S&C Instruction Sheet 761-515
17
Installation
Step 13
Install a guide bearing assembly with each
additional vertical operating-pipe section posi-
tioned in accordance with the dimension shown
on the erection drawing. See Figure 13. Thrust
bearings are only necessary on the uppermost
guide bearing. Use rigid couplings to join these
additional pipe sections. Before installing the
coupling, back the piercing set screws out of the
coupling body so they do not protrude into the
coupling. Torque the clamp bolts to final tight-
ness, and then tighten the piercing set screws,
piercing the pipe. Continue turning until a firm
resistance is felt.
Step 14
At the universal coupling immediately above
the thrust bearing, torque the clamp bolts to
final tightness, and then tighten the piercing set
screw, piercing the pipe. Continue turning until
a firm resistance is felt.
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Rigid coupling
Guide bearing
Figure 13. Install the guide bearing for the additional pipe section.
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If the shipment includes an S&C Type AS-1A Switch
Operator and has been specified with standard minor
modification suffix “-S9” to the erection drawing num-
ber, refer instead to S&C Instruction Sheet 769-500,
“S&C Switch Operators—Type AS-1A, Instructions for
Installation .” If the shipment includes an S&C 6801M
Automatic Switch Operator and has been specified with
standard minor modification suffix “-S16” to the erection
drawing number, refer instead to S&C Instruction Sheet
1045M-510 .