If You Are Not Familiar With Pinning Small Format Interchangeable Cores
Schlage • SFIC service manual • 9
7. With all chambers combinated, turn the plug back to
the 12 o’clock position so all the pin stacks can fall into
place. Caution: The bottom of the Schlage keyway is
very wide and open. Do not turn the plug in a direction
which would allow the pins to engage in the bottom of
the key slot.
add
enough to
total 23
control
plus 10
minus plug
total
deep op.
cut minus
shallow op.
cut
shallow
operating
cut
Top Pin
Build-up Pin
Master Pin
(if any)
Bottom Pin
Memorize:
C 10 - Plug Total + Build Up
Total Stack Height = 23
Plug Total
8. Add a very small amount of lubricant
1
into each
chamber. If using graphite, do not overdo this or the
springs will not have room to compress properly.
9. Cap the core:
a. Slide the core into the capping block.
b. Install a spring into each chamber.
c. Slide cap on at the top of each chamber.
Pins fall
into keyway
Plug turned
too far
1 Schlage uses FinLub TF from Interflon. Other lubricants can be used,
however, performance can vary greatly depending on lubricant
properties.
d. Chamber by chamber, press the capping tool down
and strike it sharply with a plastic or rawhide mallet
to press the cap all the way in and seal the
chamber. Never use a metal hammer. It will
eventually ruin your capping block and pin.
You may prefer to install one cap and drive it into
place before installing the next. The jolt from the
mallet can cause loose caps to jump out of place.
10. Test all three keys (control, TMK and change key).
11. Spray a small amount of lubricant into the keyway and
run a key in and out several times to work the lubricant
through the core. This step is especially important for
Schlage patented cores. This is the only way to lubricate
the special side pin.
Plastic or
Rawhide Mallet
Capping Tool
Cap
Spring
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