freightliner Custom Classic MT45 2022, Maintenance Manual

Page: 83 / 138

40–01 Wheel Nut Checking
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.
NOTE: For all stud-piloted wheels, on each
wheel stud, the end that faces away from the
vehicle is stamped with an "L" or "R," depending
on which side of the vehicle the stud is installed.
Studs stamped with an "L" are left-hand
threaded and are installed on the driver’s side of
the vehicle. Studs stamped with an "R" are
right-hand threaded and are installed on the
passenger’s side of the vehicle.
For all stud-piloted wheels, when checking wheel
nuts on a dual disc assembly, remove one outer nut
at a time, tighten the inner nut, then reinstall the
outer nut. Repeat this procedure for all of the inner
wheel nuts in the sequence shown in
Fig. 1 , then
tighten all of the outer wheel nuts in the same se-
quence.
CAUTION
Too little wheel nut torque can cause wheel
shimmy, resulting in wheel damage, stud break-
age, and extreme tire tread wear. Too much wheel
nut torque can break studs, damage threads, and
crack discs in the stud hole area.
Tighten the wheel nuts 450 to 500 lbf·ft (610 to 680
N·m), and see
Fig. 1 for the tightening sequence of
stud-piloted, 6-stud wheels.
For hub piloted, 8- and 10- stud wheels, torque val-
ues vary with the stud size; consult the wheel manu-
facturer for recommended torque values. See
Fig. 2
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.
1
1
2
2
3
3 4
4
5
5
6
6
A B
08/20/96 f400119
A. Front and Inner Rear Dual
B. Outer Rear Dual
Fig. 1, Wheel Nut Tightening Sequence (stud-piloted
6-stud wheels)
09/18/2001
A B
f400164
1
10
8
6 3
5 4
9
2
7
1
2
4
6
7
5
8 3
A. 8-Stud Disc Wheel B. 10-Stud Disc Wheel
Fig. 2, Wheel Nut Tightening Sequence (8- and 10-stud
hub-mounted wheels)
Wheels and Tires
40
Walk-In Van Chassis Maintenance Manual, January 2008
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