MacDon D1X Series, Operator'S Manual, Page: 147 / 274

MAINTENANCE AND SERVICING
8. Slide the knife into place and align the knifehead with
the output arm.
NOTE:
Remove the grease zerk from the knifehead pin for
easier installation of knifehead pin.
9. Install the knifehead pin (A) through the output arm (C)
and into the knifehead.
10. Set the groove (B) in the knifehead pin 1.5 mm
(1/16 in.) above the output arm (C). Secure with
5/8 x 3 in. hex head bolt and nut (D), and torque to
217 N
· m (160 ft · lbf).
Figure 5.57: Knifehead
11. Install the grease zerk (A) into the knifehead pin, and
turn the grease zerk for easy access.
IMPORTANT:
Slowly apply grease to the knifehead until slight
downward movement of the knifehead is observed.
Do
NOT
overgrease the knifehead. Overgreasing
leads to knife misalignment causing excessive
heating of guards and overloading of drive systems.
If overgreasing occurs, remove the grease zerk to
release pressure.
Figure 5.58: Knifehead
12. Check the alignment of the knife drive box pulley and
the drive pulley. If pulleys require adjustment, contact
your MacDon Dealer.
13. Tighten the knife drive box side bolts (A) fi rst, then
tighten the bottom bolts (B). Torque to 271 N · m
(200 ft · lbf).
14. Move the output arm to the mid-stroke position, and
ensure the knife bar doesn’t contact the front of the
fi rst guard. If the knife drive box requires adjustment,
contact your MacDon Dealer.
15. Install and tension the knife drive belts. For non-timed
belts refer to
Tensioning Non-Timed Knife Drive Belts,
page 141
, for timed belts refer to
Tensioning Timed
Knife Drive Belts, page 147
. For timed double-knife
headers, also check the knife timing, refer to
Adjusting
Double-Knife Timing , page 149
.
16. Close the endshield. Refer to
Closing Endshields,
page 32
.
Figure 5.59: Knife Drive Box
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Revision A