JLG 450A_AJ Series II Service Manual - Manual (Page 52)

SECTION 3 - CHASSIS & TURNTABLE
3-2 – JLG Lift – 3121180
Wheel Installation
It is extremely important to apply and maintain proper
wheel mounting torque.
WHEEL NUTS MUST BE INSTALLED AND MAINTAINED AT
PROPER TORQUE TO PREVENT LOOSE WHEELS, BROKEN
STUDS, AND POSSIBLE DANGEROUS SEPARATION OF WHEEL
FROM AXLE. USE ONLY NUTS MATCHED TO CONE ANGLE OF
WHEEL.
Tighten lug nuts to proper torque to prevent wheels from
coming loose. Use a torque wrench to tighten fasteners. If
you do not have a torque wrench, tighten fasteners with a
lug wrench, then immediately have a service garage or
dealer tighten lug nuts to proper torque. Over-tightening
will break studs or permanently deform mounting stud
holes in 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. Torque to specifications shown in Table 3-1 below.
4. Torque wheel nuts after first 50 hours of operation
and after each wheel removal. Check torque every 3
months or 150 hours of operation. Torque Hub
(Machines built Before S/N 0300071527).
Table 3-1. Wheel Torque Chart
TORQUE SEQUENCE
1st Stage 2nd Stage 3rd Stage
40 ft-lb
(55 Nm)
100 ft-lb
(130 Nm)
170 ft-lb
(255 Nm)