Einleitung
If you find yourself having to constantly pump air into the rear tire on your 1982 Schwinn World Sport, then this guide is for you.
The tubing on a bike wheel is not visible on the outside of the bike and surrounds the tire rubber visible on the outside of the bike.
When the tubing is punctured, this will often lead to very low tires or could even cause the tubing to explode. Replacing the tubing on this vintage bike is slightly more difficult than modern bikes because this bike uses nuts rather than a quick-release lever.
Before starting this guide, be sure to inspect and remove any objects that may have punctured your tires such as glass, nails, rocks, etc.
Werkzeuge
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Shift the bike into the smallest gear.
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Move the bike pedals forward with your hands or ride the bike to make sure the gears change.
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Remove the nuts and bolts.
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Feed the chain by rotating the wheel and move the chain away from the gear.
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Pull out the back wheel and make sure the chain remains attached to the frame of the bike.
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Loosen the tire using a tire lever.
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Push the tire lever into the crease of where the metal meets the rubber of the tire.
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Push the lever along the crease of the tire.
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Place the wheel on a small rag to prevent scratching the rims.
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Pull out the tubing.
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Remove the valve from the rim by pushing it down into the hole.
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Remove the tubing.
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Place the new tube over the bike rims.
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Look for the small hole in the rims.
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Insert the valve.
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Insert the rest of the tubing.
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Tuck the tires back into the rims.
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Inflate the new tire.
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Insert the end of the bicycle pump into the valve of the new tire valve.
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Lock the pump into place using the lever at the end of the pump.
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Pump the tire until the pump reads roughly 75 psi.
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Attach the back wheel onto the bike.
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Feed the chain back onto the pedal gear and the back-wheel gears.
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Straighten out the tire with the blunt end of the hammer.
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Tighten the nuts and washers using the 15mm sprocket wrench on one side and the 15mm wench on the other.
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