22
MAINTENANCE
Mounting and Demounting Tires on Rims
or Disc Wheels
The following points must be considered when
changing or repairing tires on rims or disc wheels.
WARNING
Mounting and demounting of tires must be
done by trained personnel only!
Always use industry approved procedures.
1. Do not mix rim or wheel components. They may
come apart during inflation.
2. Check the rim base, side rings and lock rings for
cracks or other damage. Do not attempt to repair rims
or disc wheels. Scrap damaged parts.
3. Match the duals (see page 21).
4. Use only correct rim sizes.
5. Keep rims clean and painted to avoid corrosion.
6. Use proper valve stems and extensions. If valve
spacers are used, be sure they are in place before reas-
sembling.
7. Do not overinflate tires.
WARNING
Use properly constructed cages, guards or
baskets when inflating tires.
Tires are to be mounted by trained service
personnel only!
8. When the tires are worn, the tube will also be worn.
Replace the tube. Use the proper size tube.
9. Replace chafed, pinched, stretched or creased
tubes.
10. Replace twisted, creased or folded flaps.
Mounting Tire and Rim Assemblies
Place the inside tire and rim on the wheel.
NOTE: If the inside tire and rim were not removed,
be sure the side ring and/or lock ring are seated properly.
Install the valve core, but do not inflate the tire.
Put on the spacer band and the outside tire and rim.
Put on the rim clamps and nuts. Tighten to the torque
and in the sequence shown in
Figure 8
.
NOTE: Tighten in several stages to avoid distorting
the rim. If the inside tire and rim were not removed,
inflate the tire to the proper pressure.
Mounting Tire and
Hub Piloted Type
Disc
Wheels
Before mounting the disc wheel, clean the mounting
face of dirt and excess paint.
Place the inside tire and disc wheel assembly on the
hub. Place the outside tire and disc wheel assembly on
the hub and start the flange nuts. Valve stems for the two
wheels should be mounted in different circumferential
positions for easy inflation. Tighten the flange nuts to the
torque and in the sequence shown in
Figure 13
. If the
inside tire and disc wheel assembly was not removed,
inflate the tire to the proper pressure.
Mounting Tire and
Ball Seat Type
Disc Wheel Assemblies
Before mounting the disc wheel, clean the mounting
face of dirt and excess paint.
WARNING
Mounting faces which have been damaged
must be repaired or replaced.
Right-hand threads are on the right side of the ve-
hicle, and left-hand threads are on the left side.
Place the inside tire and disc wheel assembly on the
hub and start the inner cap nuts. Tighten the inner cap
nuts to the torque and in the sequence shown for your
arrangement (see
Figure 18
). Tighten in several stages
to avoid distortion of the disc.
NOTE: If the inside tire and disc wheel assembly was
not removed, tighten the inner cap nuts as described. Be
sure the side ring and/or lock ring are seated properly.
Install the valve core, but do not inflate the tire.
Place the outside tire and disc wheel assembly on the
hub and start the outer cap nuts. Valve stems for the two
wheels should be mounted in different circumferential
positions for easy inflation. Tighten the outer cap nuts
to the torque and in the sequence shown in
Figure 18
.
If the inside tire and disc wheel assembly was not re-
moved, inflate the tire to the proper pressure.
