Truing Rim Sideways And Centering Wheel

Removing Tire £>cm Rim

1. Remove wheel; lay wi...• •, on its side. (See "Removing Front Wheel," "Removing Rear Wheel" and "Removing Sidecar Wheel," Page 147.

2. Remove valve cap and valve core to free all air from tube. Remove valve stem nut (18" rim).

3. Loosen both beads from rim flanges by stepping on sides ot tire or by using a tire tool. Stand or kneel on tire opposite valve to push bead into rim-well.

4. Using tire tools (not sharp instruments) start upper bead over edge of rim at valve. Don't use force when starting bead over edge of rim with tire iron, because bead wires may be. broken or stretched and tire ruined. Carefully remove inner tube before attempting to remove second bead.

5. Push lower bead into rir,. veil an one side and insert tire iron on opposite t-ide and pry bead over flange. After a portion of second bead is started over rim edge, tire can be nirther removed from rim without aid of tire iron.

6. It is not always necessary to completely remove casing from rim. Removing one side only, allows inner tube to be removed and reinstalled and also allows inside of casing to be inspected.

Mounting Tire on Rim

1. Before installing tube in tire, all dust and dirt, particularly hard particles which might chafe an inflated tube, must be carefully removed. Wipe tube and inside of tire thoroughly with clean, dry cloth. If rim is dirty or rusty clean it with a stiff wire brush. Be sure to examine a used tire carefully for fabric injuries which, if neglected, will damage tube.

2. Before mounting tire, see that rubber rim strip is in place in rim-well, and that rim strip valve hole registers with valve hole in rim.

Tire balance mark on Firestone tires is a red triangle and on Goodyear tires a red dot.

Natural Rubber Tube -.

3. Insert tube in tire, (placing valve at tire balance mark) and inflate just enough to round it out. With wheel lying flat, place tire on rim and align valve with hole in rim.

4. Push bottom bead into rim-well near valve and hold in well while forcing remaining portion of bead over rim flange with a tire tool.

5. Spread tire and insert valve through hole in rim.

6. Force upper bead over rim flange and into well at point opposite valve. Stand or kneel on this side of tire to hold it in well and pry remaining portion of tire over rim flange. While forcing bead over rim flange, keep as much bead as possible in rim-well. Be careful not to damage beads or pinch tube. Inflate tire to recommended pressure and check valve for leak. See "Tire Inflation Pressures," Page 3.

Synthetic Rubber Tube:

Synthetic tubes do not have the same stretching qualities as natural rubber tubes have. They are much more inclined to split and tear; therefore, synthetic tubes must be free from all strains and stresses after installing and inflating for operation.

7. Dust tube, inside of tire and rim strip that covers spoke ends, with soapstone powder. Insert tube in tire, (placing valve at tire balancing mark) and inflate just enough to round it out. Using a brush or cloth swab, apply a solution of neutral vegetable oil soap for lubricating tube and inside of tire about a third of the way up from bead toe; also face of rim strip that covers spoke ends, rather than to depend entirely upon soapstone, because soap suds lubricate more effectively and better assure tube properly shaping itself to rim-well without undue adhesion, stretch or strain. Do not allow soap solution to run into crown of tire. If, however, no vegetable oil soap is available, use soapstone powder more freely. Be careful, however, not to use so much that it accumulates in casing.

When mounting tire on rim, follow standard procedure as outlined under "Natural Rubber Tube." However, after inflating to recommended pressure, completely deflate to smooth out any wrinkles in tube and allow tube to find its place, free from strain or stress. Again inflate to recommended pressure and check valve for leak.

8. Reinstall wheel.

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