3-164
Fig. 3.507
⑯ Raise the middle mast to the usual position
and remove the support securing the inner
mast.
⑰ Lower the inner mast (with the middle mast in
the usual position) so that the bottom rollers
of the inner mast and the top rollers of the
middle mast can be accessed.
⑱ Replace or adjust the rollers as necessary.
⑲ Replace the top slippers and shims of the
outer and inner masts.
(3) Reassemble the inner masts in a sequence
opposite to disassembly.
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