NPK M20C, Instruction Manual, Page: 118 / 152

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118
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JAW SET INTERCHANGE
JAW SET STORAGE
If the removed jaw set is to be stored, pack the bushings with grease, lay the jaw set on
a wood or metal pallet and cover with a waterproof tarp (if storage is outside) .
JAW SET INSTALLATION INTO THE MAIN FRAME
NOTE: New jaw sets are shipped pre-assembled with factory installed assembly tubes.
Jaw sets that have been used and removed from a Material Processor will be equipped
with an assembly tube from a removal operation. If this is not the case, contact the
NPK Service Department for assistance.
1. For easier installation of the jaw set
(DO) into the main frame (DN), chain
(t4) or strap the jaws together to
restrict their movement. Wrap a lifting
chain or strap through the bore in the
upper jaw and attach it to a crane or
other lifting device.
2. Lift the jaw set (DO) and insert it
horizontally into the main frame (DN)
from the front (do not move up or
down) . For better movement control, a
second strap or chain can be used to
help level the jaw set. Adjust as
necessary to align the jaw pivot pin
bore on the jaw set with the jaw pivot
pin bore on the main frame. Maintain
this position. This is a tight, no shim
design. Alignment for insertion is
critical.
ATTACHMENT OF JAW SET TO THE MAIN FRAME
3. Manually insert the jaw pivot pin (BJ)
into the jaw pivot pin bore until it rests
in the bore without support.