GILLIG LOW FLOOR, Руководство по обслуживанию

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Brakes & Wheels
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Tire Rotation
Generally it is the best practice to break in new tires on the front wheels. It is also generally advisable to
use tires with good nonskid tread design on the rear wheels.
Tires should be rotated at regular intervals so the maximum tire life is obtained. The position of tires
should be changed so that the direction of tire rotation is reversed.
Bias and Bias-Belted Tires
Change wheels without dismounting the tires so the direction of tire rotation will be reversed. The fol-
lowing system is suggested:
1. Right front to left rear inside or right rear outside.
2. If inside dual tires show more wear that the outside dual tires, place the front tires on the inside
when changing. In this case, the outside dual tires can be exchanged between the left and right
sides. If the outside dual tires show the excessive wear, place the front tires on the outside dual
tires when changing and, at the same time, interchange the right and left inside dual tires.
3. New tires should be placed on the front wheels where they run the coolest .
Tire Tubes and Flats
Tubes may fail as a result of being chafed or pinched by fabric breaks inside the tire. The direction and
shape of the tube damage will closely follow the pattern of the tire fabric break. A tire does not neces-
sarily go flat immediately when a fabric break occurs on the inside of the tire because it may take some
time for the break to chafe completely through the tube.
The tube may become chafed at a fold at the edge of the flap. When mounting tires requiring flaps, it is
essential that the flaps be properly centered between the beads to prevent folds or wrinkles. Discard flaps
which have once been twisted, creased, or folded over at the edges.
Any foreign material between the casing and the tube will cause a chafing action. In time, the tire or tube
or both will become badly damaged and fail. The result of grit, pebbles, or other hard substances which
become imbedded in the tire or tube wall will be chafing of the tube and eventual failure.
When a tube is larger than the inside of the casing it has become stretched and can become creased.
Creasing can also happen to a correctly sized tube when it is improperly mounted. If the crease occurs
in the flexing areas of the tire, the resulting additional thickness of the tube where it is folded creates a
hinging action which will cut the tube and may damage the tire fabric and result in a tire failure as well.
Tubes usually undergo some stretch or growth in service. When a used tube is mounted in a new or near-
ly new tire, a folded condition will usually result. The eventual result may be the failure of both the tire
and the tube. Therefore, it is usually more economical to ensure that new tubes are used with new tires.