Determining Replacement Or Build Up - NPK M20S Instruction Manual

GENERAL MAINTENANCE

DETERMINING REPLACEMENT OR BUILD UP

The piercing tip profile must be maintained for piercing efficiency. Piercing tip build up
and/or replacement should be completed after all cutting blade, guide blade, and tunnel
blade maintenance has been completed (see "K JAW BLADE MAINTENANCE AND
ADJUSTMENT", STEPS 1 through 5.)
whether the piercing tip can be built up or should be replaced.
STEP 1a
Place a steel straight edge (t15) on the face of the primary blades (BG). The side of
the piercing tip (DA) should be even/parallel with the primary blade face. Record the
amount of clearance/gap (d65) between the straight edge and the side of the tip, see
Fig. A.
STEP 2a
Close the jaws until the piercing tip (DA) just enters the female jaw (BI) tunnel. Note
the wear on the corners of the piercing tip and also the gap (d66) between the lead
edge of the piercing tip and the tunnel blade (DB), see Fig. B.
Perform the following steps to determine
Fig. A
Fig. B
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