Tread punctures or penetrations left unrepaired may cause irreversible tire damage. An improper repair can damage the tire and will void the warranty.
Combination patch/stem repair. Steel cord damage must be repaired immediately to prevent rusting of the steel. Using plugs or patches alone on any type of tire is not a safe repair.
Do not perform this part of the repair on a spreader as this deforms the area to be repaired.
1. Remove all foreign matter from the hole. Be careful not to enlarge the hole.
2. Select the proper size reamer. The reamer selection must completely cover the injured area.
3. Select the proper size patch and plug to correspond to the reamer. Center the patch over the puncture and mark 1" beyond the edge of the patch with a crayon.
4. Clean the punctured area thoroughly with a pre-buff chemical cleaner. (do not use gasoline).
5. With the tire in a relaxed position and following the tool manufacturer's recommendation, use a proper hand reamer, carbide cutter, or drill bit to clean the injury.
6. Buff thoroughly to a flat, smooth velvet surface, per RMA. "Be careful not to gouge liner or expose casing liner. Remove buffing dust with a vacuum cleaner. Note: chemical cleaning is not a substitute for mechanical buffing."
7. Apply a cement recommended by the patch manufacturer according to the label directions. Cement must be allowed to dry thoroughly.
8. Lubricate the hole and taper of plug with cement. Insert the plug into the hole, pulling it firmly through so the patch seats to the buffed innerliner. Be sure the bead markings are in the correct position.
9. Stitch from the center out being careful not to trap any air.
10. Cut off the stem 1/16" above the outer surface.
WARNING: Failure to follow the above recommendations could result in
sudden tire failure, property damage, personal injury or death.