Leslie Controls D Series - Manual (Page 12)

CFTIIP-015
Rev.0
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This document is the property of Circor Flow Technologies India Pvt Limited should not copied or
reproduced in one form or another.
Page 12 of 15
Replacing Only Old Stem
A. Removing Old Pin and Stem from the
Plug
1. Place the plug shank on a V-block, and
using a drift punch, drive out the old pin.
Note: If it is necessary to drill out the pin, a
drill bit somewhat smaller than the pin
should be used and the remainder of the pin
driven out.
2. Hold the plug shank in a vise, (see
bordered note in the paragraph A on previous
page).
3. Lock one nut against another one to the
end of the plug stem and, using a wrench on
the lower nut, unscrew the stem from the
plug. The stem is removed by turning it anti-
clockwise.
Note: In case of great sizes and/or high
temperature service and some other cases,
the plug stem has a shoulder which allows to
unscrew plug stem without using of the two
nuts, (see Table 3 for the required
Wrench sizes).
B. Screwing Stem to Plug
Refer to paragraph B of the above section
“REPLACING PLUG AND STEM”.
C. Drilling the New Stem
Place the plug shank on a V-block and, using
a suitable size drill bit, drill the stem using
the hole in the plug as a guide.
Note: If the hole in the plug shank has been
slightly damaged while removing of the old
pin, choose a drill bit and a pin with a
diameter somewhat larger than the normal
Pin.
D. Pinning
Select the correct size pin according to plug
shank diameter and pin hole diameter, (see
Figure 5). Proceed as described in the above
paragraph D2, taking care not to damage the
plug shank area.
Ensure plug stem alignment as indicated in
the above paragraph D3.