NPK M20C, Instruction Manual, Page: 116 / 152

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116
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JAW SET INTERCHANGE
DETACHMENT OF THE JAW SET FROM THE MAIN FRAME
13. Once loosened, remove the pivot pin
nut (c32).
14. Using a non-metallic
(e.g. nylon or
wood) rod (t3) or dead blow hammer,
drive the jaw pivot pin (BJ) so that it
extends out only about 1” (25 mm)
on the side shown.
It is at this stage that the assembly tube,
NPK part no. 35027310 (for M20 units) or
part no. 35027200 (for M28/M38 units), is
used to keep the jaws united as the jaw
pivot pin is removed.
15. Set the assembly tube in the bore snugly against the jaw pivot pin.
16. Install the assembly tube (t44) by
carefully driving it through the bore.
This action will simultaneously push
the jaw pivot pin (BJ) out the other
side and lock the jaws together.
Continue careful driving of the
assembly tube until the jaw pivot pin
extends 12 – 14” (300 – 350 mm)
from the main frame, then stop.