Tire Builders — Tasks

Task statements

• Measure tires to determine mold size requirements.
• Build semi-raw rubber treads onto buffed tire casings to prepare tires for vulcanization in recapping or retreading processes.
• Trim excess rubber and imperfections during retreading processes.
• Fill cuts and holes in tires, using hot rubber.
• Place tires into molds for new tread.
• Fit inner tubes and final layers of rubber onto tires.
• Buff tires according to specifications for width and undertread depth.
• Brush or spray solvents onto plies to ensure adhesion, and repeat process as specified, alternating direction of each ply to strengthen tires.
• Start rollers that bond tread and plies as drums revolve.
• Align treads with guides, start drums to wind treads onto plies, and slice ends.
• Inspect worn tires for faults, cracks, cuts, and nail holes, and to determine if tires are suitable for retreading.
• Roll hand rollers over rebuilt casings, exerting pressure to ensure adhesion between camelbacks and casings.
• Position ply stitcher rollers and drums according to width of stock, using hand tools and gauges.
• Cut plies at splice points, and press ends together to form continuous bands.
• Depress pedals to rotate drums, and wind specified numbers of plies around drums to form tire bodies.
• Clean and paint completed tires.
• Rub cement sticks on drum edges to provide adhesive surfaces for plies.
• Depress pedals to collapse drums after processing is complete.
• Wind chafers and breakers onto plies.
• Pull plies from supply racks, and align plies with edges of drums.