Demco CR 108, Руководство оператора

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TORQUE REQUIREMENTS
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It is extremely important to apply and maintain proper wheel mounting torque on your trailer axle.
Torque is a measure of the amount of tightening applied to a fastener (nut or bolt) and is expressed
as length times force. For example, a force of 90 pounds applied at the end of a wrench one foot long
will yield 90 lbs-ft of torque. Torque wrenches are the best method to assure the proper amount of
torque is being applied to a fastener.
NOTE: Wheel nuts or bolts must be applied and maintained at the proper torque
levels to prevent loose wheels, broken studs, and possible dangerous separation of
wheel from your axle.
Be sure to use only the fasteners matched to the cone angle of your wheel (usually 60 degrees or 90
degrees). The proper procedure for attaching your wheels is as follows:
1. Start all bolts or nuts by hand to prevent cross threading.
2. Tighten bolts or nuts in the following sequence.
3. The tightening of the fasteners should be done is stages. Following the recommended
sequence, tighten fasteners per wheel torque requirements diagram:
4. Wheel nuts or bolts should be torqued before first road use and after
each wheel removal. Check and re-torque after the first 50 miles and
again at 100 miles. Check periodically thereafter.
WHEEL AND RIM TORQUE REQUIREMENTS
Description Application Minimum Torque Maximum Torque
(lbs-ft) (lbs-ft)
1/2” Cone Nut 12” – 13” Wheel 50 65
14” – 15” Wheel 90 120
5/8” Cone Nut Flat Disc Wheel 175 225
3/4” Hex Nut Demountable
Ring Clamp 210 260
3/4” Spherical Nut Single Wheel 450 500
Inner Dual 450 500
1-1/2” Spherical Nut Outer Dual 450 500
5/8” Flange Nut Wheels 275 325