MAINTENANCE/SERVICE
SICKLE
AND
SICKLE
DRIVE
(continued)
Guards
To bend guard tips up, position tool as shown at
(A)
and pull up.
To
bend tips
down,
position tool
as
at
(B)
and
push down.
Align
guards
with
guard
straightening
tool
(avail·
able from your Dealer Parts Department)
as
shown:
BENDING
GUARD
TIPS
DOWN
CAUTION: Always engage reel
props before working under reel.
A
TIP:
If
trouble is encountered cutting tangled, but
easy to
cut
material (canota, peas, grain) replace
guards with stub guards and install a sickle hold-
down on every guard.
If
material is tough to cut,
install stub guards with top guard and adjuster
plate from the
MaeDan
930
"Grass
Seed
Special" Header. See your MacDan dealer.
Check daily that guards are aligned to obtain
proper shear cut
between
sickle section
and
guard. Sickle sections should contact shear
surface
of
each guard.
Sickle
Hold-Downs
To
set hold-downs:
Check daily that sickle hold-downs are set to prevent
sickle sections from lifting
off guards but still permit
sickle to slide without binding. Set hold-downs after
guards are aligned.
1. Using a flat piece
of
bar (A), tap end
of
hold·
down
as shown. This allows adjustment
of
hold-
down
arch (B) without "pinching" sickle.
Clearance from hold-down to sickle section
should be .020 in. (0.5 mm).
SETTING SICKLE
HOLD-DOWNS
'·CAUTION:
Always
engage
reel
props
before
working
under
reel.
A
2.
After
adjusting all sickle hold-downs, run header
at
a low engine speed and listen
for
noise due to
insufficient clearance. Re-adjust as necessary
by
placing a .020 in. (0.5 mm) shim between hold-
down and section, then striking the hold-down
arch
(8)
with a hammer.
45
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