MacDon FD70 for Combine Operators - Manual (Page 93)

SECTION 9. OPERATION
Form 169006
91
Revision D
9.11.2.2 Cutting On The Ground
Cutting on the ground is controlled with a
combination of skid shoes, header angle, and
float adjustment, and not with the header lift
cylinders.
Having the header "ride" on the skid shoes allows
the float linkage to float the header over obstacles
and follow ground contours, rather than
supporting the header with the cylinders.
Lowering the skid shoes or decreasing the
header angle increases the cutting height. This
may be desirable in stony conditions, to reduce
damage to cutting components. Also, a longer
stubble length helps material dry faster.
Raising the skid shoes and increasing the header
angle allows the crop to be “shaved”.
Set up the header as follows:
a. Fully raise the stabilizer wheels, or slow speed
transport wheels if installed. Refer to previous
section.
DANGER
To avoid bodily injury or death from
unexpected start-up or fall of raised machine,
stop engine, remove key, and engage lift
cylinder stops before going under machine to
adjust skid shoes or for any reason.
b. Fully raise header, engage lift cylinder stops, shut
off engine and remove key.
c. Adjust skid shoes to achieve desired cutting
height as follows:
Outer Skid Shoes
1. Remove lynch pin (A) at each skid shoe (B).
2. Hold shoe, and remove pin (C) by
disengaging frame, and then pulling away
from shoe.
3. Raise or lower skid shoe to desired position
using holes in support as a guide.
4. Re-install pin (C), engage in frame, and
secure with lynch pin (A).
Inner Skid Shoes
1. Remove lynch pin (D).
2. Hold shoe (E), and remove pin (F) by pulling
down to disengage frame, and then pulling
away from shoe.
3. Raise or lower skid shoe (E) to desired
position using holes in support (G) as a
guide.
4. Re-insert pin (F), engage in frame, and
secure with lynch pin (D).
d. Check that skid shoes are adjusted to the same
position.
e. Adjust header angle to desired working position
using the machine’s header angle controls. If
angle is not critical, set it to “mid-position”.
f. Check header float as described in the following
Section 9.11.3 Header Float.
D
F
B
C
A
E
D
F
G