Things You'll Need
Squeaking wheels on a rolling tool cart, shopping cart or stroller are annoying and irritating. The wheels on any cart need a little maintenance now and then to keep them quiet. In most cases, the wheels and wheel mechanisms simply need a little lubrication to stop the wheels from squeaking. The wheels of carts that get a lot of wear and tear eventually need to be replaced, though, because lubricating a damaged wheel won't accomplish much.
Inspect the nuts and bolts that secure the wheels to the cart. If the wheel is loose, the nuts and bolts need to be tightened with an adjustable wrench.
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Replace bent or worn-out wheels. New wheels for carts and strollers may be purchased online or at a home-improvement store. Loosen the nuts and bolts and remove the damaged wheel and install the replacement.
Apply a lubricant and penetrating oil, such as WD 40, using the extension tube provided to spray accurately into small spots. Spray each of the wheels, bearings, and axles with the lubricating oil, allowing the oil to penetrate the wheel and wheel mechanisms for five minutes. Push the cart a few feet and apply a little more lubricating oil to the wheel, if the squeak persists.