Chevrolet 10 1971 Series Chassis Service Manual page 375

Fig. 8— Lubricating Tire Bead
Mounting (6.50-16 tires)
1. Use present tire machines or standard tire irons fol­
lowing the same procedure used in mounting tube
type tires, however, extreme care must be exercised
to prevent injury to the sealing bead when forcing
tire over the rim. A slight application of rubber lu­
bricant on the last 1/2" of each bead circle to be
mounted will ease mounting.
2. With tire beads still unseated, rotate tire on wheel
so that balance mark on tire lines up with the valve
stem.
3. Start tire beads into the rim bead seats as follows:
If a tire mounting machine is being used, lift the tire
high in the rim forcing the top tire bead against the top
rim flange seating the top bead. The lower bead will be
seated by the tire weight.
When a tire mounting machine is not being used, beads
may be seated by holding the tire and wheel assembly in
Fig. 9— W orking Bead onto Rim
Fig. 10— Working Second Bead onto Rim
a vertical position and bouncing on the floor at various
points about the tire circumference.
4. Install valve core and inflate tire with quick "shots"
of air to firmly seat the sealing beads.
5. Insure that air pressure build-up during the bead
seating process is not allowed to exceed 30 pounds
pressure.
If beads have not seated by the time pressure
reaches 30 pounds, assembly should be deflated, re­
positioned on rim, re-lubricated and re-inflated.
WHEELS AND TIRES 10-7
10-30 CHEVROLET TRUCK SERVICE MANUAL