TRUCK SERVICE MANUAL
WHEELS, RIMS, TIRES
the first trip or any wheel change. Properly installed they
should remain tight indefinitely. On cast wheels which
have rims that are demountable with the tire, the rim
clamp nuts should also be kept tight. Rim and tire to
wheel alignment should be checked frequently to make
sure the tire is running true. Left-hand thread nuts can
be identified by the small groove machined around the
flats. Lefthand studs can be identified by the letter "L"
stamped on the head. Use left-hand nuts on the left side
of the truck.
NOTE: Rust streaks (Fig. 8) from stud holes is a good
indication that mounting nuts are not tightened to the
NOTE: Before mounting wheel assemblies on vehicle
make sure all parts are clean and free from foreign
matter. Excess paint on wheel stud hole perimeters can
permit wheel mounting nuts to loosen with use.
RIM TIGHTENING AND ALIGNMENT
When installing demountable rims, be certain
stud threads are clean to permit correct torquing of nuts.
NOTE: Do not use any type of lubrication on threads
except when installing aluminum wheels.
With rims in position (valve stem 180 degrees
On disc wheels, which have rims integral with the
apart) successively tighten opposite nuts to assure
wheel itself, the important thing to note is that the wheel
drawing wheel (or wheels) in evenly. This procedure will
stud nuts must be kept tight. This means they should be
also minimize wheel mis-
inspected and tightened at regular intervals. When
checking the mounting studs and nuts on dual disc
wheels, (Fig. 9) the outer nut should be backed off before
attempting to tighten the inner nut. Try all cap nuts after