6
4. Spreader Bar Disassembly
The spreader bar holding assembly is shown in Fig. 2. It has been designed to accept the spreader bar
and not rotate when the spreader bar rotates. It attaches to the bottom attachment of the scale using a
0.500”x1.75”x”3/8 BSW shoulder bolt and 2 nylon spacers. The assembly is locked with the holding nut
pinned to the bolt with a screw and locknut.
Spreader bar disassembly is done as follows:
1. Remove the retaining screw and nut from the main bolt and
holding nut. It will be reassembled in step 5.
2. Using a ¾” socket and 5/16” Allen wrench, remove the main
bolt from the holding nut. The painted line on top of the
bolt and on the nut are intended to give general alignment
when reassembling (Fig. 2 and 3).
3. Remove the U bracket.
4. Remove the O ring on the pivot bolt. The pivot bolt will now
be free and can be removed from the spreader bar.
5. Inspection of the pivot bolt and white acetyl wear washer that
is fitted over the pivot bolt can now be performed. Replace
the wear washer if required and lubricate with a light mineral
oil or silicon based lubricant.
Reassembly of spreader bar:
1. Replace the pivot bolt into the spreader bar.
2. Replace the O-ring onto the pivot bolt.
3. The bolt has 2 milled flats on the topside. These flats fit into the channel welded to the base of
the U-bracket. Replace the main bolt through the channel and bracket. Assure that the sleeve is
seated into the channel. When properly assembled the sleeve will not rotate with respect to the
bracket.
4. Assemble the holding nut to the main bolt. One side of the nut has been marked with white paint.
This side goes up so that when assembled the paint is visible.
5. Tighten the bolt and nut until the hole in the screw aligns with the holes in the nut. When properly
tightened, the retaining screw will be able to be inserted through the bolt and holding nut. (Refer
to Step 1 for how the screw was removed). Note: The nut would have been fully tightened in the
original assembly and it may require some effort to align the hole.
6. Assemble the screw through the hole and attach the nylon locknut. Tighten to assure the screw
fully enters the nylon insert.
Joerns Healthcare recommends that a new nyloc nut be used upon reassembly.
This completes the spreader bar reassembly.
Fig. 2
Fig. 3
