TRUCK SERVICE MANUAL
WHEELS, RIMS, TIRES
to clean an injury if a power buffer equipped with a fine
cleaned surface area. Remove all traces of
wire brush is used. Care must be taken not to buff
lubricant, foreign material, etc. Do not use more
through the innerliner. Clean the awl needle and dip in
solvent after buffing.
self-vulcanizing fluid and from the inside of the tire, force
the needle through the puncture until the point extends
The next three steps apply only to the hot patch method.
5. Remove backing from patch and carefully center
beyond the tread (Fig, 15).
it over injury. Place a clamp over patch and
3. Remove the detachable handle from the needle.
tighten clamp only finger tight (Fig. 18).
Cut a 3.175 mm (1/8") strip of filler rubber and
6. Ignite patch and allow it to cool for at least 15
place it into the hole of the needle with the end of
minutes or until cool to the touch. Carefully
the rubber strip extending beyond the needle.
remove metal pan and ashes remaining in tire.
Pull needle through the tire with a pliers (Fig. 16).
7. Remount tire. Inflate to recommended operating
Filler rubber will remain in puncture. Using an
pressure. Then check to make sure injury is
awl, pack excess rubber flush with inside of tire.
sealed.
Fig. 16
Fig. 18
The next three steps apply only to the cold patch method.
8. Apply self-vulcanizing cement over buffed area
and allow it to dry for a minimum of five minutes.
This time factor is important.
9. Remove backing from patch base and place
patch over injury. Press down firmly, especially
at the edges, for good adhesion (and easy
removal of paper cover)(Fig. 19).
10. Remount tire. Inflate to the recommended
operating pressure. Then check to make sure
injury is sealed.
Fig. 17
4. With a wire brush (Fig. 17) or a power buffer,
thoroughly roughen an area about the injury
slightly larger than patch and within previously
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