MacDon FD70 for Combine Operators - Manual (Page 114)

SECTION 9. OPERATION
Form 169006
112
Revision D
9.14 HEADER LEVELLING
The adapter is factory-set to provide the proper
level for the header, and should not normally
require adjustment.
If the header is not level, perform the following
checks prior to adjusting the leveling linkages.
IMPORTANT
The adapter float springs are not used
to level the header.
 Check combine tire pressures.
 Check that the combine feeder house is
level. Refer to your Combine Operator’s
Manual.
 Check that top of adapter is level with
combine axle.
Make fine adjustments to header leveling as
follows:
a. Park combine on level ground.
b. Check float lock is disengaged (so header can
float).
c. Check and set float adjustment. Refer to Section
9.11.3 Header Float.
d. Set header approximately 6 inches (150 mm) off
ground, and check that float linkage is against
down stops. Note high and low end of header.
e. Adjust level with nut (A) at each float lock as
follows. Use small adjustments (1/4 -1/2 turn),
and adjust each side equally but in opposite
directions:
NOTE
Set screw (B) does not require
loosening for adjustments up to ½ turn
of nut (A).
1. Turn low-side nut clockwise to raise header.
2. Turn high-side nut counter clockwise to
lower header.
NOTE
Adjustment of more than two turns in
either direction may adversely affect
header float.
Always be sure there is a minimum
0.12 inch (2 to 3 mm) clearance
between frame and back of bellcrank
lever as shown.
NOTE
Float does not require adjustment after
levelling header.
A
B
0.12 in (2 - 3 mm) MIN.