Page 28 Section 5
Maintenance
MSD SABER SERIES SHEARS
WELD-IN TIP MAINTENANCE
if equipped
Check the condition of the piercing tip daily. It should
be square and fi t closely between the blades of the
lower shear. All blade maintenance should be complet-
ed before building up the piercing tip. The condition
of the piercing tip has a large effect on the piercing
ability of the shear. If the tip is worn, it is suggested
that the tip be built up and hardsurfaced. If the tip is
badly worn, it is recommended that a new piercing tip
be installed. Instructions for replacing the tip are on
the following pages. This maintenance should be done
at the end of the work day to allow adequate cooling
time before putting the shear back into production.
1.
Use a straight edge to determine how much build-
up is needed along the sides of the piercing tip. Place
the straightedge along the cutting blades and extend
it beyond the tip (see
Figure 5-26
). The tip should be
fl ush with the blades.
2.
Now do the same on the other side of the upper
shear. The tip should be fl ush with the front wear plate
(see
Figure 5-27
). If there is a gap, this area needs to
be built up.
3.
Use the build-up template provided by Stanley
LaBounty to determine the amount of build-up needed
on the front and bottom surfaces of the tip. Line up
the template with the edges of the cutting blade and
check the wear (see
Figure 5-28
on page 31).
4.
Clean all dirt and grease from area to be built up.
5.
Preheat the area surrounding the tip to about 200°F
(100°C) to remove moisture. Preheat the area within 6
inches (150 mm) of the weld location to a minimum of
400°F (200°C) and a maximum of 450° (230°C). Main-
tain this temperature range throughout the process.
FIGURE 5-26
PIERCING TIP
FLUSH WITH BLADE
STRAIGHT EDGE
The upper shear must be grounded when welding on
the upper shear to prevent the possibility of electric
shock and arcing through the cylinder or main pivot
components.
FIGURE 5-27
STRAIGHT EDGE
PIERCING TIP
FLUSH WITH WEAR
PLATE
