Roper Whitney U616, Руководство по эксплуатации и обслуживанию

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PRELOADING Once the brake crown has been set, the brake must be adjusted to produce
ADJUSTMENT straight bending and a uniform radius. Follow the procedure below:
1. Loosen the apron tensioning nuts on the apron, (see Figure 12) and the
upper and lower beam tensioning nuts (see Figure 9).
2. Loosen the upper and lower beam tensioning screws (see Figure 9).
3. Raise the upper beam to its maximum open height.
4. Check the top edge of apron in relation to the top surface of the bed.
The top edge of apron must be 1/64” below the top surface of the bed at
each end. If not, loosen the hinge bolts and adjust the apron up or down
using the apron jack screws (see Figure 13). After the apron edge is
adjusted to the proper position, be sure to retighten the hinge bolts.
5. Adjust the upper and lower beam tensioning screws finger tight; and
then tighten each with a wrench approximately one full turn (five flats)
(see Figure 9).
Figure 12. Preloading Adjusting Components.
APRON TENSIONING
ADJUSTING NUT
7. Tighten lower beam tensioning nut until the edge of the bed is 1/64”
above the top edge of the apron at the center (see Figure 9). The edges
of the bed and apron will then be parallel from end to end, with the edge
of the bed 1/64” higher than the apron edge.
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