freightliner FL50 1998 - Page 92

Hendrickson Suspension Inspecting
Inspect the suspension assembly for wear, cracks,
and damage to its components. Replace the compo-
nent(s) if any wear, cracks, or damage exists. For
instructions, see Group 32 of the
Business Class
®
Trucks Service Manual . Check all fasteners for
tightness.
Check for distorted or frayed rubber at the beam end
bushings. If the bushings are damaged, replace
them.
Check that the ends of the equalizer beam are not
lower in the beam hanger.
If the equalizer beam ends appear lower, use a jack
to raise each beam end, and check for movement of
the inner metal of the rubber end bushing (see
Fig. 5). Movement cannot be corrected by tightening
the fastener, because parts could be damaged. If
there is movement, replace the rubber end bushings
and all connecting parts.
After repairs to the suspension, check the fastener
torque after the vehicle has been in service for 2500
miles (4000 km). Tighten the adapter-type beam end
connection nut (see Fig. 6), 210 to 240 lbf·ft (285 to
325 N·m). Do not over-torque.
WARNING
Insufficient beam end fastener torque could cause
the beam to separate from the axle. This will
cause loss of vehicle control resulting in property
damage, serious personal injury or death.
f320039a
05/27/93
1
2
3
1. Beam Hanger
2. Equalizer Beam
3. Jack
Fig. 5, Raising the Beam End
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. 6, Three-Piece Adapter-Type Beam End Connection
Suspension32
Business Class Trucks Maintenance Manual, July 199932/4