214323 421 Revision B
Figure 6.139: Knife Drive Box
CAUTION
The knife drive box and pulley weigh over 35 kg (65 lb.) Use
care when removing or installing it. 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 knife drive box side bolts (A) slightly, then tighten
bottom bolts (B) to ensure proper contact with the vertical
and horizontal mounting surfaces.
NOTE:
Do NOT torque the bolts at this time.
Figure 6.140: Knife Drive Box
4. Apply two bands (A) of medium-strength threadlocker
(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 midpoint location.
5. Slide 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.
MAINTENANCE AND SERVICING
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