Header Flotation - MacDon A30-S Operator's Manual

6.17.9 Header Flotation

Header flotation springs are normally set so
70 lbf (311 N) is required to lift either end of the
header just off the ground. In rough or stony
conditions, it may be desirable to change setting
to 35 - 50 lbf (156 - 222 N) to protect cutting
components.
When float setting is light, it may be
necessary to use a slower ground speed
to avoid excessive
leaving a ragged cut.
6.17.9.1 Flotation Adjustment: Self-Propelled
Header float can be hydraulically adjusted from
the cab, without shutting down the windrower.
To adjust float, refer to your Self-Propelled
Windrower Operator's Manual.
6.17.9.2 Flotation Adjustment: Pull-Type
IMPORTANT
Float setting (or lifting force) must be
equal on both ends of the header. LH
and right ends require different spring
lengths to achieve equal float at both
ends.
IMPORTANT
Because header
outside tire whenever header is swung
from one side to the other, tires must be
fully inflated (30 psi (207 kPa)) to minimize
effects on header float.
CAUTION
To prevent accidental
windrower, place all controls in NEUTRAL or
in PARK, engage park brake (if applicable),
shut off engine, and remove key.
a. Position header directly behind tractor, and raise
header fully.
b. Stop engine, remove key and engage lift
cylinder lockouts.
Form 169000 / 169040
SECTION 6 OPERATION
NOTE
bouncing, and
weight transfers
movement
c. Back jam-nuts (A) "away" from spring.
d. To increase flotation, turn adjuster bolts (B)
clockwise (further into spring).
To decrease flotation, turn adjuster bolts (B)
counter clockwise.
Springs must be adjusted in pairs.
e. Tighten jam-nuts (A) against spring inserts to
secure the setting.
f. Lower header, and check header flotation at
each end.
Other operating variable adjustments
may affect float setting. Check the float,
to
and
adjusting reel position, cutting height, or
header angle.
Also, if using a tractor with drawbar
height different than 16 in. (406 mm)
flotation will be affected. Adjust as
required.
of
84
B
A
NOTE
NOTE
re-adjust if necessary after
Revision D