MacDon 3020 Pull-Type Windrower - Manual (Page 35)

24
OPERATION
DELIVERY OPENING WIDTH
The width of the delivery opening affects the width
and configuration of the windrow. The decision to
widen or narrow the opening should be based on
the following factors:
- Combine pick-up capability
- Weather conditions (rain, humidity, wind)
- Drying time available
See "Windrow Characteristics" in this section for
the strengths and weaknesses of the various
windrow configurations with respect to these
factors.
The 21, 25 and 30 ft. windrowers are factory
assembled with a delivery opening of 53 inches
(1345 mm).
To widen opening - 21, 25 & 30 ft. units:
1. Remove screws from connector slat of right
hand draper.
2. Remove right hand draper drive belt. See
"Draper Drive Belts" in Maintenance/ Service
section.
3. Remove right draper track extension. Remove
roller support from extension. Store extension
on right leg of windrower.
4. Reinstall roller support (B) without extension.
5. Remove hardware securing drive roller at
cutterbar. Move roller (C) to bracket (D). Adjust
so roller (C) is perpendicular to cutterbar (E).
6. Re-connect draper at new length and cut off
excessive flap.
7. Install shorter drive belt provided.
8. Adjust draper tracking. See Maintenance/
Service section.
To narrow opening - 21, 25 & 30 ft. units:
1. Obtain "Narrow Opening Option Package" from
your dealer.
2. Remove screws from connector slat of left
draper.
3. Add the 15 inch (380 mm) long extension (from
option package) to the draper.
4. Remove left hand draper drive belt. See
"Draper Drive Belts" in Maintenance/Service
section. Install longer belt (from option
package) on drive shaft pulley.
5. Remove left roller support. Attach extensions
(A) from option package and reinstall roller
support (B).
6. Remove hardware securing drive roller at
cutterbar. Move roller (C) to bracket (D). Adjust
so roller (C) is perpendicular to cutterbar (E).
7. Reconnect draper and install longer belt on
drive roller pulley.
8. Adjust draper tracking. See Maintenance/
Service section.
REMOVE RIGHT EXTENSION, REINSTALL
ROLLER SUPPORT, CHANGE BELT
B
REPOSITION ROLLER AT CUTTERBAR
D
C E
REPOSITION ROLLER AT CUTTERBAR
E C D
INSTALL DRAPER TRACK EXTENSIONS
B
A