Repairing Leaks - Jeep cherokee 2000 Service Manual

XJ
SERVICE PROCEDURES (Continued)
Before dismounting a tire from its wheel, a refer-
ence mark should be placed on the tire at the valve
stem location. This reference will ensure that it is
remounted in the original position on the wheel.
(1) Use a dial indicator to locate the high spot of
the tire on the center tread rib (Fig. 7). Record the
indicator reading and mark the high spot on the tire.
Place a mark on the tire at the valve stem location
(Fig. 8).
Fig. 7 Dial Indicator
Fig. 8 First Measurement On Tire
1 – REFERENCE MARK
2 – 1ST MEASUREMENT
HIGH SPOT MARK TIRE AND RIM
3 – WHEEL
4 – VALVE STEM
(2) Break down the tire and remount it 180
degrees on the rim (Fig. 9).
Fig. 9 Remount Tire 180 Degrees
1 – VALVE STEM
2 – REFERENCE MARK
(3) Measure the total runout again and mark the
tire to indicate the high spot.
(4) If runout is still excessive use the following
procedures.
(a) If the high spot is within 101.6 mm (4.0 in.)
of the first spot and is still excessive, replace the
tire.
(b) If the high spot is within 101.6 mm (4.0 in.)
of the first spot on the wheel, the wheel may be out
of specifications. Refer to Wheel and Tire Runout.
(c) If the high spot is NOT within 101.6 mm (4.0
in.) of either high spot, draw an arrow on the tread
from second high spot to first. Break down the tire
and remount it 90 degrees on rim in that direction
(Fig. 10). This procedure will normally reduce the
runout to an acceptable amount.

REPAIRING LEAKS

For proper repairing, a radial tire must be removed
from the wheel. Repairs should only be made if the
defect, or puncture, is in the tread area (Fig. 11). The
tire should be replaced if the puncture is located in
the sidewall.
TIRES AND WHEELS 22 - 5