MacDon FD75 OM - Manual (Page 404)

MAINTENANCE AND SERVICING
6.14 Checking and Adjusting Header Wing Balance
Header wing float is the ability of the header’s wings to react to changing ground conditions. If set too LIGHT, the
wings will bounce on the ground. If set too HEAVY, the wings will dig into the ground. The wings need to be balanced
for the float system to work properly.
CAUTION
To avoid personal injury, before servicing machine or opening drive covers, refer to 6.1 Preparation for
Servicing, page 241 .
6.14.1 Checking Wing Balance
This procedure describes how to check the balance of each wing.
If a wing has a tendency to be in a smile (A) or frown (B)
position, wing balance may require adjusting. Perform the
following steps to verify if the wings are not balanced and
the degree of imbalance:
Figure 6.289: Wing Imbalance
1. Adjust the header center-link to to approximately
halfway between ‘B’ and ‘C’ on indicator (A).
2. Park combine on level ground and raise header until
cutterbar is 6–10 in. (152–254 mm) off the ground.
3. Stop engine and remove key.
4. If installed, move transport/stabilizer wheels so that
they are supported by header. Refer to
4.7.1 Cutting
Height, page 51 .
Figure 6.290: Center Link
169894 390 Revision A