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Adjusting Blade Gap
The gap between the upper and lower blades (as
they pass each other) must remain even along the
length of blades to produce clean, sharp cuts. Two
blade gap adjusters (see Figure 51) allow opera-
tor to quickly adjust blade gap to accommodate
different workpiece thicknesses.
Initially, this blade gap adjustment has been made
at the factory. However, over time and with nor-
mal wear, and after replacing the blades, you will
need to re-adjust the blade gap. The position of
the upper blade is adjustable. The lower blade is
fixed.
If the blade gap is too wide, the workpiece will not
cut correctly and show signs of bending, ripping,
or tearing. If the blade gap is too narrow, the upper
blade will have difficulty passing the lower blade
and the cutting edges may become damaged.
The shear blades or hold-
down can easily pinch,
crush, or amputate fingers
or other body parts. Always
keep hands, fingers, and
other body parts away from
the blades and hold-down
during operation.
Checking Blade Gap
Set both blade gap adjusters to "0". Use a piece
of construction paper to make cuts along the full
length of the blades. All cuts should be clean with-
out bending or tearing the paper.
•
If the paper does not cut cleanly only on one
end of the shear, the upper blade needs to be
adjusted on that end.
•
If the paper does not cut cleanly in the middle
of the shear, adjust the gap in the middle of
the upper blade.
•
If the paper does not cut cleanly along the
entire length of the shear, adjust the upper
blade along its length.
-38-
Adjusting Upper Blade
The primary blade gap adjustment is done with an
eccentric cam on the top of each blade guide. The
blade gap can be fine-tuned with 14 jack screws
on the upper blade frame (see Figure 51). Blade
clearance when the blade gap adjusters are set
to 0" should be 0.002"–0.003"; clearance with the
adjusters set to 0.0175" is 0.010"–0.012".
If the paper does not cut cleanly after proper
adjustment of the upper blade, the blades may
need to be sharpened or replaced (refer to
Removing & Replacing Blade on Page 41 for
instructions).
Blade
Upper Blade Frame
Guide
Blade Guide
Eccentric Cam
(1 of 2)
Figure 51. Upper blade adjustments.
Items Needed
Sheet of Construction Paper ............. As Needed
Feeler Gauge Set, 0.002" – 0.012" .................... 1
Wrench or Socket 25mm ................................... 1
Wrench or Socket 30mm ................................... 1
Wrench or Socket 36mm ................................... 1
Wrench Open-End 19mm .................................. 1
Wrench Open-End 12mm .................................. 1
Hex Wrench 4mm .............................................. 1
Hex Wrench 3mm .............................................. 1
To adjust upper blade:
1.
DISCONNECT MACHINE FROM POWER!
2.
Remove rear cover.
3.
Remove blade cover.
Model G0845P (Mfd. Since 01/18)
Blade
Guide
Jack Screws
(2 of 14)
Blade Gap
Adjusters
Qty
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