214323 399 Revision A
Figure 5.142: Knifehead
8. Slide the knife into place and align the knifehead with
the output arm.
9. For ease of removing or installing knifehead pin,
remove grease zerk from pin.
10. Install knifehead pin (A) through the output arm and into
the knifehead. Tap knifehead pin (A) down, make sure
the pin is seated at the bottom of the knifehead.
11. Using a feeler gauge, check that the gap at location (E)
is 0.25 mm (0.01 in.).
12. Set groove (B) in the knifehead pin 1.5 mm (1/16 in.)
above output arm (C). Secure with 5/8 in. x 3 in. hex
head bolt and nut (D), and torque to 217 Nm (160 lbf·ft).
Figure 5.143: Knifehead
13. Install grease zerk (A) into the knifehead pin, and turn
the grease zerk for easy access.
IMPORTANT:
Grease knifehead just enough to start a slight
downward movement. Overgreasing will lead to knife
misalignment which causes guards to overheat and
drive systems to overload.
Figure 5.144: Knife Drive Box
14. Tighten knife drive box side bolts (A) first, then tighten
the bottom bolts (B). Torque to 271 Nm (200 lbf·ft).
15. Move the output arm to the midstroke position, and
ensure the knife bar doesn’t contact the front of the first
guard. If the knife drive box requires adjustment,
contact your MacDon Dealer.
16. Install and tension the knife drive belts. Refer to
Tensioning Knife Drive Belts, page 402
17. Close the endshield. Refer to Closing Endshield, page
32.
MAINTENANCE AND SERVICING
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