Road Bike Presta Valve Inner Tube Replacement

简介

This guide covers how to replace an inner tube with Presta valve on a Fuji road bike.

Bikes are one of the most common forms of transportation, and they require frequent maintenance if they are to remain at their peak condition. The inner tube cushions the bike tire from impacts, and it helps the bike absorb shock from a rough and bumpy terrain. Punctures, manufacturing defects, or changing tire size are among the many reasons one should know how to replace the inner tube of a bike. Luckily, this a process that is quick and not too complex, so any person with a tire lever and an air pump can do it.

Once you have completed the steps, be sure the inner tube is inflated to the correct pressure. Now you should be able to enjoy a smooth ride once again!

你所需要的

步骤 1 Presta Valve Inner Tube

Road Bike Presta Valve Inner Tube Replacement, Presta Valve Inner Tube: 步骤 1 中的图像 1，2

Road Bike Presta Valve Inner Tube Replacement, Presta Valve Inner Tube: 步骤 1 中的图像 2，2

Flip the bike upside down.

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步骤 2

Road Bike Presta Valve Inner Tube Replacement: 步骤 2 中的图像 3，3

Find the Presta valve of the tire, then remove the cap by turning counter-clockwise.

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步骤 3

Road Bike Presta Valve Inner Tube Replacement: 步骤 3 中的图像 3，3

Twist the tip of the Presta valve counter-clockwise.

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步骤 4

Press firmly on the valve to release the air in the tube.
Hold firmly until there is no more air left.

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步骤 5

Lift the lever on the brake assembly of the wheel to release the brakes.

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步骤 6

Road Bike Presta Valve Inner Tube Replacement: 步骤 6 中的图像 3，3

Unscrew the cap of the front wheel spoke by turning it counter-clockwise.

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步骤 7

Firmly grab the lever on the other side of the spoke and lift it up.

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步骤 8

Road Bike Presta Valve Inner Tube Replacement: 步骤 8 中的图像 3，3

Grab the top of the wheel, and gently lift it off the frame of the bike.

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步骤 9

Road Bike Presta Valve Inner Tube Replacement: 步骤 9 中的图像 3，3

Find the Presta valve, and unscrew the nut at the bottom of the Presta valve.

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步骤 10

Road Bike Presta Valve Inner Tube Replacement: 步骤 10 中的图像 3，3

Insert the two tire levers on the opposite side of the Presta Valve, placing each one about 10 inches apart.
The side the levers are on doesn't matter, but ensure both levers are on the same side of the wheel.

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步骤 11

Push both tire levers down until the tire lifts off the rim.

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步骤 12

Road Bike Presta Valve Inner Tube Replacement: 步骤 12 中的图像 3，3

Firmly push the side of the tire that is off the rim.
Repeat the action of pushing around the entire wheel until one side of the wheel is off the rim.

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步骤 13

Road Bike Presta Valve Inner Tube Replacement: 步骤 13 中的图像 3，3

Grab the inner tube from the inside of the tire, and pull the rest of the tube out.
Remove the inner tube from the wheel by pulling the part of the tube that is attached to the Presta Valve until the valve slides out from the wheel.

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步骤 14

Road Bike Presta Valve Inner Tube Replacement: 步骤 14 中的图像 3，3

With the new tube, insert the Presta valve into the hole of the rim.
If there is a nut on the Presta Valve, make sure it is off before you insert the tube into the rim.

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步骤 15

Starting from where the valve is, push the side of the tire that was off the rim back onto the rim, making sure the tube is inside the tire.
Repeat this going down the right side of the tire, stopping at halfway point of the rim.

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步骤 16

Push in the tire from the left side of the rim, and repeat this going down the rim until it gets too difficult to push anymore.

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步骤 17

Road Bike Presta Valve Inner Tube Replacement: 步骤 17 中的图像 3，3

Insert the tire lever before the last bit of the tire that is not in the rim.
Grab the rim with one hand, and use your other hand to grab the tire lever and push down until the tire is back on the rim.

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