ProGear Hendrickson HN FR Series Service Manual page 36

NOTE
NOTE
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Pro Gear and Transmission • 906 W. Gore St. Orlando, FL 32805 • 1 (877) 776-4600 / (407) 872-1901 • parts@eprogear.com
WHEN REMOVING AND INSTALLING BUSHINGS IN THE EQUALIZING BEAMS, FOLLOW THE
PROCEDURES OUTLINED IN THIS PUBLICATION. DO NOT USE A CUTTING TORCH TO REMOVE THE
BUSHING OUTER METALS PRESSED IN THE EQUALIZING BEAM BORES. WELDING, TORCHING OR
ATTACHING MATERIAL TO THE EQUALIZING BEAM MUST NEVER BE PERFORMED. THE USE OF HEAT
CAN ADVERSELY AFFECT THE STRENGTH OF THE EQUALIZING BEAMS AND CAN CAUSE DAMAGE TO
THE EQUALIZING BEAM ASSEMBLY, LOSS OF VEHICLE CONTROL AND POSSIBLE PERSONAL INJURY
OR PROPERTY DAMAGE.
DISCARD USED FASTENERS. ALWAYS USE NEW FASTENERS TO COMPLETE A REPAIR. FAILURE TO
DO SO COULD RESULT IN FAILURE OF THE PART OR MATING PARTS, LOSS OF VEHICLE CONTROL,
PERSONAL INJURY, OR PROPERTY DAMAGE.
Hendrickson recommends the use of Grade 8 bolts and Grade C locknuts. If flange head bolts
and locknuts are not used then hardened structural washers must be used under bolt heads
and locknuts.
BAR PIN END BUSHING REMOVAL
Whenever an equalizing beam is removed for repair, or inspection of the equalizing beam
end connection reveals movement, measure the distance between the axle bracket legs for
correct width. Refer to Axle Bracket in Preventive Maintenance Section of this publication for
measurement location and dimensions. An axle bracket outside of the measurement range
must be repaired or replaced. Consult the vehicle manufacturer for inspection, component
repair and replacement instructions.
1. Remove equalizing beam assembly from vehicle as detailed in the equalizing beam disas-
sembly instructions in this section.
2. Place the equalizing beam in the shop press with the beam end hub squarely supported
on the press bed.
3. Press on the end bushing inner metal, see Figure 8-19,
of the end bushing until the inner metal is flush with the
top of the equalizing beam end hub. This will dislodge
the confinement washer and move the bushing rubber
away from the outer metal of the bushing so the push
out tool can be installed, see Special Tools Section of this
publication.
4. Center the bushing push out tool directly on the bushing's
outer metal and press the bushing out of the equalizing
beam end hub.
5. After removing the bar pin end bushings, thoroughly in-
spect each end hub bore.
INSPECTION
After removing the bar pin end bushings, thoroughly inspect the beam bores. If the equalizing
beam is damaged from end bushing removal, replacement of the equalizing beam is required,
replace with a new equalizing beam. DO NOT re-bush or otherwise use an equalizing beam that
has been damaged.
FAILURE TO REPLACE AN EQUALIZING BEAM THAT HAS BEEN DAMAGED FROM BUSHING REMOVAL
CAN RESULT IN THE FAILURE OF THAT BEAM, LEADING TO LOSS OF VEHICLE CONTROL AND POSSIBLE
PERSONAL INJURY OR PROPERTY DAMAGE.
When installing bar pin end bushings the following steps will minimize the chance of damaging
a new bushing:
35
HN ® FR Series
FIGURE 8-19
Component Replacement