Tire Mounting
Tire Mounting
NOTE:
- The mounting machine described here is particularly suitable for the tire combinations used on the 911 Turbo (996).
- All parts in contact with the wheel and the tire are made of plastic.
- No large point load for wheel and tires.
Tools
Notes on Removing/Mounting tires
NOTE:
- When fitting tires, the direction of rotation and the inner and outer sides should be noted.
- Use only TIP TOP Universal, order No. 593 0601 (3.5 kg bucket) or Contifix as the mounting paste.
- Ensure that no damage (scoring, soiling) is caused to the assembly head of the fitting machine during fitting. Such damage may result in paint damage and pressure marks on the rim flange.
- Avoid slipping on to the rim flange. Use rim flange protection (assembly aid) -B-.
- Adhesive tape can be used to protect the rim flange in individual cases, in order to prevent any paint damage during fitting. The mounting lever can also be covered with adhesive tape in order to avoid damaging the area around the spokes during removal.
- The valve must always be replaced when changing a tire. Steel valves -1- are used for 18-inch Turbo II wheels and rubber valves -2- for 18-inch Turbo-Look II wheels.
- Check the wheel for damage.
Removal
1. Clamp wheel.
2. When pushing off the tire, ensure that the bead press-off tool is set to the exact inch graduation. If this is not the case, the rim flange may be damaged by the press-off rollers.
3. The wheel must be turned anti-clockwise when pressing the tire off the rim. Otherwise, excessive forces occur on the fastening bolts of the machine which can lead to bolt breakage. The tire beads can be pressed off at the same time or individually.
4. Before removing the tire, coat the tire beads with mounting paste to facilitate removal.
NOTE: The mounting lever must be kept at a safe distance from the rim. This prevents damage (scratches, pressure marks) to the rim spokes.
5. Put the assembly head on the rim flange. Position the assembly aid. The mounting lever is pushed into the deep bed underneath the first tire bead, and then guided over the assembly shoe and pushed down.
6. Lift the tire bead out of the rim bed by turning the wheel to the right.
7. Position the assembly aid for the second tire bead. Pull the tire upwards and push it into the rim bed underneath the second tire bead using the mounting lever. Make sure that the mounting lever is guided correctly (see Point 5). Turn the wheel to the right and remove the tire.
Fitting
NOTE:
- Do not use commercially available steel valves.
- The Porsche valves (part No. 993.361.073.00) are shorter; dimension -X-. Dimension -X- is 43 mm for the Porsche version.
1. Free the wheel from the abraded rubber particles and check for damage.
2. A new valve must always be fitted. Steel valves -1- are used for 18-inch Turbo II wheels and rubber valves -2- for 18-inch Turbo-Look II wheels.
3. Coat the wheel and tire with tire mounting paste - TIP TOP Universal, order No. 593 0601 - or Contifix.
4. Place the tire in the correct position on the wheel. Push in mounting arm and position on top of the rim flange.
5. Guide the tire bead through the assembly head. Fit the tire bead in the deep bed by turning the wheel to the right.
6. At the start of the mounting process of the second tire bead, the mounting arm should be positioned opposite to the valve. This prevents damage to the valve.
7. Press the second tire bead onto the wheel as flat as possible and guide through the assembly head.
8. Insert first holding-down device and position the second holding-down device offset by 90° to 120°. Fit tire bead in deep bed by turning to the right.
9. Fill tire with compressed air. At approx. 4.0 bar, the beads should pop over the hump. Coat the tire beads with mounting paste again if necessary so that they can pop over easily and gently.