MacDon 963 Harvest Header - Manual (Page 56)

55
TROUBLESHOOTING
SYMPTOM PROBLEM SOLUTION REF.
CUTTING COMPONENTS (continued)
Sickle back breakage. Bent or broken guard. Straighten or replace. 45
Worn sickle head pin. Replace. 43
Dull sickle. Replace. 43
Pitman arm loose at
wobble box.
Tighten or replace. 43
Ragged and uneven cutting
of crop.
Ground speed too fast. Reduce ground speed. 17
Cutting edge of guards
not close enough or par-
allel to sickle sections.
Adjust guards 45
Sickle hold-downs not
adjusted to permit sickle
to work freely.
Adjust hold-downs so sickle
will work freely, but still keep
sickle sections from lifting
off guards.
45
Cutterbar components
such as sickle sections,
guards are worn, dam-
aged, or broken.
Check and replace all worn
and broken cutting compo-
nents to obtain even cutting
of crop.
43
Cutterbar plugged with
material.
Adjust reel to sweep
material off cutterbar.
24
Sickle is not operating at
recommended speed.
Check engine speed of
windrower or combine.
*
Bent sickle, causing
binding of cutting parts.
Straighten a bent sickle.
Check guard alignment and
align as necessary for a
smooth cut.
43
45
Top of guard out of
adjustment or bent,
causing poor shearing
action.
Adjust tops of guards so
they are parallel to shear
edge of guards.
45
Reel speed too slow. Increase reel speed. 24
Loose sickle drive belt. Adjust belt tension. 46
Excessive vibration of
cutting parts.
Sickle is not operating at
recommended speed.
Check engine speed of
windrower or combine.
*
Excessive looseness of
cutting parts and sickle
drive.
Remove excessive play
from cutterbar and drive to
eliminate vibration. Then
make proper adjustments.
43
* See Windrower or Combine Operator's Manual.