MacDon FD75 OM - Manual (Page 351)

MAINTENANCE AND SERVICING
6.11.4 Adjusting Header Draper Tracking
Each draper deck has a fixed drive roller (A) and a spring-loaded idler roller (B) that can be aligned by adjuster rods
so that the draper tracks properly on the rollers.
If the draper is tracking incorrectly, refer to the following directions to correct the tracking:
CAUTION
To avoid personal injury, before servicing machine or opening drive covers, refer to 6.1 Preparation for
Servicing, page 241 .
Table 6.14 Header Draper Tracking
Tracking
At
Location
Adjustment Method
Backward Increase ‘X’
Tighten nut
(C)
Forward
Drive
Roller
Decrease ‘X’
Loosen nut
(C)
Backward Increase ‘Y’
Tighten nut
(C)
Forward
Idler
Roller
Decrease ‘Y’
Loosen nut
(C)
1. Refer to the above table to determine which roller
requires adjustment and the required adjustment.
2. To change ‘X’, the back end of the roller is adjusted
with the adjuster mechanism at the inboard end of the
deck as follows:
Figure 6.167: Adjustments
A - Drive Roller B - Idler Roller
C - Draper Direction
X - Drive Roller Adjust.
Y - Idler Roller Adjust.
3. Adjust the drive roller at ‘X’ as follows:
a. Loosen nuts (A) and jam nut (B).
b. Turn adjuster nut (C).
Figure 6.168: Drive Roller
169894 337 Revision A