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7
Adjusting the cutting blades
If the tool is operating properly, but is not cutting satisfactorily, you may have to adjust
the blades.
1. Before attempting adjustment, turn off and unplug the tool.
2. Using a probe through the motor vents in the side of the
cover (48), turn the fan until the cutting blades are open
to the maximum amount. You can measure the gap
between the blades using an automotive feeler gauge
(not included).
3. To determine the best spacing, use the formula:
Distance in mm (L) =0.2x thickness of steel plate in mm.
(This is the same as the gap being equal to the material
thickness divided by 5.) For example, a thin steel plate which is 1 mm thick should be cut with
a shear blade setting of 0.2 mm. This assumes a hardness of the material at 390N/mm. For
softer material, reduce the gap. For harder
material, increase the gap.
4. Loosen the socket head screw (6) that
holds the upper shear blade (12) in place.
Adjust the upper shear blade until the space
between the upper and lower cutting edge
is between 0.1 mm and 0.6 mm. Then
tighten the socket head screw (6) to fix the
upper shear blade (12) in position.
MAINTENANCE
•
Maintain your Metal Shear.
It is recommended that the general condition of any
Metal Shear be
examined before it is used. Keep your
Metal Shear in good repair by adopting a program of
conscientious repair and maintenance. Have necessary repairs made by qualified service
personnel.
•
Check the condition of this tool before each use.
1. Plug in the tool, and turn it on to run freely for one minute.
2. After the tool has run for one minute, turn it off and put 3-4
drops of light machine oil in the oil port on the head of the
tool. (See picture at right)
3. Also apply a small amount of oil into the space between
the arbor (13) and the shaft sleeve (15).
•
To remove or replace the blades:
1. Unplug this tool before attempting any maintenance.
2. Remove the screw and washer (6,5,4) holding the upper shear
blade (12) & remove it as shown in the photo at right, using the
included hex key.
3. Remove the screw and washer (6,5,4) holding the lower shear
blade (2) & remove it as in photo below right.
4. To reinstall sharpened blades or new blades, first reinstall the
lower shear blade (2) and tighten it. Then install the upper
