MacDon D1X Series, Operator'S Manual, Page: 163 / 274

MAINTENANCE AND SERVICING
10. Tighten hex nuts (A) on idler pulleys (B).
11. To check for the correct knife timing, rotate the drive
slowly by hand, and observe where the knives overlap
at the center of the header.
IMPORTANT:
The knives must begin moving at the exact same
time, and must move in opposite directions.
12. If necessary, adjust the knife timing by loosening the
right-side drive belt just enough to reposition it to the
next cog(s), and proceed as follows:
a. If the right knife leads the left knife, rotate the
right-side driven pulley (C) clockwise.
b. If the right knife lags the left knife, rotate the
right-side driven pulley (C) counterclockwise.
Figure 5.97: Knife Drive – Right Side
13. Ensure the drive pulleys don’t rotate, and tension the
right-side drive belts (refer to Step
10., page 151
to
Step
11., page 151
).
IMPORTANT:
Do
NOT
use the adjuster bolt at the drive pulley to
adjust the timing belt tension.
14. Recheck the timing (refer to Step
11., page 151
) and
readjust if necessary (refer to Step
12., page 151
).
15. Close both endshields. Refer to
Closing Endshields,
page 32
.
214044
151
Revision A