Shaft - S&C Mark VI Instructions For Installation Manual

Step 24
Attach the fl exible coupling plate to the coupling
fl ange on the disconnect using the following
procedure:
Thread the flexible coupling attachment bolts
through the flexible coupling plate and through
the coupling flange.
Tighten the bolts to draw the flexible plate
flush against the flange; this will deform the
threads in the flexible plate, resulting in a bind-
ing, nonslip connection.
Install and tighten the self-locking nuts.
DO NOT use lockwashers with the flexible
coupling attachment bolts. See Figure 21.
Step 25
Before installing the interphase shaft, make sure
that the cutting tips of the piercing set screws
do not protrude through the clamp.
With all pole-units in the closed position,
loosely fit the sections of interphase shaft
between the appropriate coupling assemblies.
Take care not to bring the switch "out of
toggle" when fitting the shaft sections into the
couplings. The interphase shaft should extend
slightly past the flange end of the clamp. See
Figure 22.
NOTICE
Shaft sections are cut to the appropriate
length at the fatory. Carefully examine
and measure all sections of shaft before
cutting any of the shaft sections. The
shaft sections can be trimmed using a pipe
cutter.
Although the shaft sections are cut to the
appropriate length at the factory, it may be
necessary to cut them in the field. With the
interphase shaft inserted into the coupling,
tighten the clamp bolts equally so that the clamp
pulls down evenly on the coupling.
Tighten the piercing set screws, piercing the
shaft and continue turning until a firm resistance
is felt. See Figure 23.
Continue connecting the remaining sections
of interphase shaft.
Flexible coupling plate
Figure 21. Attach the plate to the coupling fl ange.
Clamp bolts
Clamp
Figure 22. Insert the interphase shaft section between the couplings. Fasten
the clamp to the couplings.
Piercing set screws
Figure 23. Tighten the piercing set screws.
19
INSTALLATION
Attachment bolts
Interphase shaft
Coupling
fl ange
712-502