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Maintenance Guide for Earthmover Tyres: Tyre Workshops

Maintenance Guide for Earthmover Tyres: Tyre Workshops

Presentation

This chapter provides information for the organisation of a tyre workshop on a mine or site using earthmover tyres.

Of course each site has its own particular working methods and restrictions concerning space and layout, because of this these recommendations
should be treated as guidelines.

They are equally applicable to established and mobile workshops. Depending on the size of the organization’s stock of tyres, the tyre workshop may  include a repair section. The organization of a repair workshop is not dealt with in this chapter.

 

Main principles

2 main principles apply to the organization of a tyre workshop:

  • limit tyre handling;
  • facilitate the tidiness and cleanliness of the area.

These 2 main principles contribute to safety in any tyre operation.

Organizaton

A tyre workshop should be divided into 3 areas:

TECHNICAL AREA: consisting of a “tyre operations” area and an “inspection” area

STORAGE AREA: tyres; other equipment; items awaiting processing/collection.

ADMINISTRATION AREA: In the following paragraphs, there is a description of how these different areas should be organised.

 

Technical area

Tyre operations area

An area where tyres are mounted/demounted on machines (vehicles).

The area must be flat and set up so that machines (vehicles) can be securely parked (Recommendation: a concrete area).

Sufficient space should be allowed for vehicles used to assist in mounting/demounting operations are able to move around the machine (vehicle).

Because we recommend washing any wheel prior to any operation, it would be advisable to install a water supply point near the “operations” area with adequate drainage.

Of course it is important to have a means of inflation available, either a compressor nearby or a sufficiently long air hose (3 meter as a minimum).

In the latter case, provide a hose reel to protect the hose when it is not in use. The compressor must have sufficient output (43 m3/h for a minimum pressure of 12 bar) and its tank must be large enough to cater for the size of tyre

 

Inspection area

This is where tyres are inspected (see the chapter on tyre inspection). Tyre supports and frame structures hold them during inspection.

Provide a frame structure in proportion to the largest tyre used on the site. (Tyre supports and frame structures hold the tyres during inspection.)

Provide an inspection lamp for examining the interior of the tyre.

The amount of space required is proportional to the largest tyre used on the site.

In this area, tyres should be handled by a lift truck (equipped with a tyre-handler) or by means of a hoist (equipped with straps).

 

Storage area

Tyre storage

The recommendations for storing tyres are given in the previous chapter. To avoid too many handling operations, the stock of tyres should be close to the tyre workshop.

Sufficient space should be allocated to the storage area to allow handling vehicles to manoeuvre easily.

Storage of other items
 
Tyre operations involve numerous items: locking rings - flanges - seals - valves - valve bases - inner tubes - flaps. These different items play an important role in the proper functioning of the tyre.

A few examples:

  • The locking ring holds the wheel’s detachable components together and forms an assembly;
  • The valve contributes to the tyre’s airtightness.

To ensure that these items remain in good condition, we recommend that:

  • they are kept in a clean, dry place, and carefully identified.
  • any item in poor or doubtful condition should be removed from stock. (A tyre worth several thousand euro should not be rendered unusable because of a part costing under a hundred euro.)

Storage pending processing or collection

Tyres destined for scrapping, retreading, regrooving or repair must be clearly identified and kept separate from the working stock.

It is strongly recommend that tyres destined for repair, regrooving or retreading are stored in a manner that prevents water, snow or any other element  entering and remaining inside the tyre.

 

Administration area

An office where the operators can refer to documentation or vehicle equipment charts is necessary. This is also where tyre records can be kept up to date.

 

Safety information

Equipment
 
The safety equipment must be in compliance with the local legal requirements and any stipulations specific to the site. The minimum equipment should include one or more C-type fire extinguishers, a sand box, a fire hose valve outlet or a fire hydrant and an emergency first-aid kit.

It is useful and recommended to display the safety instructions and numbers to phone in the event of an emergency.

 

Further information

MICHELIN may provide assistance for the organisation of your tyre workshop. Your usual MICHELIN representative would be happy to present it to you.

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