"Tire Builder" - Part 1
Job Description, Duties and Jobs

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Duties / Tasks	Activities	Skills	Abilities	Knowledge

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Basic Job Description:

Operate machines to build tires from rubber components.

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Job Duties and Tasks for: "Tire Builder"

Measure tires to determine mold size requirements.

Position ply stitcher rollers and drums according to width of stock, using hand tools and gauges.

Position rollers that turn ply edges under and over beads, or use steel rods to turn ply edges.

Pull plies from supply racks, and align plies with edges of drums.

Rub cement sticks on drum edges to provide adhesive surfaces for plies.

Start rollers that bond tread and plies as drums revolve.

Wind chafers and breakers onto plies.

Build semi-raw rubber treads onto buffed tire casings in order to prepare tires for vulcanization in recapping or retreading processes.

Clean and paint completed tires.

Inspect worn tires for faults, cracks, cuts and nail holes, and to determine if tires are suitable for retreading.

Place rebuilt casings in molds for vulcanization processes.

Place tires into molds for new tread.

Roll camelbacks onto casings by hand, and cut camelbacks, using knives.

Roll hand rollers over rebuilt casings, exerting pressure to ensure adhesion between camelbacks and casings.

Select camelbacks according to specified tire widths and tread thicknesses, and whether tires are to be retreaded or recapped.

Spray tires with vulcanizing cement.

Trim excess rubber and imperfections during retreading processes.

Activate bead setters that press prefabricated beads onto plies.

Align treads with guides, start drums to wind treads onto plies, and slice ends.

Brush or spray solvents onto plies to ensure adhesion, and repeat process as specified, alternating direction of each ply to strengthen tires.

Cut plies at splice points, and press ends together to form continuous bands.

Depress pedals to collapse drums after processing is complete.

Depress pedals to rotate drums, and wind specified numbers of plies around drums to form tire bodies.

Fill cuts and holes in tires, using hot rubber.

Fit inner tubes and final layers of rubber onto tires.