JLG 1100S Service Manual - Manual (Page 43)

SECTION 3 - CHASSIS & TURNTABLE
3121256 – JLG Lift – 3-1
SECTION 3. CHASSIS & TURNTABLE
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 prod-
uct or rim decal for safe and proper operational character-
istics.
Tire Damage
For pneumatic tires, JLG Industries, Inc. recommends that
when any cut, rip, or tear is discovered that exposes side-
wall or tread area cords in the tire, measures must be
taken to remove the JLG product from service immedi-
ately. Arrangements must be made for replacement of the
tire or tire assembly.
For polyurethane foam filled tires, JLG Industries, Inc. rec-
ommends 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 inches (7.5 cm) in total length
• any tears or rips (ragged edges) in the cord plies which
exceeds 1 inch (2.5 cm) in any direction
• any punctures which exceed 1 inch 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 insure the
damage hasn’t propagated beyond the allowable criteria.
Wheel and Tire 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 diam-
eter, 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 fasteners. 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-tightening 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
NOT use a lubricant on threads or nuts.
2. Tighten nuts in the following sequence:
3. The tightening of the nuts should be done in stages.
Following the recommended sequence, tighten nuts
per wheel torque chart.
4. Wheel nuts should be torqued before first road use
and after each wheel removal. Check and torque
every 3 months or 150 hours of operation.
Table 3-1. Wheel Torque Chart
TORQUE SEQUENCE
1st Stage 2nd Stage 3rd Stage
45 ft. lbs.
(60 Nm)
100 ft. lbs.
(140 Nm)
180 ft. lbs.
(252 Nm)