MSD 7R SHEARS
Scheduled Maintenance
Section 6 Page 5
LOWER SHEAR BUILD UP
AND HARDSURFACING
CONTINUED
6.
To hardsurface the build-up just completed, we
recommend using Amalloy 814 or equivalent. Apply
3 or 4 single passes running the length of the shear
and across on the nose plate (figure 6-7). No more
than two layers of this rod should be used.
7.
Hardsurface should end approximately at the
midpoint of the primary blade. Stagger the ends of
the welds. DO NOT end welds within 1” (25 mm)
of bolt holes. DO NOT undercut ends of weld. Taper
ends of welds into parent material with grind marks
going with the grain.
8.
To hardsurface the front and sides of the nose
plate, apply single passes of Amalloy 814 rod or
equivalent in a diamond pattern of approximately
1-½” (38 mm) (see figure 5-8). Peen each pass.
NOTICE
It is important to use an air operated slag peener on
each pass of weld to relieve stress. Grind off in line
with cutting edges.
FIGURE 6-7
FIGURE 6-8
