Sickle Hold-Downs; Sickle Hold-Down Adjustment -Pointed Guards; Sickle Hold-Down Adjustment -Stub Guards - MacDon A30-S Operator's Manual

7.8.8

Sickle 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.
Guards should
adjusting hold-downs.
7.8.8.1 Sickle Hold-Down Adjustment -Pointed
Guards
Single Knife
B
a. Turn the adjuster bolt (A). Using a feeler gauge,
clearance from hold-down to sickle section
should be 0.004-0.024 in (0.1-0.6 mm).
For larger adjustments,
necessary to loosen bolts (B), turn
adjuster bolt (A), then retighten nuts (B).
Double Knife
D
C
a. Torque nuts (C) to 35 ft∙lbf (46 N∙m).
b. Turn the adjuster bolts (D). Using a feeler
gauge, clearance from hold-down to sickle
section should be 0.004-0.016 in (0.1-0.4 mm) at
the guide tip, and 0.004-0.040 in (0.1-1.0 mm) at
rear of guide.
c. Torque nuts (C) to 53 ft∙lbf (72 N∙m).
d. After adjusting all hold-downs, run header at a
low engine speed and listen for noise due to
Form # 169000
MAINTENANCE/SERVICE
NOTE
be aligned prior
A
0.004-0.024 in
(0.1-0.6 mm)
NOTE
it may
0.004-0.040 in
(0.1-1.0 mm)
0.004-0.016 in
(0.1-0.4 mm)
insufficient clearance. Insufficient clearance will
also result in overheating of the sickle and
guards.
7.8.8.2 Sickle Hold-Down Adjustment -Stub
Guards
Single Knife
to
E
a. Torque nuts (E) to 35 ft∙lbf (46 N·m).
b. Turn the adjuster bolts (F). Using a feeler gauge,
clearance from hold-down to sickle section
should be 0.004-0.016 in (0.1-0.4 mm) at the
guard tip, and 0.004-0.040 in (0.1-1.0 mm) at
rear of guide.
c. Torque nuts (E) to 53 ft∙lbf (72 N·m).
Double Knife
be
a. Torque nuts (G) to 35 ft∙lbf (46 N∙m).
b. Turn the adjuster bolts (H). Using a feeler
gauge, clearance from hold-down to sickle
section should be 0.004-0.016 in (0.1-0.4 mm) at
the guide tip, and 0.004-0.040 in (0.1-1.0 mm) at
rear of guide.
c. Torque nuts (G) to 53 ft∙lbf (72 N∙m).
d. After adjusting all hold-downs, run header at a
low engine speed and listen for noise due to
insufficient clearance. Insufficient clearance will
also result in overheating of the sickle and
guards.
112
F
0.004-0.016 in
(0.1-0.4 mm)
0.004-0.040 in
(0.1-1.0 mm)
G
H
0.004-0.016 in
0.004-0.040 in
(0.1-0.4 mm)
(0.1-1.0 mm)
Model Year - 2009