JLG E300 Service Manual - Manual (Page 35)

SECTION 3 - CHASSIS & TURNTABLE
3121253 – JLG Lift – 3-1
SECTION 3. CHASSIS & TURNTABLE
3.1 TIRES AND WHEELS
Tire Wear and Damage
Inspect tires daily for wear or damage. Tires with worn
edges or distorted profiles require replacement. Tires with
significant damage in the tread area or side wall, require
immediate evaluation before replacing the machine into
service.
Wheel and Tire Replacement
Replacement wheels must have the same diameter and
profile 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 NUTS MUST BE INSTALLED AND MAINTAINED AT THE
PROPER TORQUE TO PREVENT LOOSE WHEELS, BROKEN STUDS,
AND POSSIBLE 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.
4. Wheel nuts should be torqued after first 50 hours of
operation and after each wheel removal. Check the
torque as outlined in Section 2.
Table 3-1. Wheel Torque Chart
TORQUE SEQUENCE
1st Stage 2nd Stage 3rd Stage
40 ft lbs (55 Nm) 95 ft lbs (130 Nm) 170 ft lbs (230 Nm)