Chassis & Turntable; Tires & Wheels; Tire Inflation; Tire Damage - JLG 800A Service And Maintenance Manual

3.1 TIRES & WHEELS.

Tire Inflation

The air pressure for pneumatic tires must be equal to the air
pressure that is stenciled on the side of the JLG product or rim
decal for safe and proper operational characteristics.

Tire Damage

For pneumatic tires, JLG Industries, Inc. recommends that
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 service immediately. Arrangements
must be made for replacement of the tire or tire assembly.
For polyurethane foam filled tires, JLG Industries, Inc.
recommends that when any of the following are discovered,
measures must be taken to remove the JLG product from
service immediately and arrangements must be made for
replacement of the tire or tire assembly.
• a smooth, even cut through the cord plies which
exceeds 3 in. (7.5 cm) in total length.
• any tears or rips (ragged edges) in the cord plies
which exceeds 1 in. (2.5 cm) in any direction.
• any punctures which exceed 1 in. in diameter.
• any damage to the bead area cords of the tire.
If a tire is damaged but is within the above noted criteria, the
tire must be inspected on a daily basis to ensure the damage
has not propagated beyond the allowable criteria.
Tubes may be installed inside of tires that meet the criteria
outlined above for useable tires, only to eliminate small air
leaks (i.e., bead leaks, small nail puncture, etc.). Radial nail hole
repairs up to 3/8 inch diameter may be made by using an
industry approved commercial/industrial tire repair proce-
dure, such as an internally applied plug and liner patch repair
system, provided the nail hole is at least one inch inside the
shoulder. Do not attempt any section repairs or repairs to the
shoulder or sidewall areas.

Tire Replacement

JLG recommends a replacement tire be the same size, ply and
brand as originally installed on the machine. Please refer to the
JLG Parts Manual for the part number of the approved tires for
a particular machine model. If not using a JLG approved
replacement tire, we recommend that replacement tires have
the following characteristics:
• Equal or greater ply/load rating and size of original.
• Tire tread contact width equal or greater than
original.
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SECTION 3. CHASSIS & TURNTABLE
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 that all tires are inflated to the pressure recommended
by JLG. Due to size variations between tire brands, both tires
on the same axle should be the same and all four tires should
contain the same fill media.

Wheel Replacement

The rims installed on each product model have been designed
for stability 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 an unsafe
condition regarding stability.

Wheel Installation

It is extremely important to apply and maintain proper wheel
mounting torque.
WHEEL NUTS MUST BE INSTALLED AND MAINTAINED AT THE PROPER TORQUE
TO PREVENT LOOSE WHEELS, BROKEN STUDS, AND POSSIBLE DANGEROUS
SEPARATION OF WHEEL FROM THE AXLE. BE SURE TO USE ONLY THE NUTS
MATCHED TO THE CONE ANGLE OF THE WHEEL.
Tighten the lug nuts to the proper torque to prevent wheels
from coming loose. Use a torque wrench to tighten the fasten-
ers. If you do not have a torque wrench, tighten the fasteners
with a lug wrench, then immediately have a service garage or
dealer tighten the lug nuts to the proper torque. Over-tighten-
ing will result in breaking the studs or permanently deforming
the mounting stud holes in the wheels. The proper procedure
for attaching wheels is as follows:
1. Start all nuts by hand to prevent cross threading. DO
SECTION 3 - CHASSIS & TURNTABLE
• Wheel diameter, width and offset dimensions equal
to the original.
• Approved for the application by the tire manufac-
turer (including inflation pressure and maximum tire
load).
NOT use a lubricant on threads or nuts.
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