EQUALIZING BEAM SUSPENSION (HENDRICKSON)
Tube Type Beam End Mounting, RS 500 and RT 500
only, Figure 5
Apply a light coat of IH-251H-EP multi-purpose
grease to outer diameter of end tubes.
Align the beam end bushings with hanger
brackets and insert end tubes. Center tubes in
bushings so that ends of tubes are equidistant
from outer faces of hanger brackets.
Install end tube nuts. Make sure nuts are
properly threaded on tubes. Do not tighten nuts
at this time.
Bolt Type Beam End Mounting, Figure 4
Align beam end bushings with hanger brackets
and insert bushing adapters. Lubricate adapters
with a light coat of IH-251H-EP mutli-purpose
grease. Flat surface on adapters must be in
Tap adapters into bushing until adapter flanges
contact outer faces of hanger brackets.
Install bolt and locknut. Do not tighten nut at this
Bolt Type End Mounting with Split-Ring Type
Adapters, Figure 4
Place inner adapter (with split-ring) inside beam
end bushing with grooved end of adapter toward
bowl of axle housing. Lubricate adapter with a
light coat of IH-251H-EP multi-purpose grease.
Make sure nut is in position in lugs of adapter.
Align beam end bushing with hanger brackets
and install outer adapter.
Start bolt through outer adapter, push inner
adapter with bolt until groove in adapter appears
past face hanger.
Install split-ring. Thread bolt into nut. Do not
tighten bolt to specified torque at this time.
When bolts are torqued after torque tools are
installed, place a bar between the lugs on the
adapter to hold the nut while tightening the bolt
with a wrench.
Ball and Socket Beam End Bushing Type Mounting,
Assemble ball and socket beam end bushing type
mounting as shown in Figure 10. Do not tighten nuts at
this time. Repeat same procedure at opposite end of
CAUTION -- WHEN REINSTALLING THE "RUBBER
BUSHED" EQUALIZING BEAMS TO THE AXLES AND
SADDLES, DO NOT TIGHTEN NUTS UNTIL TORQUE
RODS ARE INSTALLED AND EQUALIZING BEAMS
ARE LEVEL WITH THE FRAME. (THIS IS TO ASSURE
THAT THE RUBBER IS IN A NEUTRAL POSITION,
ELIMINATING THE POSSIBILITY OF TORSIONAL
WIND-UP, WHICH MAY AFFECT RIDE QUALITY.)
THEN TIGHTEN ALL NUTS TO RECOMMENDED
TORQUE (SEE SPECIFICATIONS)
Place one end of cross tube into center sleeve of
installed equalizer beam. Be sure tube seats into sleeve.
Assemble other equalizer beam to cross tube and
position beam in spring saddle.
Roll axle assemblies with equalizer beams under
center of saddle. Make sure the outer bushings
are lined up with center of the saddle legs.
Lower vehicle frame centering saddles on beam
Install saddle cap and nuts. Do not tighten until
torque rods are installed and equalizer beams
The cross center tube is free to rotate or float in
the bushing assemblies at each side. However,
in some cases where the vehicle has been
operating in mud or perhaps water, the cross
center tube may be seized. Whether it is loose or
seized will have no effect upon its purpose. The
function of the tube is to assure alignment
between the left and right equalizer beams.
The saddle caps serve to secure sleeve with
bushing. The clamping effect of the caps
against the sleeve and bushing has no effect
upon the movement of the cross center tube.
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