11-03-1
Wheels and Tires—Two-Piece Rims
11-03-1
PART 11-03 Wheels and Tires-Two-Piece Rims
Applies to F-250-F-350 Vehicles
COMPONENT INDEX
TIRE REMOVAL
AND MOUNTING-
Two-Piece Rims
Page
03-1
COMPONENT INDEX
TIRE REMOVAL
AND
MOUNTING
-
Two-Piece Semi-Drop
Center Rims
Page
03-2
DESCRIPTION
Two-piece rims are used on disc and
cast wheels with tube-type tires only.
Refer to Part 11-01 for safety
procedures and illustrations.
REMOVAL AND INSTALLATION
The tire must be completely deflated
before removal, and the bead must not be
damaged by a tire iron.
After installation, a tube tire should
be inflated to recommended pressure,
deflated, and then inflated again to insure
that the tube is not folded inside the tire.
Be sure the tube flap is properly
positioned before inflating the tire.
It is recommended that tire-changing
equipment be used in changing all truck
tires.
See Safety Precautions in Part
11-01.
TIRE REMOVAL AND
MOUNTING—TWO-PIECE RIM
Removing Tire from Wheel
If no tire-changing machine is
available, remove tire as detailed in
following Steps.
1.
First, remove valve core and
completely deflate the tire. Then,
place the wheel (ring side up) on the
floor. Insert the hook end of the rim
tool between the ring flange and the
tire and press downward on bead.
Continuing around the ring, pry the
tire off the tapered seat of the ring
(Fig. 1).
2.
To remove the
ring,
insert the straight
end of the
rim
tool into the notch, and
force ring opposite the notch down
with foot, and pry off. Be careful not
to bend side ring.
3.
Force upper tire bead into well
opposite the valve slot and with tire
tool pry opposite portion of bead over
edge of rim.
F1460-B
FIG.
1 Removing Rim and Removing
Tire—Two-Piece Rim
4.
Stand assembly in vertical position.
Lubricate second bead. At top of
assembly insert straight end of tool
between bead and back flange of rim
at about a 45 degree angle. Turn tool
so that it is perpendicular to rim. Pry
second bead off.
5.
Turn tire over. With rim tools, loosen
bead on opposite bead seat. This can
be further aided by using foot
pressure.
Make sure one portion of second
bead is still in the rim well, then pry
opposite portion of bead over edge of
rim. This will free the tire from the
rim.
Mounting Tire to Wheel
1.
Place tire on rim so that valve is in
line with rim slot and insert valve
through the slot (Fig. 2). Force first
bead down into
well
of
rim
just to side
of valve. Mount
first
bead over
rim
lip
with rim tool, progressing around the
tire.
F1027-B
FIG.
2 Positioning and Starting
Ring—Two-Piece Rim
2.
To apply second bead, start at point
opposite valve and press tire bead
over
rim
lip
and into
rim
well
(Fig.
3).
Mount remainder of bead over
rim
lip
by means of thin tire tool, being
careful not to pinch
tube.
If necessary,
insert second tire tool and lubricate
last 6 inches of bead before
completing mounting.
F1028-B
FIG.
3 Installing and Checking
Ring—Two-Piece Rim
3.
Place half of side ring under the rim
lip with cutaway portions in position
as shown. Insert thin end of rim tool
or heavy screwdriver and pull ring
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