MacDon D65 SP DHOM - Manual (Page 185)

MAINTENANCE AND SERVICING
5. If the belt (A) is tracking to one side of the knife drive
box pulley (B), the likely cause is an out of position idler
pulley (C). Proceed to Step
7., Adjusting Belt Tracking,
page 174 to correct the problem.
Figure 6.96: Knife Drive Belt
6. To correct the tracking problem on the drive pulley,
adjust the position of the cross shaft support tube
as follows:
a. Loosen nut (A) on support assembly (B).
b. Slide the support (B) rearward in slot (C) to correct
toe-out condition, or forward to correct toe-in
condition.
c. Retighten nut (A).
d. Operate the header and check the tracking. Adjust
the support assembly as required.
e. If the belt tracking problem continues, proceed to
Step
8., Adjusting Belt Tracking, page 175 .
Figure 6.97: Cross-Shaft Support
169899 173 Revision A