Jeep J-10 Series 1982 Technical & Service Manual page 853

TIRE OR WHEEL TRAMP
OR WHEEL HOP
AOO BALANCE
WEIGHTS HERE
CORRECTIVE WEIGHT
LOCATION
WHEELS AND TIRES 2H-9
70227
Fig. 2H-11 Static Unbalance
HEAVY SPOT
WHEEL SHIMMY
AND VIBRATION
ADD BALANCE
WEIGHTS HERE
CORRECTIVE WEIGHT
LOCATION
70226
Rg. 2H-12 Dynamic Unbalance
Since procedures vary with different machines, follow
the equipment manufacturers operating instructions ex
plicitly to obtain satisfactory results.
WARNING: On-vehicle type wheel balancers may be
used on the rear wheels of vehicles equipped with a
Trac-Lok differential, but only after raising the rear end
and removing the wheel opposite the one being balanced.
In addition, do not exceed 35 mph (56 km/h) on the
speedometer when spinning wheels. As a result of dif
ferential action, actual wheel speed is double the speed
indicated on the vehicle speedometer. The centrifugal
force generated by a tire spinning at high speed could
cause damage and personal injury.
Wheel and Tire Runout
Excessive radial or lateral runout of a wheel or tire
can cause roughness, vibration, tramp, tire wear, and
steering wheel tremor.
Before checking runout, drive the vehicle for at least 7
miles to remove temporary flat spots that may have
formed in the tires. Flat spots must be removed to avoid
false readings when measuring runout.
Measure runout using a dial indicator. All measure
ments should be made on the vehicle with the tires
inflated to recommended levels and with the wheel bear
ings adjusted to specifications.
Measure radial runout at the center and outside ribs
of the tread face (Hg. 2H-13). Measure lateral runout at
the tire sidewall just above the buffing rib on the side-
wall (fig. 2H-13).
On conventional tires, radial runout should not exceed
0.105 inch (2.66 mm) and lateral runout should not ex
ceed 0.080 inch (2.03 mm). Mark the high points of lat
eral or radial runout for reference.
RADIALLY
LATERALLY 41412
Rg. 2H-13 Mnsortng Tin Rssest