JLG 1230ES Operator Manual - Manual (Page 73)

SECTION 6 - GENERAL SPECIFICATIONS AND OPERATOR MAINTENANCE
3121221 – JLG Lift – 6-9
6.1 TIRES AND WHEELS
Tire Wear and Damage
Inspect tires periodically for wear or damage. Tires with worn
edges or distorted profiles require replacement. Tires with sig-
nificant damage in the tread area or side wall, require immedi-
ate evaluation before replacing the machine into service.
Wheel and Tire Replacement
Replacement wheels must have the same diameter and pro-
file as the original. Replacement tires must be the same size
and rating as the tire being replaced.
Wheel Installation
It is extremely important to apply and maintain proper wheel
mounting torque.
WHEEL LUG NUTS MUST BE INSTALLED AND MAINTAINED AT THE PROPER
TORQUE TO PREVENT LOOSE WHEELS, BROKEN LUG NUTS, AND POSSIBLE
SEPARATION OF WHEEL FROM THE AXLE. BE SURE TO USE ONLY THE LUG
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 lug nuts or permanently deform-
ing the mounting holes in the wheels. The proper procedure for
attaching wheels is as follows:
1. Start all lug nuts by hand to prevent cross threading. DO
NOT use a lubricant on threads or nuts.
2. Tighten lug nuts in the following sequence.
Figure 6-3. Wheel Lug Nut Tightening Sequence