Chevrolet 10 1971 Series Chassis Service Manual page 374

WHEELS AND TIRES 10-6
Fig. 4— Inserting Tire Iron to Lift Bead
to rim. With wide side of rim down, apply tire lu­
bricant to top bead. With stops toward rim, insert
spoon ends of two tire irons about 10" apart. While
standing on tire to hold bead in gutter, pull one tool
toward center of rim (fig. 4).
2. Hold one iron in position with foot and pull second
iron toward center of rim. Progressively work bead
off rim, taking additional bites if necessary (fig. 5).
3. Stand assembly in vertical position. Lubricate sec­
ond bead. At top of assembly insert straight end of
tire iron between bead and back flange of rim at
about a 45 degree angle (fig. 6).
4. Turn iron so that it is perpendicular to rim. Pry
second bead off (fig. 7).
Mounting (all except 6.50-16 tires)
All tubeless tires except the 6.50-16 size will be
mounted as follows:
Fig. 5— Lifting Bead O v e r Rim
Fig. 6— Inserting Tire Iron in Second Bead
1. Inspect rim to insure bead seats are clean and
smooth. Then place rim on floor with wide side
down and lubricate first bead of tire and upper bead
seat of rim (fig. 8).
2. Push first bead into well of rim and onto rim as far
as possible. Using straight end of tire iron and with
stop resting on rim flange, work remaining section of
first bead over rim (fig. 9).
3. Hold second bead in well by standing on tire. When
necessary, push section of bead into rim well and
anchor with vise-grip pliers by pinching pliers on
rim flange. Using spoon end of tire iron with stop
toward rim, work progressively around bead using
small bites until bead slips over flange onto rim
base. If necessary, insert second tire iron and
lubricate last 6" of bead before completing mounting
(fig. 10).
4. Check valve to be certain that hex nut at the valve
base is tight. Inflate tire to recommended operating
pressure. Check assembly for air leaks.
Fig. 7— Prying Second Bead from Rim
10-30 CHEVROLET TRUCK SERVICE MANUAL