Mounting and Safety

Instructions

1

PART ONE: SAFETY – MOUNTING THE TIRE

IMPORTANT: BE SURE TO READ THIS SAFETY

INFORMATION.

Make sure that everyone who services tires or vehicles in your operation has read and understands these warnings. SERIOUS INJURY OR DEATH CAN RESULT

FROM FAILURE TO FOLLOW SAFETY WARNINGS.

No matter how well any tire is constructed, punctures, impact damage, improper inflation, improper maintenance, or service factors may cause tire failure creating a risk of property damage and serious or fatal injury. Truck operators should examine their tires frequently for snags, bulges, excessive treadwear, separations, or cuts. If such conditions appear, demount the tire and see a truck tire dealer immediately.

The US Department of Labor Occupational Safety and

Health Administration (OSHA) provides regulations and publications for safe operating procedures in the servicing of wheels. Please refer to OSHA Standard 29 CFR

Part 1910.177 (Servicing Multi-Piece and Single Piece

Rim Wheels). This can be found in the Section Nine,

Appendix (Pages 136-138) of the MICHELIN

®

Truck Tire

Service Manual (MWL40732).

Specifically, note that the employer shall provide a program to train all employees who service wheels in the hazards involved in servicing those wheels and the safety procedures to be followed. The employer shall ensure that no employee services any wheel unless the employee has been trained and instructed in correct procedures of servicing the type of wheel being serviced, and shall establish safe operating procedures for such service.

Michelin provides the following information to further assist employers to comply with that initiative.

2

Tire and wheel servicing can be dangerous and must be done only by trained personnel using proper tools and procedures. Failure to read and comply with all procedures may result in serious injury or death to you or others.

Re-inflation of any type of tire and wheel assembly that has been operated in a run-flat or underinflated condition

(80% or less of recommended operating pressure) can result in serious injury or death. The tire may be damaged on the inside and can explode during inflation. The wheel parts may be worn, damaged, or dislodged and can explosively separate. Refer to RMA Tire Information Service Bulletin on potential “zipper ruptures” – TISB Volume 33, Number 3

(December 2007).

RMA (Rubber Manufacturers Association) recommends that any tire suspected of having been run underinflated and/or overloaded must remain in the safety cage, be inflated to 20 psi OVER maximum pressure marked on the sidewall, and then be inspected. Do not exceed the maximum inflation pressure for the wheel.

Be sure to reduce pressure to regular operating pressure before placing back in service if the tire has been deemed serviceable.

Use of starting fluid, ether, gasoline, or any other flammable material to lubricate, seal, or seat the beads of a tubeless tire can cause the tire to explode or can cause the explosive separation of the tire and wheel assembly resulting in serious injury or death. The use of any flammable material during tire servicing is absolutely prohibited.

Any inflated tire mounted on a wheel contains explosive energy. The use of damaged, mismatched, or improperly assembled tire and wheel parts can cause the assembly to burst apart with explosive force. If you are struck by an exploding tire, wheel part, or the blast, you can be seriously injured or killed.

Re-assembly and inflation of mismatched parts can result in serious injury or death. Just because parts fit together does not mean that they belong together. Check for proper matching of all wheel parts before putting any parts together.

Mismatching tire and wheel components is dangerous. A mismatched tire and wheel assembly may explode and can result in serious injury or death. This warning applies to any combination of mismatched components and wheel combinations. Never assemble a tire and wheel unless you have positively identified and correctly matched the parts.

ZIPPER RUPTURES

A fatigue-related damage, with or without a rupture, occurs in the sidewall flex area of steel radial light and medium truck tires when it is subjected to excessive flexing or heat. This zipper rupture is a spontaneous burst of compressed gas, and the resulting rupture can range in length anywhere from 12 inches to 3 feet circumferentially around the tire. This is caused by the damage and weakening of the radial steel cables as a result of run-flat, underinflation, or overload. Eventually, the pressure becomes too great for the weakened cables to hold, and the area ruptures with tremendous force.

The RMA (Rubber Manufacturers Association) states that permanent tire damage due to underinflation and/or overloading cannot always be detected. Any tire known or suspected of having been run at less than 80% of normal recommended operating pressure and/or overloaded, could possibly have permanent structural damage (steel cord fatigue).

The RMA has issued a revised Tire Industry Service

Bulletin for procedures to address zipper ruptures in certain commercial vehicle tires. The purpose of the bulletin is to describe the inspection procedures for identifying potential sidewall circumferential ruptures

(also known as “zipper ruptures”) on truck/bus tires and light-truck tires of steel cord radial construction. Zipper ruptures can be extremely hazardous to tire repair technicians. Careful adherence to proper repair procedures is crucial.

For more information contact RMA at [email protected] or visit www.rma.org.

TIRE INSPECTION

Tire inspection should always include a thorough inspection of both sidewalls and inner liner, as this may reveal any potential damage condition that would cause the tire to become scrap. Examine the inner liner for creases, wrinkling, discoloration, or insufficient repairs, and examine the exterior for signs of bumps or undulations, as well as broken cords, any of which could be potential out of service causes. Proper OSHA regulations must be followed when putting any tire and wheel back in service. After the tire has been inflated to

20 psi in a safety cage, it should undergo another sidewall inspection for distortions, undulations, or popping noises indicating a breaking of the steel cords.

If this is the case, immediately fully deflate and scrap the tire. If no damage is detected, continue to inflate to the maximum pressure marked on the sidewall. Do not exceed the maximum inflation pressure for the wheel.

Any tire suspected of having been run underinflated and/or overloaded must remain in the safety cage, be inflated to 20 psi OVER maximum pressure marked on the sidewall, and then be inspected.

PART 2: MOUNTING AND DEMOUNTING TUBELESS TIRES

In order for a tire to perform properly, it must be mounted on the correct size wheel. The following are general instructions for mounting and demounting

MICHELIN ® tubeless tires, including the MICHELIN ®

X One ® tires.

Specifics for 19.5" wheels are detailed in the Mounting

Tubeless Tire section (Page 5). For additional detailed instructions on mounting and demounting truck tires on particular types of wheels, refer to the instructions of the wheel manufacturer or the RMA wall charts.

TUBELESS TIRE MOUNTING/DEMOUNTING

USING A MOUNTING MACHINE

There are several tire changing machines available for the mount and demount procedure. Consult the manufacturer’s user manual for the machine you are using as each operates differently. Full lubrication of the wheel and beads is still required. Inflation process requirements remain the same.

DIRECTIONAL TIRES

Truck tires featuring directional tread designs have arrows molded into the shoulder/edge of the outer ribs to indicate the intended direction of tire rotation. It is important, to maximize tire performance, that directional tires be mounted correctly on wheels to ensure that the directionality is respected when mounted on the vehicle.

For example, when mounting directional drive tires on a set of 8 wheels, use the drop centers as a reference. Four tires should be mounted with the arrows pointing to the left of the technician and four tires with the arrows pointing to the right. This ensures that when the assemblies are fitted onto the vehicle that all tires can be pointed in the desired direction of rotation.

Directional steer tires should be mounted in a similar fashion, one each direction, to ensure both are pointed forward.

Once directional tires are worn greater than 50%, there is generally no negative effect of running them in a direction opposite to the indicated direction of rotation.

Operating directional tires from new to 50% worn in the opposite direction of that indicated on the tire will result in the premature onset of irregular wear, excessive noise levels, and significantly reduced tread life.

3

4

1. SELECTION OF PROPER COMPONENTS

AND MATERIALS

a. All tires must be mounted on the proper wheel as indicated in the specification tables. For complete tire specifications, refer to application specific data books. b. Make certain that wheel is proper for the tire

dimension.

c. Always install new valve cores and metal valve caps

containing plastic or rubber seals.

d. Always replace the rubber valve stem on a 16" through

19.5" wheel.

e. Always use a safety device such as an inflation cage or other restraining device that will constrain all wheel components during the sudden release of the contained gas of a single piece wheel. Refer to current OSHA standards for compliance. Do not bolt safety cages

to the floor nor add any other restraints or accessories. Cage should be placed 3 feet from

anything, including the wall. Never stand over a tire or in front of a tire when inflating. Always use a clip-on valve chuck with an in-line valve fitted with a pressure gauge or use a presettable regulator. Additionally,

ensure there is a sufficient length of hose between the clip-on chuck and the in-line valve

(if one is used) to allow the service technician to stand outside the trajectory zone when inflating.

Trajectory zone means any potential path or route that a wheel component may travel during an explosive separation or the sudden release of the pressurized gas, or an area at which the blast from a single piece wheel may be released. The trajectory may deviate from paths that are perpendicular to the assembled position of the wheel at the time of separation or explosion. See Rubber

Manufacturers Association Tire Information Service

Bulletin Volume 33, Number 3 (December 2007) for more information.

2. TIRE AND WHEEL LUBRICATION

It is essential that an approved tire mounting lubricant be used. Preferred materials for use as bead lubricants are vegetable based and mixed with proper water ratios per manufacturer’s instructions. Never use antifreeze, silicones, or petroleum-base lubricants as this will damage the rubber.

Lubricants not mixed to the manufacturer’s specifications may have a harmful effect on the tire and wheel.

The lubricant serves the following three purposes:

• Helps minimize the possibility of damage to the tire beads from the mounting tools.

• Helps ease the insertion of the tire onto the wheel by lubricating all contacting surfaces.

• Assists proper bead seating (tire and wheel centering) and helps to prevent eccentric mountings.

The MICHELIN product, Tiger Grease 80, MSPN 25817, is specifically formulated for commercial truck tire mounting. It can be obtained through any authorized

MICHELIN Truck Tire dealer or by contacting MICHELIN

Consumer Care (1-888-622-2306).

For tube-type tires apply a clean lubricant to all portions of the tire bead area and the exposed portion of the flap using sufficient but sparing quantities of lubricant.

Also, lubricate the entire rim surface of the wheel.

Avoid using excessive amounts of lubricant, which can become trapped between the tire and tube and can result in tube damage and rapid air loss.

CAUTION: It is important that tire lubricant be clean and free of dirt, sand, metal shavings, or other hard particles. The following practice is recommended: a. Use a fresh supply of tire lubricant each day, drawing from a clean supply source and placing the lubricant in a clean portable container.

b. Provide a cover for the portable container and/or other means to prevent contamination of the lubricant when not in use. For lubricants in solution, we suggest the following method that has proven to be successful in helping to minimize contamination and prevent excess lubricant from entering the tire casing: provide a special cover for the portable container that has a funnel-like device attached. The small opening of the funnel should be sized so that when a swab is inserted through the opening into the reserve of lubricant and then withdrawn, the swab is compressed, removing excess lubricant. This allows the cover to be left in place providing added protection. A mesh false bottom in the container is a further protection against contaminants.

The tire should be mounted and inflated promptly before lubricant dries.

3. PREPARATION OF WHEELS AND TIRES

a. Always wear safety goggles or face shields when buffing or grinding wheels.

b. Inspect wheel assemblies for cracks, distortion, and deformation of flanges. Using a file and/or emery cloth, smooth all burrs, welds, dents, etc. that are present on the tire side of the wheel. Inspect the condition of bolt holes on the wheels. Rim flange gauges and ball tapes are available for measuring wear and circumference of aluminum wheels.

c. Remove rust with a wire brush and apply a rust inhibiting paint on steel wheels. The maximum paint thickness is 0.0035" on the disc face of the wheel.

d. Remove any accumulation of rubber or grease that might be stuck to the tire, being careful not to damage it. Wipe the beads down with a dry rag.

MOUNTING TUBELESS

1. Inspect the condition of the bolt holes on the wheels, and look for signs of fatigue. Check flanges for excessive wear by using the wheel manufacturer’s flange wear indicator.

2. Replace valve core, and inspect valve stem for damage and wear. Michelin recommends always replacing the valve stem and using a new valve stem grommet. Ensure valve stem is installed using the proper torque value.

80-125 in/lbs (7-11 ft/lbs) for standard aluminum

wheels and 35-55 in/lbs (3-5 ft/lbs) for standard tubeless steel wheels. Ensure the valve core is installed using the proper torque value of 1.5 – 4 in/lbs.

To prevent galvanic corrosion on aluminum wheels, lubricate the threads and O-ring of the valve stem with a non-waterbased lubricant before installation.

3. Apply the tire and wheel lubricant to the rim surface of the wheel and bead area of the tire. When applying lubricant to the wheel, lubricate the entire rim surface from flange to flange. The tire should be mounted and inflated before the lubricant dries.

4. With short ledge up, lay the tire over the wheel opposite the valve side and work it on with proper tubeless tire tools, making full use of the drop center well. Drop center wheels are typically designed with an off-set drop center to accommodate wheel width and brake clearance. This creates a “short side” and a “long side” on the wheel.

(Some drop center wheels are designed with a symmetric wheel profile facilitating tire mounting from either side.)

It is imperative that the tire always be mounted and dismounted only from the short side. Failure to do this will likely result in damaged tire beads that could eventually cause rapid gas loss due to casing rupture.

This is particularly important on 19.5 inch RW (reduced well) aluminum wheels which, contrary to the norm, have their drop center located close to the disc side. Do not use a 19.5 x 7.50 wheel for the 305/70R19.5 tire size.

All 19.5 inch tubeless wheels should be mounted from the short side. Care should be taken to ensure that any internal monitoring system molded in the tire or on the wheel is not damaged or dislodged during this service.

5.

Do not use any kind of hammer.

Severe inner liner damage may occur resulting in sidewall separation and tire destruction. Use only proper mounting levers;

DO NOT USE A DUCK BILL HAMMER.

6. The MICHELIN ® X One ® tire is designed to replace dual tires on the drive and trailer positions of tandem over the road vehicles, and the tires must be mounted on

22.5 x 14.00" size wheels. Position the tire and wheel assembly so the valve stem is facing outward, away from the vehicle.

INFLATION OF TUBELESS TIRES

1. Lay tire/wheel assembly horizontally and inflate to no more than 5 psi to position the beads on the flanges.

OSHA dictates no more than 5 psi outside the cage to seat the beads.

2. To complete the seating of the beads, place the assembly in an OSHA (Occupational Safety and Health

Administration) compliant inflation restraining device

(i.e. safety cage) and inflate to 20 psi. Check the assembly carefully for any signs of distortion or irregularities from run-flat. If run-flat is detected, scrap the tire.

3. If no damage is detected, continue to inflate to the maximum pressure marked on the sidewall. RMA

(Rubber Manufacturers Association) recommends that if any tire suspected of having been underinflated and/or

Re-inflation of any type of tire and wheel assembly that has been operated in a run-flat or underinflated condition (less than 80% of normal recommended operating pressure) can result in serious injury or death. The tire may be damaged on the inside and can explode during inflation. The wheel parts may be worn, damaged or dislodged and can explosively separate.

overloaded must remain in the safety cage at 20 psi over the maximum pressure marked on the sidewall. Do not exceed the maximum inflation pressure for the wheel.

RMA requires that all steer sidewall tires are inflated without a valve core.

4. Ensure that the guide rib (GG Ring/mold line) is positioned concentrically to the wheel flange with no greater than 2⁄ 32" of difference found circumferentially.

Check for this variation by measuring at four sidewall locations (12, 3, 6, 9 o’clock). If bead(s) did not seat, deflate tire, re-lubricate the bead seats and re-inflate.

Note: As a general guide in vibration analysis, the

30/60/90 rule may apply:

.030-.060 (1⁄ 32 to 2 ⁄ 32 inch) = No action is required.

Limited possibility for vibration exists, and this range maximizes the ability to balance properly.

.061-.090 (2 ⁄ 32 to 3⁄ 32 inch) = Corrective action would be to perform the 3 R’s, after deflating the tire.

– Rotate the tire on the wheel

– Re-lubricate the tire and wheel (ensure the wheel is very clean)

– Re-inflate ensuring your initial inflation is with the tire lying horizontal (3-5 psi max)

>.090 (>3⁄ 32 inch) = Perform 3 R’s if mismount is indicated; however, when the reading is this high, it usually requires checking runout on these component parts: wheels/hubs/drums/wheel bearings.

5. After beads are properly seated, place the tire in safety cage and inflate assembly to maximum pressure rating shown on the sidewall, then reduce to operating pressure. Check valve core for leakage, then install suitable valve cap. Consider the use of inflate-thru or double seal valve caps for easier pressure maintenance.

DEMOUNTING OF TUBELESS TIRES

1. If still fitted on the vehicle, completely deflate the tire by removing the valve core. In the case of a dual assembly, completely deflate both tires before removing them from the vehicle (OSHA requirement). Run a wire or a pipe cleaner through the valve stem to ensure complete deflation.

2. With the tire assembly lying flat (after deflating the tire), break the bead seat of both beads with a bead breaking tool. Do not use hammers of any type to seat the bead.

Striking a wheel assembly with a hammer of any type

5

can damage the tire or wheel and endanger the installer.

Use a steel duck bill hammer only as a wedge. Do not strike the head of a hammer with another hard faced hammer – use a rubber mallet.

3. Apply the vegetable-based lubricant to all surfaces of the bead area of the tire.

4. Beginning at the valve, remove the tire from the wheel.

Starting at the valve will minimize chances of damaging the valve assembly. Make certain that the rim flange with the tapered ledge that is closest to the drop center is facing up. Insert the curved ends of the tire irons between the tire and rim flange. Step forward into the drop center and drop the bars down, lifting the tire bead over the rim flange. Hold one tire iron in position with your foot. Pull the second tire iron out and reposition it about 90 degrees from the first iron. Pull the second tire iron towards the center of the wheel. Continue to work tools around wheel until first bead is off the wheel.

5. Lift the assembly, place and rotate the tire iron to lock on the back rim flange, allow the tire to drop, and with a rocking motion remove the tire from the wheel.

6

PART 3: MOUNTING AND DEMOUNTING TUBE-TYPE TIRES

A tire cannot perform properly unless it is mounted properly on the correct size wheel. The following are general instructions for demounting and mounting

MICHELIN ® tube-type tires. For detailed instructions on mounting and demounting truck tires on particular types of wheels, refer to the instructions of the wheel manufacturer or the RMA (Rubber Manufacturers

Association) wall charts.

Do not re-inflate any tires that have been run underinflated or flat without careful inspection for damage. If run-flat damage is detected, scrap the tire.

A tire is considered run-flat if it is found to be less than

80% of normal recommended operating pressure. This can result in serious injury or death. The tire may be damaged on the inside and can explode during inflation. The wheel parts may be worn, damaged or dislodged and can explosively separate.

e. Always install new valve cores and metal valve caps

containing plastic or rubber seals. For tires requiring

O-rings, be sure to properly install a new silicone

O-ring at every tire change.

f. Always use a safety device such as an inflation cage or other restraining device that will constrain all wheel components during an explosive separation of a multipiece wheel, or during the sudden release of the contained gas of a single piece wheel that is in compliance with OSHA (Occupational Safety and Health

Administration) standards. Do not bolt restraining device to the floor. Never stand over a tire or in front of a tire when inflating. Always use a clip-on valve chuck with an in-line valve with a pressure gauge or a presettable regulator. Additionally, ensure there is a sufficient length of hose between the clip-on chuck and the in-line valve

(if one is used) to allow the service technician to stand outside the trajectory path when inflating. Trajectory zone means any potential path or route that a wheel component may travel during an explosive separation, or the sudden release of the pressurized gas, or an area at which the blast from a single piece wheel may be released. The trajectory may deviate from paths that are perpendicular to the assembled position of the wheel at the time of separation or explosion.

NEVER WELD OR APPLY HEAT TO A WHEEL ON

WHICH A TIRE IS MOUNTED.

1. SELECTION OF PROPER COMPONENTS

AND MATERIALS

a. All tires must be mounted with the proper MICHELIN

®

tube and flap (if required) and wheel as indicated in the specification tables on Page 93 of the MICHELIN

Truck Tire Service Manual (MWL40732).

For complete tire specifications, refer to application specific data books. b. Make certain that wheel components are properly

matched and of the correct dimensions for the tire.

c. Always fit a new MICHELIN

® tube in a new mounting.

Since a tube will exhibit growth in size through normal use, an old tube used in a new mounting increases the possibility of tube creasing and chafing, possibly resulting in failure. d. Always install a new flap in a new mounting. A flap, through extended use, becomes hard and brittle. After a limited time, it will develop a set to match the tire and wheel in which it is fitted. Therefore, it will not exactly match a new tire and wheel combination.

2. TIRE AND WHEEL LUBRICATION

It is essential that an approved tire mounting lubricant be used. Preferred materials for use as bead lubricants are vegetable based and mixed with proper water ratios per manufacturer’s instructions. Never use antifreeze, silicones, or petroleum-base lubricants as this will damage the rubber. Lubricants not mixed to the manufacturer’s specifications may have a harmful effect on the tire and wheel.

The lubricant serves the following three purposes:

• Helps minimize the possibility of damage to the tire beads from the mounting tools.

• Helps ease the insertion of the tire onto the wheel by lubricating all contacting surfaces.

• Assists proper bead seating (tire and wheel centering) and helps to prevent eccentric mountings.

The MICHELIN ® product, Tiger Grease 80, MSPN 25817, is specifically formulated for commercial truck tire mounting. It can be obtained through any authorized

MICHELIN Truck Tire dealer or by contacting MICHELIN

Consumer Care (1-888-622-2306).

Apply a clean lubricant to all portions of the tire bead area and the exposed portion of the flap using sufficient but sparing quantities of lubricant. Also, lubricate the

entire rim surface. Avoid using excessive amounts of lubricant, which can become trapped between the tire and tube and can result in tube damage and rapid gas loss.

CAUTION: It is important that tire lubricant be clean and free of dirt, sand, metal shavings, or other hard particles. The following practice is recommended: a. Use a fresh supply of tire lubricant each day, drawing from a clean supply source and placing the lubricant in a clean portable container.

b. Provide a cover for the portable container and/or other means to prevent contamination of the lubricant when not in use. For lubricants in solution, we suggest the following method, which has proven to be successful in helping to minimize contamination and prevent excess lubricant from entering the tire casing: provide a special cover for the portable container that has a funnel-like device attached. The small opening of the funnel should be sized so that when a swab is inserted through the opening into the reserve of lubricant and then withdrawn, the swab is compressed, removing excess lubricant. This allows the cover to be left in place providing added protection. A mesh false bottom in the container is a further protection against contaminants.

The tire should be mounted and inflated promptly before lubricant dries.

3. PREPARATION OF WHEELS AND TIRES

a. Always wear safety goggles or face shields when buffing or grinding wheels.

b. Inspect wheel assemblies for cracks, distortion, and deformation of flanges. Using a file and/or emery cloth, smooth all burrs, welds, dents, etc. that are present on the tire side of the wheel. Inspect the condition of bolt holes on the wheels. Rim flange gauges and ball tapes are available for measuring wear and circumference of aluminum wheels.

c. Remove rust with a wire brush and apply a rust inhibiting paint on steel wheels. The maximum paint thickness is .0035" (3.5 mils) on the disc face of the wheel.

d. Remove any accumulation of rubber or grease stuck to the tire, being careful not to damage it. Wipe the beads down with a dry rag.

DEMOUNTING TUBE-TYPE TIRE

1. Before loosening any nuts securing the wheel assembly to the vehicle, remove the valve core and deflate completely. If working on a dual assembly, completely deflate both tires. Run a wire or pipe cleaner through the valve stem to ensure complete deflation. This is to prevent a possible accident.

2. Remove the tire and wheel assembly from the vehicle and place on the floor with the side ring up.

3. Run a wire or pipe cleaner through the valve stem to clear the valve stem.

4. Apply lubricant to all surfaces of the bead area of the tire. Use the duck bill hammer, with the rubber mallet as a wedge, or a slide hammer.

5. For two-piece wheels, remove the side ring by pushing the tire bead down. Insert the tapered end of the rim tool into the notch and pry the side ring out of the gutter. Pry progressively around the tire until the side ring is free of the gutter.

6. For three-piece wheels, remove the lock ring by pushing the side rings and the tire bead down. Insert the tapered end of the rim tool into the notch near the split in the lock ring, push the tool downward, and pry the lock ring outward to remove the gutter from the base. Use the hooked end of the rim tool progressively around the tire to complete the removal, then lift off the side ring.

7. Turn the assembly over.

8. Unseat the remaining tire bead from the rim, and lift the rim from the tire.

Any inflated tire mounted on a wheel contains explosive energy. The use of damaged, mismatched or improperly assembled tire and wheel parts can cause the assembly to burst apart with explosive force. If you are struck by an exploding tire, wheel part or the blast, you can be seriously injured or killed. Do not attempt to dismount the tire while the assembly is still installed on the vehicle. Use proper tools to demount or mount wheel parts. Never use a steel hammer to seat wheel parts – use only rubber, plastic, or brass-tipped mallets.

Striking a wheel assembly with a hammer of any type can damage the tire or wheel and endanger the installer. Use a steel duck bill hammer only as a wedge.

Do not strike the head of a hammer with another hard-faced hammer – use a rubber mallet.

MOUNTING TUBE-TYPE TIRE

1. Insert the proper size MICHELIN

® tube into the tire and partially inflate (3 psi) to round out the tube (with larger sizes it may be necessary to use bead spreaders – see Page 8 for mounting instructions).

2. Insert the valve through the flap valve hole. (Make sure the reinforced patch that is directly over the flap valve hole is facing outwards.) Then insert the remainder of the flap into the tire.

3. Check the flap wings to ensure against folding. This is

7

8 easily accomplished by placing your hand into one tire side, then the other, and then running your hand along the entire flap wing.

4. Inflate the tube until the flap is secured against the tire wall and the beads start to spread apart, making sure

not to exceed 3 psi.

5. Apply a proper tire lubricant to both beads, exposed flap, and fully to the rim. Make sure that excess lubricant does not run down into the tire.

6. Lay the wheel flat on the floor with the gutter side up.

Place tire, tube, and flap on the wheel, taking care to center the valve in the slot.

7. For two-piece wheels, place the side ring on the rim base so that the ring split is opposite the valve stem by placing the leading end (end without the notch) of the ring into the groove in the rim, and progressively walk the side ring into place. Ensure the ring is fully seated in the gutter.

8. For three-piece wheels, place the side ring on the rim base and stand on the ring to position it below the gutter rim base. Snap the leading end (end without the notch) of the lock ring into the gutter of the rim base, and progressively walk the lock ring into place. Ensure the ring is fully seated in the gutter.

Re-assembly and inflation of mismatched parts can result in serious injury or death. Just because parts fit together does not mean that they belong together.

Check for proper matching of all wheel parts before putting any parts together. Inspect the tire and the wheel for any damage that would require them to be placed out of service.

Mismatching tire and wheel components is dangerous.

A mismatched tire and wheel assembly may explode and can result in serious injury or death. This warning applies to any combination of mismatched components and wheel combinations. Never assemble a tire and wheel unless you have positively identified and correctly matched the parts.

MOUNTING OF TUBE-TYPE TIRES USING

MANUAL SPREADERS

1. Follow Steps 1 through 3 of the “Mounting of Tube-Type

Tires.” However, before inserting the flap into the tire, position two bead spreaders in the following manner: a. Place the first at a 90° angle to the valve. (Flap is positioned between the spreader and the tube.) b. Place the second directly opposite the first.

c. Spread the beads and insert the flap.

d. Close the beads, remove spreaders.

2. Follow Steps 4 through 8 of the “Mounting of

Tube-Type Tires.”

MOUNTING OF TUBE-TYPE TIRES USING

AUTOMATIC SPREADERS

1. Spread the tire beads.

2. Inflate the tube to approximately 3 psi.

3. Insert the tube into the tire.

4. Insert the valve through the flap valve hole.

(As mentioned, the flap reinforced valve area must face outwards.) Insert the remainder of the flap into the tire.

5. Close the beads.

6. Apply a proper tire lubricant to the inside and outside surfaces of both beads and to that portion of the flap that appears between the beads. Make sure that excess

lubricant does not run down into the tire.

7. Follow Steps 4 through 8 of the “Mounting of Tube-Type

Tires.”

INFLATION OF TUBE-TYPE TIRES

1. An inflation line with an extension (30" minimum), in-line gauge, and a clip-on valve chuck should be used for inflation. Remove valve core and lay the assembly flat on the ground. Using an approved restraining device, inflate partially to seat beads to no more than

3 psi. While the tire is still in the restraining device, make sure all wheel components are centered and locked properly. If not, the tire must be deflated, broken down, relubricated and reinflated. Do not attempt to seat the lock ring by means of a hammer.

2. Deflate the tire by removing the inflation line. This is to allow the tube to relax, thus, eliminating any wrinkles or uneven stretching that may have occurred during primary inflation.

3. With the valve core still removed, place the dual and

wheel assembly into an approved safety cage or other approved restraining device meeting OSHA

(Occupational Safety and Health Administration)

standards, and reinflate the tire to the pressure shown on the sidewall in order to ensure proper bead seating.

Then adjust the tire to the proper operating pressure.

Never stand over a tire or in front of a tire when inflating. Always use a clip-on valve chuck with an in-line valve with a pressure gauge or a presettable regulator and a sufficient length of hose between the clip-on chuck and in-line valve (if one is used) to allow the employee to stand outside the trajectory path when inflating. RMA (Rubber Manufacturers Association) requires that all steel sidewall radial tires are inflated without a valve core.

4. Reinspect the assembly for proper positioning and seating of all components.

5. Check for leaks, and install a suitable valve cap.

Do not re-inflate any tires that have been run under-inflated or flat without careful inspection for damage. If run-flat damage is detected, scrap the tire. A tire is considered run-flat if it is found to be less than 80% of normal recommended operating pressure.