MacDon 963 Harvest Header - Manual (Page 45)

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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 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.
1. Slide sickle into place and replace bolt (D).
NOTE: Bottom of groove in sickle head pin
must be flush with top face (E) of pitman arm.
2. Tighten bolt (D) to 160 ft.lbs. (220 N.m)
Spare Sickle Storage
Provision has been made for storage of a spare
sickle in the header main tube, with access from
the R/H side.
1. From R/H end of header, insert sickle
complete with head into plastic sheath in
header main tube. Sickle sections point
rearward.
2. Push sickle into sheath until head (F) contacts
stop. Tighten hardware as shown to secure the
sickle.
INSTALLING SICKLE
D
NEEDLE BEARING INSTALLATION
A
B
C
E
D
INSTALLING SICKLE – FRONT VIEW
SPARE SICKLE STORAGE
F