Tire Dismounting and Mounting EMT/Aluminum Wheel

Notice: Use a tire changing machine in order to dismount tires. Do not use hand tools or tire irons alone in order to remove the tire from the wheel. Damage to the tire beads or the wheel rim could result.

Notice: Do not scratch or damage the clear coating on aluminum wheels with the tire changing equipment. Scratching the clear coating could cause the aluminum wheel to corrode and the clear coating to peel from the wheel.

1. Record the wheel position as it sits on the vehicle. The wheel with valve/sensor must be replaced on the vehicle in the same position as it was removed.
2. Remove the tire and wheel assembly from the vehicle. Refer to Tire and Wheel Removal and Installation .

Notice: When dismounting or mounting an Exteneded Mobility Tire (EMT) do not let the metal parts of the tire changer touch or make contact with with the wheel.

3. Read the EMT safety warning on the tire sidewall.

Important: Rim-clamp European-type tire changers are recommended.

4. Use the tire changer in order to remove the tire from the wheel.



5. Remove the valve core.
6. Deflate the tire completely.

Notice: Damage to either the tire bead or the wheel mounting holes can result from the use of improper wheel attachment or tire mounting procedures. It takes up to 70 seconds for all of the air to completely exhaust from a large tire. Failure to follow the proper procedures could cause the tire changer to put enough force on the tire to bend the wheel at the mounting surface. Such damage may result in vibration and/or shimmy, and under severe usage lead to wheel cracking.

7. Unscrew the valve/sensor nut and drop the sensor down into the tire.

Notice: When mounting the tires, use an approved tire mounting lubricant. DO NOT use silicon or corrosive base compounds to lubricate the tire bead and the wheel rim. A silicon base compound can cause the tire to slip on the rim. A corrosive type compound can cause tire or rim deterioration.

8. Apply GM P/N 12345884 or equivalent to the tire bead and the wheel rim.

Important: Rim-clamp European-type tire changers are recommended.

9. Use the tire changer in order to remove the tire from the wheel.
10. Remove the top bead of the tire from the wheel.
11. Pull up the tire, reach inside and remove the tire pressure monitor sensor.
12. Remove the bottom bead of the tire from the wheel.

1. Use a wire brush or coarse steel wool in order to remove any rubber, light rust or corrosion from the wheel bead seats.



2. Install the tire pressure monitor sensor.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

3. Install the valve/sensor nut.

Tighten
Tighten the valve/sensor nut to 12 N·m (106 lb in).

4. Apply GM P/N 12345884 or equivalent to the tire bead and the wheel rim.
5. Use the tire changer in order to Install the tire to the wheel.
6. Set the tire over the wheel and mount the bottom bead.
7. Mount the top bead.
8. Place the tire in a tire cage.
9. Inflate the tire with a clip-on air hose attachment to seat the beads, NEVER exceed 552 kPa (80 psi).
10. If the tire beads will not seat at 552 kPa (80 psi), deflate the tire, re-lubricate the bead area and try to seat the tire beads again.
11. Ensure that the locating rings are visible on both sides of the tire in order to verify that the tire bead is fully seated on the wheel.
12. Set the tire pressure to 207 kPa (30 psi).
13. Install the tire and wheel assembly to the vehicle. Refer to Tire and Wheel Removal and Installation .
14. Program the sensor. Refer to Tire Pressure Monitoring Sensor Programming in Tire Pressure Monitoring.

Tire Dismounting and Mounting EMT/Magnesium Wheel

Notice: Use a tire changing machine in order to dismount tires. Do not use hand tools or tire irons alone in order to remove the tire from the wheel. Damage to the tire beads or the wheel rim could result.

Notice: Do not scratch or damage the clear coating on aluminum wheels with the tire changing equipment. Scratching the clear coating could cause the aluminum wheel to corrode and the clear coating to peel from the wheel.

1. Record the wheel position as it sits on the vehicle. The wheel with valve/sensor must be replaced on the vehicle in the same position as it was removed.
2. Remove the tire and wheel assembly from the vehicle. Refer to Tire and Wheel Removal and Installation .

Notice: When dismounting or mounting an Exteneded Mobility Tire (EMT) do not let the metal parts of the tire changer touch or make contact with with the magnesium wheel.

3. Read the EMT safety warning on the tire sidewall.

Important: Rim-clamp European-type tire changers are recommended.

4. Use the tire changer in order to remove the tire from the wheel.



5. Remove the valve core.
6. Deflate the tire completely.

Notice: Damage to either the tire bead or the wheel mounting holes can result from the use of improper wheel attachment or tire mounting procedures. It takes up to 70 seconds for all of the air to completely exhaust from a large tire. Failure to follow the proper procedures could cause the tire changer to put enough force on the tire to bend the wheel at the mounting surface. Such damage may result in vibration and/or shimmy, and under severe usage lead to wheel cracking.

7. Unscrew the valve/sensor nut and drop the sensor down into the tire.

Notice: When mounting the tires, use an approved tire mounting lubricant. DO NOT use silicon or corrosive base compounds to lubricate the tire bead and the wheel rim. A silicon base compound can cause the tire to slip on the rim. A corrosive type compound can cause tire or rim deterioration.

8. Apply GM P/N 12345884 or equivalent to the tire bead and the wheel rim.

Notice: Use an European style rim clamp tire changer to mount or dismount the tires. Follow the tire changer manufacturer instructions and procedures. Make sure the clamping jaws, the mount/dismount head and the hand held bead lever are protected to avoid damaging the back side of the rim and the outboard rim flange. The tire pressure monitor sensor will always be located at the tire valve stem. Position the wheel on the tire changer so that the valve stem is at least 90 degrees away from the bead breaker. Make sure the tires bead and the tire changers hand held bead lever do not come in contact with the tire pressure monitor sensor while mounting or dismounting the tire from the wheel.

9. Remove the top bead of the tire from the wheel.
10. Pull up the tire, reach inside and remove the tire pressure monitor sensor.
11. Remove the bottom bead of the tire from the wheel.

1. Clean the rim bead seats.



2. Install the tire pressure monitor sensor.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

3. Install the valve/sensor nut.

Tighten
Tighten the valve/sensor nut to 12 N·m (106 lb in).

4. Apply GM P/N 12345884 or equivalent to the tire bead and the wheel rim.
5. Use the tire changer in order to Install the tire to the wheel.
6. Set the tire over the wheel and mount the bottom bead.
7. Mount the top bead.
8. Place the tire in a tire cage.
9. Inflate the tire with a clip-on air hose attachment to seat the beads, NEVER exceed 552 kPa (80 psi).
10. If the tire beads will not seat at 552 kPa (80 psi), deflate the tire, re-lubricate the bead area and try to seat the tire beads again.
11. Ensure that the locating rings are visible on both sides of the tire in order to verify that the tire bead is fully seated on the wheel.
12. Set the tire pressure to 207 kPa (30 psi).
13. Install the tire and wheel assembly to the vehicle. Refer to Tire and Wheel Removal and Installation .
14. Program the sensor. Refer to Tire Pressure Monitoring Sensor Programming in Tire Pressure Monitoring.