Jaw Build-Up And Hardfacing (M38C, M28C, And M20C) - NPK M20S Instruction Manual

JAW INSPECTION AND MAINTENANCE
C JAWS: These jaws are hard-faced. The best time to rebuild them is as soon as the
hard face pattern is worn off. If the hard face pattern is gone and wear is in to the jaws
itself, the profile should be rebuilt to that of the template. Do not allow tip wear to
exceed .75" (19 mm) compared to the template or the cylinder will bottom out.

JAW BUILD-UP AND HARDFACING (M38C, M28C, and M20C)

For build-up and hard facing of jaw, use the NPK template to check jaws so that they
are to the original profile. Contact NPK for the correct templates, drawing no. M2804-
9501 (M28C) and M2004-9500 (M20C). Then, refer to JAW and TOOTH REBUILD
PROCEDURE.
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