Hendrickson Suspension
Torque Values
Description Size
Torque
lbf·ft (N·m)
Fore and Aft Torque
Rod Mount Nut
— 95 (130)
Table 2, Hendrickson Suspension Torque Values
All Hendrickson beam end fasteners must maintain
their torque values to firmly clamp the rubber bushing
inner metal tubes to the beam hanger legs.
WARNING
Insufficient beam end fastener torque could cause
the beam to separate from the axle, and result in
loss of vehicle control.
Tighten the nut (see Fig. 1) to the torque value in
Table 2. Do not over-torque.
Check the drive-axle-flange fasteners (Fig. 2) for
tightness. Tighten the fasteners as follows:
Tighten 1/2-inch drive-axle stud nuts (with or without
dowels) 75 to 115 lbf·ft (102 to 156 N·m), and tighten
5/8-inch drive-axle stud nuts 150 to 230 lbf·ft (203 to
312 N·m).
31–02 Fifth Wheel Inspecting
WARNING
All fifth wheel maintenance, adjustment, and re-
building must be done only by a qualified me-
chanic. Improper or incomplete procedures could
result in possible disengagement of the trailer
from the tractor, causing serious damage or injury.
Wear safety goggles during removal, installation,
and rebuilding. Failure to do so can result in per-
sonal injury, due to parts ejecting under spring
compression.
Fontaine
Disconnect the tractor from the trailer. For instruc-
tions, see Chapter 10 of the
Business Class
®
Trucks
Driver’s Manual
. Thoroughly steam clean the fifth
wheel, then make the following checks:
1. Look for cracks in the fifth wheel assembly,
mounting brackets, and mounting parts.
f320110a
05/27/93
1
2
2
3
4
5
NOTE: Do not use the three-piece adapter without the
intermediate tube.
1. Nut
2. Adapter
3. Intermediate Tube
4. Inner Metal of Beam
End Bushing
5. Beam Hanger
Fig. 1, Three-Piece Adapter-Type Beam End Connection
06/09/94
f400090b
1
2
NOTE: Spoke wheel shown.
1. Drive-Axle-Flange
Studs and Nuts
2. Drive-Axle Flange
Fig. 2, Drive-Axle Flange
Frame and Frame Components31
Business Class Trucks Maintenance Manual, December 200231/2
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