Sickle Installation; Sickle Head Bearing Removal; Sickle Head Bearing Installation - MacDon A30-S Operator's Manual

7.8.3

Sickle Installation

WARNING
Stand to rear of sickle during installation to
reduce risk of injury from cutting edges.
Wear heavy gloves when handling sickle.
IMPORTANT
Align guards and re-set sickle hold-downs
while replacing sickle.
E
D
a. If sickle head pin (A) is installed in the sickle
head (B), remove the pin.
b. Slide sickle into place and align sickle head (B)
with pitman arm.
c. Install sickle head pin (A) in pitman arm (C) and
tap it down into the sickle head, ensuring pin is
bottomed out in the sickle head.
d. Tap the underside of the sickle head until the pin
is flush with the upper face (C) of the pitman arm
(C).
e. Carefully adjust to achieve a 0.010 in. (.25 mm)
gap at (D) with the knife laying flat on the first
few guards.
f. Replace bolt and nut (E).
g. Tighten nut to 160 ft∙lbf (220 N·m).
h. Replace grease zerk (F) in pin.
i. Grease bearing if it has been replaced.
Form # 169000
MAINTENANCE/SERVICE
A
C
B
F
106
7.8.4

Sickle Head Bearing Removal

a. Remove the sickle. See Section 7.8.2.
K
H
b. Using a flat-ended tool (G) with approximately
the same diameter as the plug (H), tap out the
seal (J), bearing (K), and plug (H) from the
underside of the head.
The seal can
removing the bearing.
seal, check pin and needle bearing for
wear. Replace if necessary.
7.8.5

Sickle Head Bearing Installation

a. Place O-ring (L) and plug (H) in sickle head.
IMPORTANT
Assemble the bearing with the stamped
end (the end with identification markings)
against the tool.
b. Using a flat-ended tool (G) with approximately
the same diameter as the bearing (K), push the
bearing into the sickle head until the top of the
bearing is flush with the step (M) in sickle head.
c. Install seal (J) in top of sickle head with lip facing
outwards.
IMPORTANT
To avoid premature sickle head or wobble
box failure, be sure there is no looseness
in:
• Fit of sickle head pin and needle bearing.
• Fit of sickle head pin and pitman arm.
d. Install sickle.
G
J
L
M
REMOVAL
NOTE
be replaced without
When changing
Model Year - 2009