have the correct tools to hand to do the job;
regrooving tool, tread depth gauge, the correct regrooving blades,
any regrooving stand, regrooving information relating to the tyre which is to be regrooved.
Check that the tyre is suitable for regrooving. Look for the word REGROOVEABLE on the sidewall of the tyre. If this is absent con-sult tyre manufacturer for further information.
In a well lit area check the tyre for signs of damage to the tread and sidewall area and if any damage is found, repair it correctly. Also remove any flints etc. embedded in the tread otherwise the regrooving blade may be dama-ged or broken during the regrooving process.
Measure the remaining tread depth at several places around the tyre and use the smal-lest depth to set the depth of the regrooving blade in the regrooving tool. Regrooving smooth or irregulary worn tyres is not advisable because you do not know how much rubber is left.
Consult the tyre manufacturer’s regrooving instructions for the tyre in question. The blade setting is determined by the width and depth stated in the manufacturer’s instructions. These will also show the shape of the blade to choose-rounded or wedge-shaped.
Before fitting or removing a blade from the regrooving tool, always make sure it is dis-conntected from the mains electricity supply. Set the blade to the depth specified by the manu-facturer. Important note: Check that the instructions clearly say that the depth setting includes the pattern depth remaining, or that you have to add the pattern depth remaining, because this rule will vary between manufacturers.
Regroove a small area of the tyre appro-ximately 150 mm long. Remove the rubber you have cut and, using the tread depth gauge, check that you are cutting the recommended depth and that you are not exposing any cords.
now regroove the tyre in line with the manufacturer’s regrooving tread pattern. Make sure the hand which is not holding the re-grooving tool is placed on the lower sidewall of the tyre and not on the tread area in front of the regrooving tool.This will avoid accidents.
finally, even the tyre has been fully regrooved, inspect it to make sure that no cords have been exposed. The tyre is now ready for refitting to a vehicle.