2D-5 Wheels and Tires:
Wheel Discs Inspection
Inspect each wheel disc for dents, distortion and cracks.
A disc in badly damaged condition must be replaced.
Wheel Balance Inspection and Adjustment
Refer to "Balancing Wheels Description".
Deposits of mud, etc. must be cleaned from inside of rim.
Stones should be removed from the tread in
order to avoid operator injury during spin
balancing and to obtain good balance.
Each tire should be inspected for any damage, then
balanced according to equipment manufacturer's
Most electronic off-vehicle balancers are more accurate
than the on-vehicle spin balancers. They are easy to use
and give a dynamic (two plane) balance. Although they
do not correct for drum or disc unbalance as does on-
vehicle spin balancing, this is overcome by their
accuracy, usually to within 1/8 ounce.
On-vehicle balancing methods vary with equipment and
tool manufacturers. Be sure to follow each
manufacturer's instructions during balancing operation.
Wheel spin should be limited to 55 km/h (35
mph) as indicated on speedometer.
This limit is necessary because speedometer
only indicates one-half of actual wheel speed
when one drive wheel is spinning and the
other drive wheel is stopped.
Unless care is taken in limiting drive wheel
spin, spinning wheel can reach excessive
speeds. This can result in possible tire
disintegration or differential failure, which
could cause serious personal injury or
extensive vehicle damage.
For vehicle equipped with ABS, using on-
vehicle balancing method with ignition
switch ON may set malfunction diagnostic
trouble code (DTC) of ABS even when system
is in good condition.
Never turn ignition switch ON while spinning
To equalize wear, rotate tires periodically as shown in
Refer to "Wheel (with Tire) Removal and Installation".
Wheel (with Tire) Removal and Installation
Never use heat to loosen tight wheel because
the application of heat to wheel causes the
wheel life shorter and the wheel bearing
1) Loosen wheel nuts by approximately 180° (half a
2) Hoist vehicle.
3) Make sure that the vehicle will not fall off by trying to
move vehicle body in both ways.
4) Remove wheel nuts except one.
5) Support the wheel and/or tire not to drop the wheel
and then remove the nut left with the wheel.
For installation, reverse removal procedure, noting the
• Wheel nuts must be tightened in sequence and to
specified torque to avoid bending wheel or brake disc
or drum as shown in the figure.
Before installing wheels, remove any build-
up of corrosion on wheel mounting surface
and brake disc or drum mounting surface by
scraping and wire brushing. Installing wheels
without good metal-to-metal contact at
mounting surfaces can cause wheel bolts to
loosen, which can later allow a wheel to
come off while vehicle is moving.