Procedures for mounting and demounting wheel and tire assemblies

Procedures for mounting and demounting wheel and tire assemblies

Only present correct procedures and expected effects.The required tools are for reference. For example, if special tire mounting equipment is applied, the action and place of the parts are different, but the procedures are the same.

1.1 Demounting Tubeless Single Piece Wheel and Tire Assemblies

1.1.1 Completely deflate tire by removing valve core from valve(both tires of a dual assembly) before attempting any demounting operation.

1.1.2 Lay the assembly on the floor.

1.1.3 Drive a bead unseating tool between the tire bead and rim flange, being careful not to damage the tire bead area. After the bead has been completely released around the tire, turn the tire and rim over and repeat the bead unseating procedure.

1.1.4 With the narrow ledge on top, thoroughly lubricate the rim flange and tire bead area with a vegetable-based lubricant.

1.1.5 Pry the bead over the rim flange using two tire irons. Take small bites to avoid damaging the bead. Continue until the top bead is completely over the rim flange.

1.1.6 To completely remove the tire from the rim turn assembly over so the narrow ledge is down and lubricate the second tire bead and rim flange. Be sure the bead still on the rim is in the rim well and insert the tire irons under the opposite side of the bead. Work the rim slowly out of the tire by taking small bites alternately using both tire irons.

1.2  Mounting Tubeless Single Piece Wheel and Tire Assemblies

1.2.1 Lay the rim on the floor with the narrow ledge on the top.Thoroughly lubricate the tire bead area and rim flange with a vegetable-based lubricant.

1.2.2 Push the bottom bead over the rim flange as far as possible and down into the rim well. Use tire irons to work the first tire bead completely over the rim flange, taking small bites and being careful not to damage the bead.

1.2.3 Use tire irons to lever the top bead over the rim flange. Locking pliers may be used to resist tire slipping back off rim.

1.2.4Thoroughly lubricate the tire bead area and rim bead- seats on both sides of the tire

1.2.5 Place the tire in a safety cage.Inflate the tire to seat the beads.Check for correct concentric centering of tire on rim.Successful mounting depends on how well the shape of the tire has been maintained. If the beads are in or near their molded position, they can be seated by inflating the tire. Where the beads have been squeezed together, the use of an inflator ring will be required to provide a seal between the tire bead and rim.

1.3 Demounting 3- Piece Wheel and Tire Assemblies

1.3.1 Completely deflate tire by removing valve core from valve (both tires of a dual assembly) before attempting any demounting operation.

1.3.2 Drive the end of two tire iron tools between the tire and side flange about 120 mm apart.

1.3.3 Pry both tools down and out. Leave one tool in position and place the second about 120mm beyond. Repeat in successive steps until the tire bead is completely unseated.

1.3.4 Depress the side flange down along the rim base.Pry the lock ring loose, starting at the split then remove the lock ring.

1.3.5 Hold the side flange down with tire iron to remove the “O" ring from ring groove.

1.3.6 Remove the side flange.

1.3.7Turn tire and rim over and unseat second bead by inserting both tire iron tools between tire and fixed rim flange as in step 1.3.2 Repeat steps 1.3.2and 1.3.3 until the tire bead is completely broken loose from the rim on the fixed flange side. lift rim base out of tire.