169441 177 Revision D
Installing Knife Drive Box Pulley
The knife drive box pulley is driven by the knife drive motor and the knife drive belt. To install the knife drive box pulley,
follow the recommended installation procedure provided here.
Figure 4.116: Knife Drive Box
1. Ensure the splines and bores in the pulley and drive arm
are free of paint, oil, and solvents.
2. Apply two bands (A) of medium-strength threadlocker
(Loctite
®
243 or equivalent) around the shaft as shown.
Apply one band at the end of the spline and the second
band at the approximate midpoint location.
3. Install pulley (B) so that it is flush with the end of the shaft.
4. Secure the pulley with 5/8 in. x 3 in. hex head bolt with
distorted thread NC lock nut.
5. Torque the lock nut to 217 Nm (160 lbf·ft).
Installing Knife Drive Box
The procedure for installing knife drive boxes is the same for single- and double-knife headers.
NOTE:
If the pulley was removed from the knife drive box, refer to Installing Knife Drive Box Pulley, page 177. If the pulley was not
removed, proceed to Step 1, page 177.
Figure 4.117: 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.
MAINTENANCE AND SERVICING
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