Tire Repairers and Changers

Repair and replace tires.

Job Task

• Apply rubber cement to buffed tire casings prior to vulcanization process.
• Buff defective areas of inner tubes, using scrapers.
• Glue boots (tire patches) over ruptures in tire casings, using rubber cement.
• Hammer required counterweights onto rims of wheels.
• Inflate inner tubes and immerse them in water to locate leaks.
• Separate tubed tires from wheels, using rubber mallets and metal bars, or mechanical tire changers.
• Unbolt wheels from vehicles and remove them, using lug wrenches and other hand and power tools.
• Assist mechanics and perform other duties as directed.
• Clean sides of whitewall tires.
• Drive automobile or service trucks to industrial sites in order to provide services, and respond to emergency calls.
• Identify and inflate tires correctly for the size and ply.
• Order replacements for tires and tubes.
• Inspect tire casings for defects, such as holes and tears.
• Locate punctures in tubeless tires by visual inspection or by immersing inflated tires in water baths and observing air bubbles.
• Patch tubes with adhesive rubber patches, or seal rubber patches to tubes using hot vulcanizing plates.
• Place casing-camelback assemblies in tire molds for the vulcanization process, and exert pressure on the camelbacks to ensure good adhesion.
• Place wheels on balancing machines to determine counterweights required to balance wheels.
• Prepare rims and wheel drums for reassembly by scraping, grinding, or sandblasting.
• Raise vehicles using hydraulic jacks.
• Reassemble tires onto wheels.
• Remount wheels onto vehicles.
• Replace valve stems and remove puncturing objects.
• Roll new rubber treads, known as camelbacks, over tire casings, and mold the semi-raw rubber treads onto the buffed casings.
• Rotate tires to different positions on vehicles, using hand tools.
• Seal punctures in tubeless tires by inserting adhesive material and expanding rubber plugs into punctures, using hand tools.

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