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Revision B
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Figure 5.51: Knifehead
12. Manually stroke the knife to its outer limit.
13. Clean the area around the knifehead.
14. Remove grease fitting (B) from the pin.
NOTE:
Removing the grease fitting will make it easier to reinstall
the knifehead pin later.
15. Remove bolt and nut (A).
16. Use a screwdriver or chisel in slot (C) to release the load on
the knifehead pin.
17. Use a screwdriver or chisel to pry the pin upwards in the
pin groove until the pin is clear of the knifehead.
18. Push the knife assembly inboard until it is clear of the
output arm.
19. Seal the knifehead bearing with plastic or tape to keep out
dirt and debris unless it is being replaced.
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Figure 5.52: Knife Drive Box
20. Remove bolt (A) that clamps knife drive arm (B) to the knife
drive box output shaft.
21. Remove knife drive arm (B) from the knife drive box
output shaft.
22. Remove the four knife drive box mounting bolts (C) and (D).
NOTE:
If shims are set on bolts (C) between the knife drive box
and housing, mark the location of the shims for later
reinstallation.
NOTE:
Do
NOT
remove bolt (E); it is factory-set to properly
position the knife drive box in the correct fore-aft position.
CAUTION
The knife drive box and pulley weigh over 35 kg (65 lb.) Use
care when removing or installing. Lug (L) can be used for lifting.
23. Remove the knife drive box from the header and set aside.
Removing Knife Drive Box Pulley
To remove the knife drive box pulley, follow the recommended removal procedure provided here.
NOTE:
Before removing the knife drive box pulley, remove the knife drive box from the header. For instructions on removing the
knife drive box, refer to
