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Proper Mounting
& Dismounting
General Information:
Tire changing can be dangerous & should only be performed
by trained personnel.
Never strike the tire or rim with a hammer!!
Use proper tire mounting tools & equipment.
Always work on a clean surface.
To facilitate mounting and dismounting, lubricate rim &
tire beads with proper lubricant.
Never use petroleum-based or silicone lubricants.
Excessive lubricant can cause rim slip.
Inflation &
Proper Bead Seating
NEVER INFLATE AN AGRICULTURAL
TIRE OVER 35 PSI TO SEAT BEADS!! Consult RMA mounting guidelines
and safety precautions.
Causes Of Mounting
Damages
During removal, use of sharp tools or hammer to unseat
beads.
During mounting, cutting or tearing of bead against rim
flange, most often due to inadequate lubrication (during
mounting of first bead).
Bead damage can occur during mounting if rim flange is
sharp or in poor condition.
During mounting: cut caused by sharp or off-center roller
(typical OE mounting damage).
During mounting: cut caused by sharp or damaged rim flange,
often when bead is forced with a hammer (during mounting
of second bead).
Causes Of Bead
Breakage
Tube pinched between bead &
rim (bead hangs)
Difficulty in seating beads,
or incorrect mounting operation
Tire not centered on rim
Excessive pressure used to
seat beads
Rim circumference too large
Incorrect rim profile (particularly
the angles)
Inadequate or incorrect lubrication
(both tire and rim must be lubricated)
Broken
Bead
Incorrectly
Seated Beads
Bead Distortion
& Damage from Mis-mounting
can cause tire/wheel assembly to
be out-of-round, causing a ride complaint & irregular
wear.
can lead to bead and lower sidewall
failure (bead @ wrong angle & unstable, sidewall flex
zone incorrect).
