Hendrickson Suspension Inspection
Inspect the suspension assembly for wear, cracks, and damage to its components. Replace the component(s) if any wear, cracks, or damage exists. 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, then check for movement of the inner metal of the rubber end bushing. See Fig.. 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.
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Beam Hanger
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Equalizer Beam
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Jack
Fig. 1, Raising the Beam End
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 210 to 240 lbf·ft (285 to 325 N·m). See Fig.. Do not overtorque.
Note: Do not use the three-piece adapter without the intermediate tube.
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Nut
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Adapter
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Intermediate Tube
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Inner Metal of Beam End Bushing
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Beam Hanger
Fig. 2, Three-Piece Adapter-Type Beam End Connection
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.