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Maintenance Guide for Earthmover Tyres: Tyre Inspection

Maintenance Guide for Earthmover Tyres: Tyre Inspection

Reasons for inspecting a tyre

 

Establish a course of action for a removed tyre

Once removed from a machine a tyre can be:

  • returned to stock;
  • repaired;
  • retreaded;
  • scrapped.

A careful inspection will establish whether a damaged tyre can be repaired, or is suitable for retreading. A careful tyre inspection can therefore generate considerable cost-savings.

 

Establish the causes of damage

Removing a tyre from operation before complete wear represents a net loss. A close inspection of the tyre usually reveals the cause for its premature removal.

 

Decide on preventive action

Identifying the causes of damage allows appropriate preventative measures to be put in place. These measures will result from observations made on the site and are closely linked to the operating conditions.

Tyre inspection is an important procedure that can considerably reduce operating costs:

  • by identifying tyres that can be repaired or retreaded rather than scrapped;
  • by helping to identify measures which could limit the risk of damage.

The quality of the inspection will depend on the level of care and attention applied.

 

Tyre inspection procedure

Inspecting the tyre

For a thorough and efficient inspection, examine the tyre in the following order:

Tyre Inspection Procedure

  • the tread (1), which will give you some initial indications of the  conditions in which the tyre has been used.
  • the exterior of the first sidewall (2);
  • the interior of the opposite sidewall(3);
  • the bead of the first sidewall (4).

Proceed in the same order for:

  • the exterior of the opposite sidewall(5);
  • the interior of the opposite sidewall(6);
  • and finally the bead of the opposite sidewall (7).

A visual and manual examination should be used to search for possible distortions, tears and rough edges.

 

Inspection Tools

The minimum equipment for carrying out an inspection includes:

  • A pocket lamp;
  • grease chalk;
  • a measuring tape or ruler;
  • a tread depth gauge.

Inspection Tools

 

Tyre Handling equipment

Large tyres must be moved with the help of appropriate handling equipment.

For example, a truck equipped with a crane or a forklift truck equipped with a tyre-handler clamp or a loader equipped with a tyre-handler clamp

 

Tyre-manipulator on a truck

 

Necessary precautions

 

Protective equipment

During tyre-handling operations, it is essential to wear gloves, protective shoes and a hard hat.

During the inspection, the operator should also wear protective glasses.

If it is necessary to cut a tyre, it is advisable to wear a leather apron.

 

Securing

During tyre-handling operations and the inspection, the operator must ensure that the tyres are properly secured, and correct if necessary, every time the tyre is turned around or over.

Recommendation:

For sizes smaller than 21.00 R 25, it is preferable to carry out the inspection with the tyre in a vertical position and wedge it to prevent it rolling.

For larger sizes, the inspection can be carried out with the tyre lying horizontally on the ground.

IMPORTANT RECOMMENDATIONS: To allow a decision to be made about the condition of the casing, and its suitability for repair or retreading, the interior of the tyre must also be checked.

 

Further information

MICHELIN has developed a specific training module for tyre inspection. Your usual MICHELIN representative would be happy to present it to you.

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