MacDon 3020 Pull-Type Windrower - Manual (Page 37)

26
OPERATION
DELIVERY OPENING HEIGHT
Height of the frame tube can be adjusted within a
6” (150 mm) range by repositioning the caster
wheel spindle on the supports. A lower frame tube
height gives a flatter draper/guard angle, while
higher frame tube heights are beneficial in bulky
crops.
Adjust delivery opening height as follows:
1. Place jack at left or right end as shown.
2. Remove four bolts and reposition spindle on
caster as desired. NOTE: Spindle hangs on
caster on a welded stud, so weight of wheel
does not need to be supported as adjustment is
made. Tighten bolts to 80 ft.lbs. (110 N
⋅m).
NOTE: Factory assembly of casters is in a lower
clearance position, with rounded end of bracket up
as at (A). For highest settings, turn spindle bracket
180°, so rounded end is down as at (B).
3. Repeat at other end. See Levelling the
Cutterbar, below.
Levelling the Cutterbar
In field position, the right end of the cutterbar
should be 1 to 3 inches (25 to 75 mm) higher than
the left end to accommodate the weight of the
grain on the drapers when windrowing.
LEFT WHEEL JACK POSITION – WHEEL
SHOWN IN RAISED POSITION
RIGHT WHEEL JACK POSITION
L/H SPINDLE BRACKET – FACTORY SETTING
A
B
BLOCK HEIGHTS:
L/H side – A 6” (150 mm) block (four 2x4’s) is
required under jack to raise to highest setting.
NOTE: When going from highest to lowest
position, a 6” block under jack is too high to
reach lowest position. Move in stages as
follows:
• Use a 6” block to move from high to
mid position.
• Lower onto wheel and remove one 2x4
to leave a 4-1/2” block.
• Jack up again and move from mid to
low setting.
R/H side – A 4-1/2” (115 mm) block (three
2x4’s) is adequate for all adjustments.