E. SPARE PARTS FOR MINIMUM DOWN-
(4.) These checks cover the most common main-
tenance adjustments on a band saw machine. If
they are not performed regularly, good blade life
and straight cuts cannot be achieved. They take
only a few minutes and will assure that your
machine will perform well.
D. PROBLEMS AND SUGGESTIONS
(1.) SAW NOT CUTTING STRAIGHT FROM
TOP TO BOTTOM
A. The most common cause is loose blade guide
Required for any part order:
rollers (Fig. 2) which allow the blade to "lean"
from a vertical position, causing crooked cuts.
See Section A for adjustments.
Parts that can normally be obtained from local
B. The saw blade guide casting is rotated so the
mill supply stores, etc., are not listed.
blade is not held in a vertical position. See
Section A for adjustment.
C. Parts not listed: Give a complete detailed
description of what it is, where it is used, and
C. Long work piece is not being supported
what it does in operation. This will often give us
horizontally and level through the machine.
enough information to supply the part.
D. Check metering valve as outlined in Section C.
D. This parts list does not show all the parts that
(2.) SAW NOT CUTTING STRAIGHT FROM
make up the machine. We have tried to show all
SIDE TO SIDE
the common parts that may require
A. The saw vises are not at 90" with the blade as
illustrated in Fig. 5. See Section A for ad-
Also some parts may not be shown due to
machine design changes. When this occurs,
order parts as described above.
B. Long work piece is not being positioned
squarely to the saw blade and flat against the
(3.) POOR BLADE LIFE
A. Metering valve is not closing completely,
allowing the cutting head to slowly bleed down,
overfeeding the blade. See Section B for ad-
B. Blade guide rollers or carbides are too tight
against the blade, preventing the blade from
moving up and down freely enough to operate
the metering valves.
C. Metering valve is dirty inside so that it cannot
close. Test as outlined in Section C.
(4.) CUTTING HEAD WILL NOT LOWER
A. The metering valve is held closed because the
guide rollers are too tight and will not permit
the blade to move downward, opening the
B. Metering valve control rod is adjusted too long,
stopping the valve from opening. See Section B
C. Metering valve is held closed by dirt or other
foreign material so that it cannot open. The dirt
will normally be lodged between the valve bore
a n d v a l v e s p o o l , causing i t t o b e c o m e