OTMT SC4 User Manual And Installation Manual page 21

usually are stamped into the channel above
the teeth. Some chucks have corresponding
numbers stamped into each slot of the chuck.
In that case, install the corresponding jaw in
each slot, in sequence from #1 to #3.
Numbered chuck jaws
To install the jaws, look at the front of the
chuck through one of the jaws slots. Slowly
rotate the chuck key clockwise until the leading
edge of the spiral scroll appears in view in the
slot.
Start of spiral in slot #3
Rotate the scroll in the opposite direction until
the leading edge moves back under the edge
of the slot. Now press jaw #1 into the slot as
far as it will go and hold it in position.
Rotate the chuck key clockwise again so that
the leading edge of the scroll thread engages
with the teeth of the jaw. Continue rotating the
chuck key until the leading edge of the scroll
thread is visible in the next jaw slot. Install jaw
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#2 and jaw #3, then advance the jaws to make
sure that they all meet evenly at the center of
the chuck. If not, back them out and repeat this
procedure.
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