Repair and replace tires.
<ul><li>Raise vehicles, using hydraulic jacks.</li><li>Remount wheels onto vehicles.</li><li>Place wheels on balancing machines to determine counterweights required to balance wheels.</li><li>Unbolt and remove wheels from vehicles, using lug wrenches or other hand or power tools.</li><li>Identify tire size and ply and inflate tires accordingly.</li><li>Reassemble tires onto wheels.</li><li>Replace valve stems and remove puncturing objects.</li><li>Hammer required counterweights onto rims of wheels.</li><li>Seal punctures in tubeless tires by inserting adhesive material and expanding rubber plugs into punctures, using hand tools.</li><li>Locate punctures in tubeless tires by visual inspection or by immersing inflated tires in water baths and observing air bubbles.</li><li>Inspect tire casings for defects, such as holes or tears.</li><li>Assist mechanics and perform various mechanical duties, such as changing oil or checking and replacing batteries.</li><li>Glue tire patches over ruptures in tire casings, using rubber cement.</li><li>Rotate tires to different positions on vehicles, using hand tools.</li><li>Clean and tidy up the shop.</li><li>Order replacements for tires or tubes.</li><li>Buff defective areas of inner tubes, using scrapers.</li><li>Separate tubed tires from wheels, using rubber mallets and metal bars or mechanical tire changers.</li><li>Inflate inner tubes and immerse them in water to locate leaks.</li><li>Clean sides of whitewall tires.</li></ul>