MacDon FlexDraper FD1 Series, Operator'S Manual, Page: 382 / 510

MAINTENANCE AND SERVICING
CAUTION
Knife drive box with pulley weighs over 65 lb. (35 kg).
Use care when removing or installing. Lug (L) can be
used for lifting.
1. Position the knife drive box onto the header mount and
install the belt onto the pulley.
2. Secure the knife drive box to the frame using two
5/8 in. x 1-3/4 in. grade 8 hex head bolts (A) on the
side and two 5/8 in. x 2-1/4 in. grade 8 hex head
bolts (B) on the bottom.
3. Tighten the knife drive box side bolts (A) slightly, then
tighten the bottom bolts (B) to ensure proper contact
with the vertical and horizontal mounting surfaces. Do
NOT
torque the bolts at this time.
Figure 5.110: Knife Drive Box
4. Apply two bands (A) of Loctite
®
#243 (or equivalent)
to the output shaft as shown. Apply one band at the
end of the output shaft and the second band at the
approximate mid-point location.
5. Slide the output arm (B) onto the output shaft.
Rotate the pulley to ensure the splines are properly
aligned and the drive arm clears the frame on the
inboard stroke.
Figure 5.111: Knife Drive Box
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Revision A