JLG T350 Service Manual - Manual (Page 44)

SECTION 3 - CHASSIS & TURNTABLE
3-8 – JLG Lift – 3121198
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 for the axle size
on your trailer, 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 proce-
dure 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
after the first 10 miles, 25 miles, and again at 50
miles. Check periodically thereafter.
Lug Nuts (Bolts)
Lug nuts are prone to loosen right after a wheel is
mounted to a hub. When driving on a remounted wheel,
check to see if the lug nuts are tight after the first 10, 25
and 50 miles of driving and before each tow thereafter.
CHECK LUG NUTS FOR TIGHTNESS ON A NEW TRAILER OR
WHEN WHEEL(S) HAVE BEEN REMOUNTED AFTER THE FIRST 10,
25 AND 50 MILES OF DRIVING.
METAL CREEP BETWEEN THE WHEEL RIM AND LUG NUTS WILL
RESULT IN A WHEEL COMING OFF, LEADING TO DEATH OR SERI-
OUS INJURY. TIGHTEN LUG NUTS BEFORE EACH TOW.
Table 3-2. Wheel Torque Chart - ANSI, ANSI Export, CSA,
Aus
TORQUE SEQUENCE - Ft Lbs (Nm)
1st Stage 2nd Stage 3rd Stage
20-25
(25-35)
50-60
(70-80)
90-120
(122-164)
Table 3-3. Wheel Torque Chart - CE
TORQUE SEQUENCE - Ft Lbs (Nm)
1st Stage 2nd Stage 3rd Stage
15
(20)
35
(45)
66
(90)