McIntyre 320 - Component Servicing and Replacement

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320/407/500/600.41912-ENG
6.6. Shear Blade Turning & Changing
(See Illustration 7.1, Page 46)
Always switch off and isolate the Shear from the mains
electrical supply before maintenance.
Always wear Gloves when handling Blades. Only use
McIntyre Blades.
6.6.1. Introduction
The Blades supplied with the Shear are not re-grindable, however they have four cutting
edges and can be rotated through eight cutting positions.
Note:Thexingscrewsaresmearedwithcopperbasedgreasetoaid
subsequent removal.
6.6.2. Replacing or Turning the Top Blade
• Close the Top Jaw, stop and isolate the Shear from the electrical supply.
• Remove the Top Blade, Item 1.37.
• ExaminetheTopJaw,Item1.36,itshouldbeatandburrfree,leoffanyburrs.It
is important that the Blade sits against the Jaw without any gaps. Rectify if this is
not the case.
• Remove any burrs from the Top Blade, choose a new cutting edge, or replace with
anewitem,andrettheTopBladewiththeFasteners,Items1.35.Ensurethatthe
Fasteners are tight.
Note: Top and Bottom Blades are interchangeable and should be
replaced or turned at the same time for optimum Blade life and cutting
performance.
• The Fasteners should not protrude from the Blade when fully tightened, Rectify if
this is the case.
6.6.3. Removing side movement from the Main Pivot
Excessive side movement in the Main Pivot Bearing will negate Bottom Blade settings. It
is necessary to remove any side movement in the Main Pivot before resetting the Bottom
Blade. To do this:
• Loosen the Take-Up Screw Lock Nut, Item 1.20, then unscrew the Take-Up Screw,
Item 1.21, by about six turns.
• Remove the Pivot Lock Nut’s Grub Screw, Item 1.31.