HN
®
FR Series
Component Replacement
36
17730-285
FIGURE
8-20
1. Clean the end hub bores with emery
cloth or hone, removing any nicks or
metal buildup from bushing removal.
2. Measure the equalizing beam end hub
bore inner diameter and the bushing
outer diameter. The Hendrickson speci-
fication for the equalizing beam end
hub bore diameter of equalizing beam
is 4.369" / 4.361", see Figure 8-20. If components are
NOT
within the specified range,
replacement is required.
3. The end hub bore may have a more substantial leading chamfer at one end of the bore
than the other. Take advantage of the larger chamfer by pressing in the new bushing from
this end.
NOTE
Always use the bushing’s outer metal for pressing operations, unless otherwise instructed.
Pressing on the bushings inner metal may damage the bushing requiring bushing replacement.
BAR PIN END BUSHING INSTALLATION
1. Place the equalizing beam in a shop press with the end hub (see Figure 8-21) squarely
supported on the press bed or receiving tool, see Special Tools Section of this publication.
2. Install OTC 1757 end bushing installation tool (refer to Special Tools Section of this pub-
lication) on the new end bushing as shown in Figure 8-21. Tighten the through bolt until
the two halves of the tool touch. The installation tool compresses the rubber between the
inner and outer metal of the bushing to allow press force to be transmitted only to the outer
metal of the bushing.
3. Lubricate the equalizing beam end hub inside diameter AND the bar pin end bushing’s
outer metal with a heavy layer of NLGI #2 – EP (Extreme Pressure) lithium base grease,
see Figure 8-21.
FIGURE 8-21
4. Position the equalizing beam end bushing and installation tool on the end hub. Verify the
bolt holes in the end bushing are in line with the beam axis, see Figure 8-22.
Pro Gear and Transmission • 906 W. Gore St. Orlando, FL 32805 • 1 (877) 776-4600 / (407) 872-1901 • [email protected]