MacDon 922 - Manual (Page 47)

Form # 46620 Issue 01/06 45
MAINTENANCE/SERVICE
SICKLE AND SICKLE DRIVE (continued)
Sickle Head Needle Bearing Installation
Using a flat-ended tool (A) with approximately the
same diameter as the bearing, push the bearing
into the sickle head until the top of the bearing is
flush with the step (B) in sickle head.
IMPORTANT: O-ring and plug must be in place in
sickle head before installing bearing. Assemble the
bearing with the stamped end (the end with
identification markings) against the tool.
Install seal (C) in top of sickle head with dust lip
facing outwards.
IMPORTANT: To avoid premature sickle head or
wobble box failure, be sure there is no looseness
in:
a) Fit of sickle head pin and needle bearing.
b) Fit of sickle head pin and pitman arm.
To Install Sickle
WARNING: Always stand to rear and
grasp rear edge of sickle during
installation to reduce risk of injury
from cutting edges. Wear heavy
gloves when handling sickle.
IMPORTANT: Always align guards and re-set
sickle hold-downs while replacing sickle. See
"Guards" and "Sickle Hold-Downs" in this section.
1. Slide sickle into place and replace bolt (D).
NOTE: When installing sickle head pin (E),
bottom out the pin in sickle head, then hammer
sickle head back up to pitman arm.
2. Tighten bolt (D) to 160 ft.lbs. (220 N.m)
Spare Sickle Storage
Provisions have been made for the storage of a
spare sickle. When storing sickle, slide in from end
of header and position sickle behind guides (C)
under the header. Secure sickle head with clamp
(B) as shown.
To remove spare sickle from its storage position,
remove clamp-retaining nut (A), remove clamp (B)
and pull sickle out.
INSTALLING SICKLE
D
SPARE SICKLE STORAGE – CLAMP END
A
B
SPARE SICKLE STORAGE – UNDER HEADER
C
NEEDLE BEARING INSTALLATION
A
B
C
E
D
BOTTOM OUT
PIN IN HEAD
INSTALLING SICKLE – FRONT