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Slide the outer dual wheel over the inner cap nuts and repeat the entire procedure using the same
nut tightening sequence in Figure 9.
TORQUE NUTS PROPERLY.
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Be sure to tighten wheel nuts to the recommended nut torque. Do not overtighten. Tighten nuts
first to 50 ft-lbs, then to 450-500 ft-lbs torque (dry).Torque sequence should be per Figure 9.
ö
After the first 50 to 100 miles of operation, recheck the torque level and retighten nuts to the
proper level. When inner cap nuts are retightened, be sure to loosen the outer cap nuts first,
tighten inner cap nuts next, and then retighten outer cap nuts to proper torque level.
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Maintain nut torque at the recommended level through planned, periodic checks.
ö
Do
not
lubricate the nuts or studs.
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If air wrenches are used, they must be periodically calibrated for proper torque output. Use a
torque wrench to check the air wrench output and adjust the line pressure to give correct
torque.
6.1.3 RIM AND WHEEL MAINTENANCE
DURING TIRE CHANGE:
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Inspect the rims and wheels for corrosion, cracks, and damage. Thoroughly remove rust, dirt,
and other foreign materials from all surfaces. Pay particular attention to grooves for lock rings.
ö
Brush and spray paint where corrosion existed with a fast drying metal primer.
ö
Replace all damaged or cracked parts.
WHEN MIXING STEEL AND ALUMINUM WHEELS, USE AN INSERT BETWEEN THE TWO WHEELS TO
PREVENT CORROSION.
Not all nuts and studs can be used with all types of
wheels. The use of improper nuts and studs can cause nut loosening, stud
failure or premature wheel failure, which could cause an accident or injury.
Nuts must be kept tight by retorquing nuts on a
routine basis and using the proper nut torque and tightening sequence. Loose
nuts could result in loose wheels or premature wheel failure. This can result in
an accident or injury.
