TM 9-3405-213-14&P
TROUBLE CHARTS- Continued
TROUBLE
CAUSE
REMEDY
3. OVER FEED OF
A. Each machine includes a feed chart. This chart indicates recommended
feeds and speeds for general metal cutting. Set the feed on your
SAW BLADE. If
machine according to this chart. Then increase or decrease feed
blade is led too fast,
according to the stock you are cutting. Correct adjustment will increase
teeth are quickly
blade life and production.
dulled because they
are over-loaded
B. Check for abnormal feed down of saw frame.
Normal feed Down, while
Crooked cutting also
reciprocating at 150 strokes per minute with
feed dial set at zero and
Develops because
400163 flexible feed valve (Fig. 4) shut off, is
Y2" to Y3" in ten minutes.
the blade is
Normal leak down, while machine is in Rest
position, is full drop from
deflected by
upper most position in six or seven hours
excessive feeding.
C. To correct this condition see Abnormal Feed Down of Saw Frame on
4. BLADE MAY NOT
A. Check squareness of blade with table by placing a square on table bed.
Raising and lowering the saw blade checks For straight travel. Placing
BE SQUARE WITH
CROOKED
square on face of rear vise jaw and against saw blade checks for blade
STOCK BEING
alignment. Blade should be at 900 angle with the jaws. Jaws must be
CUT.
CUTTING
tight against aligning key at rear of vise jaw.
AND
B. After heavy or long service, it may be necessary to resurface the vise
jaws to insure correct alignment.
BLADE
C. Check to make sure that stock stands are level with the machine.
BREAKAGE
5. 200338 side gibs not
A. Tighten saw blade in place so that bearing surfaces on saw frame will be
adjusted properly.
under normal working stress. See Item 2 on Page 9.
(Continued)
See Fig. 8. Gibs
hold Frame in proper
B. Remove 300315 wrist pin when adjusting 200338 and 200257-200258
alignment. If too
loose, they will
permit blade to run.
C. Adjust bottom gibs to obtain snug sliding fit by removing laminations on
If too tight, they may
401992 shim under 200257 & 200258. Each lamination is .002".
score the bearing
surface.
D. Adjust side gib with Setscrews. Slide frame full strokes by hand after
adjustment of each screw and before replacing 300315 wrist pin.
6. Blade holders
A. Blade holders may be twisted or reversed causing misalignment. Make
300295 and 300302
sure that the front blade holder is relatively in the same position as the
out of alignment.
rear blade Holder so that the blade clamping faces are in alignment.
See Fig. 16A.
B. Blade holders 300295 and 300302 may be bent and require straightening
or replacement. See Fig 16A.
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