Checking the Wheel Nut
Important: In addition to the maintenance interval in this manual, check the wheel nut torque the first 50 to 100 miles (80 to 160 km) of operation after a wheel has been removed and installed. The vehicle should be taken to a Freightliner dealer to ensure that the wheel nuts are tightened correctly.
Caution: Too little wheel nut torque can cause wheel shimmy, resulting in wheel damage, stud breakage, and extreme tire tread wear. Too much wheel nut torque can break studs, damage threads, and crack discs in the stud hole area.
For hub-piloted, 8- and 10-stud wheels, torque values vary with the stud size. See Fig. for the tightening sequence of hub-piloted, 8- and 10-stud wheels. Before tightening, apply 2 drops of SAE 30W oil to a point between the nuts and flanges.
Tighten the wheel nuts.
Important: The vehicle should be taken to a Freightliner dealer to ensure that the wheel nuts are tightened correctly.
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On 8-stud or 10-stud, hub-pilot hubs with 20-mm studs, tighten the wheel nuts 280 to 310 lbf·ft (380 to 420 N·m). For the correct tightening sequence, see Fig..
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On 8-stud or 10-stud, hub-pilot hubs with 22-mm studs, tighten the wheel nuts 450 to 500 lbf·ft (610 to 678 N·m). For the correct tightening sequence, see Fig..
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8-Stud Disc Wheel
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10-Stud Disc Wheel