MacDon D65 SP DHOM - Manual (Page 68)

OPERATION
Controlling Header Angle
Header angle is varied by adjusting the length of the top center-link (mechanical or hydraulic) between the windrower
and the header.
Refer to your windrower operator’s manual for adjustment details.
4.7.4 Reel Speed
Reel speed is one of the factors that determines the manner in which the crop is moved from the cutterbar
onto the drapers.
The reel performs best when it appears to be driven by the ground. It should move the cut crop evenly through the
cutterbar and onto the drapers without bunching and with minimal disturbance.
In standing crop, reel speed should be slightly higher than or equal to ground speed.
In flattened crop or a crop that is leaning away from the cutterbar the reel speed needs to be higher than the ground
speed, either by increasing the reel speed or decreasing the ground speed.
Excessive shattering of grain heads or crop loss over the header backtube may be indications that the reel speed is
too high. Excessive reel speed also increases wear of reel components and overloads the reel drive.
Lower reel speeds can be used with 9-bat reels which is an advantage in shatter prone crops.
NOTE:
9-bat reels are available on 15, 20, and 25 foot headers from the factory. A conversion kit to change a 6-bat reel
to a 9-bat reel is also available for these headers.
Refer to 4.6.2 Header Settings, page 46 for recommended reel speeds in specific crops and crop conditions.
The reel speed is adjustable with the controls in the windrower cab. Refer to your windrower operator’s manual for
adjustment details.
Optional Reel Drive Sprockets
Optional reel drive sprockets are available as an alternative to the factory-installed sprocket for use in special crop
conditions.
The header is factory equipped with a 19 tooth sprocket to drive the reel which is satisfactory for most crops. Other
sprockets are available to provide more torque to the reel is heavy cutting conditions, or to allow higher reel speeds
in light crops where increased ground speeds are used. Refer to the following table and contact your MacDon dealer
for ordering information.
For installation details, Refer to 6.9.1 Replacing Reel Drive Sprocket, page 221 .
169899 56 Revision A