Dismounting

CAUTIONS:
- Prior to performing any service procedure on the extended mobility tire used on this vehicle, read the safety warning located on the sidewall of the tire.

- When dismounting the extended mobility tire used on this vehicle, only a wheel clamp type tire changer can be used. This style of tire changer is manufactured by companies such as Coats and Hunter. Using any other style tire changer will cause damage to the wheel and be potentially dangerous for the operator to use on an extended mobility tire.

NOTE:
- The extended mobility tires used on this vehicle have sidewalls which are much stiffer then the side walls on conventional tires. For this reason, the tires are more difficult to dismount then a conventional tire. Following the steps in this dismounting procedure, no matter what manufactures tire changing equipment is used, will make dismounting the tire as easy as possible. Following the steps in this procedure will also greatly reduce the chance of damaging a wheel or tire when doing the dismounting procedure.

- The following procedure for dismounting the extended mobility tire must be followed to prevent damage to the wheel, tire and pressure transmitter which is mounted to the wheel. The steps of the procedure are not intended to be specific to any manufactures tire changing equipment.

1. Remove the tire/wheel from the vehicle.

CAUTION: When removing the stick on balancing weights from the wheel, do not use an abrasive cleaner or a cleaner which will damage the protective finish on the wheel.

2. Remove the clamp on and stick on balancing weights from the wheel.

NOTE: The cap used on this valve stem contains an O-ring seal to prevent contamination and moisture from entering the valve stem. Retain this valve stem cap for re-use, do not substitute another valve stem cap.

3. Remove the cap from the valve stem.

NOTE: The valve stem used on this vehicle is aluminum and the core is stainless steel. The original valve stem core must be reinstalled and not substituted for a valve stem core made of a different material. This is required to prevent corrosion in the valve stem caused by the different metals.





4. Using the appropriate tool, remove the core from the valve stem.
5. Let the tire fully deflate.

CAUTION: The pressure transmitter must be removed from the wheel and dropped into the tire prior to breaking the bead and dismounting the tire. Failure to do this will greatly increase the risk of damaging the pressure transducer when servicing the tire.





6. Remove nut mounting the valve stem of the pressure sensor/transmitter to the wheel. Drop the pressure transmitter down into the tire.

CAUTION: When breaking the top and bottom bead of the tire off the wheel, care must be used so the bead breaking mechanism on the tire changer does not damage the wheel. This includes the surface of the wheel flange on the inside of the wheel.

7. Using the tire changer manufacturers procedure, first break down the upper bead of the tire. Then break down the bottom bead of the tire.

CAUTION: The wheel and upper bead of the tire must be thoroughly coated with tire mounting lubricant compound before attempting to dismount the upper bead from the wheel. Failure to do this will cause damage to the bead of the tire and the wheel.

NOTE: When mounting the wheel on the tire changer, the wheel must be mounted so that no damage will be done to the wheel when dismounting the tire.

8. Mount the wheel on the tire changer per the tire changer manufacturers instructions.





9. Thoroughly coat entire upper bead of tire and all surfaces around the full edge of the wheel with tire mounting compound.

CAUTION:
- Protective sleeves are to be used on the tire irons to protect the wheel from damage when dismounting the tire

- When dismounting the upper bead of the tire from the wheel, the tire iron MUST be positioned on the bead block of the tire changer.

10. Dismount the upper bead of the tire from the wheel. When dismounting the upper bead from the wheel, position as much tire sidewall as possible, opposite of the bead block, off the flange of the wheel and down into the well of the wheel.





11. Pull upward on the tire. Reach into the tire and remove the pressure transmitter from inside the tire.





CAUTION:
- Protective sleeves are to be used on the tire irons to protect the wheel from damage when dismounting the tire

- When dismounting the bottom bead of the tire from the wheel, the tire iron must be positioned on the bead block of the tire changer.

12. Using the tire iron, position the bottom bead of the tire onto the bead block of the tire changer. When dismounting the bottom bead from the wheel, be sure that the bottom bead of the tire opposite of the bead block, is in the well of the wheel.
13. Remove the tire from the wheel.