JLG 450A II Series, Service And Maintenance Manual

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SECTION 3 - CHASSIS & TURNTABLE
3121290 – JLG Lift – 3-1
SECTION 3. CHASSIS & TURNTABLE
3.1 TIRES AND WHEELS
Tire Inflation
Pneumatic tire air pressure must be equal to air pressure sten-
ciled on side of JLG product or rim decal for safe and proper
machine operation.
Tire Damage
PNEUMATIC TIRES
JLG Industries, Inc. recommends when any cut, rip, or tear is
discovered that exposes sidewall or tread area cords in the tire,
measures must be taken to remove the JLG product from ser-
vice immediately. Arrangements must be made for replace-
ment of the tire or tire assembly.
POLYURETHANE FOAM FILLED TIRES
JLG Industries, Inc. recommends when any of the following are
discovered, measures must be taken to remove the JLG prod-
uct from service immediately and arrangements made for
replacement of tire or tire assembly:
• Smooth, even cut through cord plies which exceeds
3" (7.5 cm) in total length.
• Tears or rips (ragged edges) in cord plies which
exceeds 1" (2.5 cm) in any direction.
• Punctures which exceed 1" in diameter.
• Damage to bead area cords.
NOTE:
If tire is damaged but within above criteria, tire must be
inspected daily to ensure damage does not exceed allow-
able criteria.
Tire Replacement
JLG recommends replacement tire be the same size, ply, and
brand as originally installed on machine. Refer to the JLG Parts
Manual for part number of approved tires for a particular
machine model. If not using a JLG approved replacement tire,
we recommend replacement tires have the following charac-
teristics:
• Equal or greater ply/load rating and size of original
• Tire tread contact width equal or greater than original
• Wheel diameter, width, and offset dimensions equal to
original
• Approved for the application by the tire manufacturer
(including inflation pressure and maximum tire load)
Unless specifically approved by JLG Industries Inc. do not
replace a foam filled or ballast filled tire assembly with a pneu-
matic tire. When selecting and installing a replacement tire,
ensure all tires are inflated to pressure recommended by JLG.
Due to size variations between tire brands, both tires on the
same axle should be identical.
Wheel Replacement
Rims installed on each product model are designed for stabil-
ity requirements which consist of track width, tire pressure,
and load capacity. Size changes such as rim width, center
piece location, larger or smaller diameter, etc., without written
factory recommendations, may result in unsafe stability condi-
tions.