Sickle Guards; Guard Alignment; Guard Replacement - MacDon A30-S Operator's Manual

7.8.7

Sickle Guards

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.
7.8.7.1

Guard Alignment

a. Retrieve tool from LH side of header.
b. To adjust guard tips downward, position tool as
shown at and push down.
DOWNWARD ADJUSTMENT
c. To adjust tips upward, position tool as shown
and pull up.
UPWARD ADJUSTMENT
Form # 169000
MAINTENANCE/SERVICE
7.8.7.2
a. Stroke the sickle so that the sickle sections are
b. Remove the two nuts (A) and bolts that attach
c. Remove the guard and hold-down.
d. Position new guard and on cutterbar and install
e. Install hold-down and secure with nuts. Tighten
f.
108
TIP: If trouble is encountered cutting tangled, or
fine-stemmed material, replace guards with stub
guards. If material is tough to cut, install stub
guards with top guard and adjuster plate. A stub
guard conversion kit for the Windrower is
available from your dealer. Refer to Section 9.5,
Stub Guard Conversion Kit.

Guard Replacement

Check daily that guards are firmly bolted to the
cutterbar and are not worn or broken. Replace
as required. A worn or broken guard can be
replaced without removing sickle from cutterbar
Pointed Guard Replacement -Single Knife
spaced midway between the guards.
A
guard (B) and hold-down (C) (if applicable) to
the cutterbar.
carriage bolts.
IMPORTANT
The second, third, and fourth outboard
guards on drive side of the header do not
have a support. Ensure that the proper
replacement is installed.
NORMAL
nuts to 50 ft∙lbf (68 N∙m).
Check and adjust clearance between hold-down
and sickle. Refer to Section 7.8.8, Sickle Hold-
Downs.
C
B
DRIVE SIDE
Model Year - 2009