SM 1970 4-00
Section 160-0050
3
Rear Axle Group - Wheel Rim and Tyre
WARNING
When lifting tyre from the rim, be sure the
equipment is of sufficient capacity and properly
secured to do the job safely.
1. Remove valve cap (7, Fig. 1) and valve core and
leave valve open to prevent trapping of air in tyre. Tape
valve threads for protection.
2. If used, remove driver (2) from bead seat band (3)
and wheel rim (5).
3. Break outer tyre bead loose with pry bar shown in
Fig. 3.
4. Insert flat hooked end of pry bar into breaking slots
between bead seat band (3) and outer flange (1). See
Fig. 4. A pipe over the straight end of the pry bar will
increase leverage.
5. Twist pry bar toward tyre to break bead.
6. A second pry bar may be inserted in the space
between bead seat band (3) and outer flange (1). Twist
the second pry bar to maintain the space gained by the
first pry bar.
7. Move the first pry bar around wheel rim (5), twisting
and following with the second pry bar, until the outer
tyre bead is loose.
8. Pry bead seat band (3) away from lock ring (4) by
placing hooked end of pry bar in the groove of wheel
rim (5), between ends of lock ring (4), and prying up
with the pry bar. Using two pry bars, as in Step 7, work
completely around wheel rim (5).
9. Pry lock ring (4) out in the same manner by starting
at prying notch in wheel rim (5) assembly, and work all
the way around wheel rim (5) with two pry bars.
10. Remove and discard 'O' ring (2, Fig. 1).
11. Remove lock ring (4) then pry out and remove bead
seat band (3).
12. Breaking slots are provided inside the rims. The
inner bead may be broken as described in Steps 4
through 8. If the tyre and rim assembly is on the
vehicle, the following procedure may be used for
breaking the inner bead.
13. Place jack between inner flange (6) and vehicle
frame. Extend jack until tyre bead is broken. Continue
around the rim until tyre bead is broken at all points.
14. Using suitable lifting equipment, remove tyre from
rim. This completes the removal of the tubeless tyre.
15. If necessary, remove inner flange (6).
Note: If tyre rim is on the vehicle, and no tyre lifting
equipment is available, 'walk' the tyre off the rim as
follows:
Force bottom of tyre outward as far as possible; lower
jack enough to allow weight of tyre to rest on ground;
force top of tyre out as far as possible; raise jack to
original height and repeat the above until the tyre is off
the rim.
INSPECTION
Tyre
Check the interior surface of the tyre to determine its
condition. Inspect for cuts or fabric breaks that have
penetrated the tyre body. The casing should be
inspected closely for any sharp , pointed object that
may have penetrated the tyre body but is invisible from
the outside. All dust, dirt, water or other foreign matter
should be cleaned from the inside of tyre.
Rim Assembly
Overloading, improper tyre inflation, rough terrain, high
speed, accidents, dirt accumulation, and corrosion all
tend to reduce the service life of rims and rim
components. It is recommended that rims be
inspected, as below, not less often than at every tyre
change and that, as the warranty limit approaches,
consideration be given to periodic replacement.
The rim and its components are designed with built-in
safety factors, to prevent the components from flying
off with killing force during inflation. Check
components for cracks, bends, distortion, or other
damage. If damage is found, the component must be
replaced.
WARNING
Never mix components of one manufacturer's
rims with those of another. Using the rim base
of one manufacturer with the lock ring of
another or vice versa is dangerous. The lock
ring of one may not fully engage with the lock
ring groove of the other. Always consult the
rim manufacturer for proper matching and
assembly instructions.
Courtesy of Machine.Market
To Next Page
Loading...
