HEADER OPERATION - A SERIES
Form 169552 / 169554 / 169555
106
Revision A
6.6.5 KNIFE SPEED
The ideal cutting speed of the knife should be
such that a clean cut is achieved. Crop types
and conditions usually influence the knife and
forward speeds.
The knife speed is manually set by making
adjustments to the knife drive pump, and has
been pre-set at the factory.
For optimum performance, adjust the knife
speed according to the header being used. See
the following table.
If the machine is equipped with the appropriate
sensor and optional module, the CDM will notify
the Operator when the knife speed reaches an
overload pre-set (usually 75% of knife speed).
The pre-set can be changed on the CDM. Refer
to Section 5.18.5
Cab Display Module (CDM)
Programming
NOTE
The knife speed should stay within the
range specified for each header.
HEADER
DESCRIPTION
KNIFE SPEED
TYPE
SIZE
MINIMUM
MAXIMUM
RPM
SPM
RPM
SPM
Auger A40-D
All
700
1400
950
1900
Auger A30-D
775
1550
Auger A30-S
625
1250
775
1550
RPM = speed of wobble box pulley.
SPM = strokes per minute of knife (RPM x 2).
a. Determine the knife speed as follows if the
machine is not equipped with the optional
module:
CAUTION
Check to be sure all bystanders have cleared
the area.
1. Run engine at operating speed with the
header drive engaged, and with ISC off.
2. Check wobble box pulley speed with a
hand-held tachometer.
3. Multiply the rpm reading by two to calculate
the knife speed in strokes per minute.
b. Determine the knife speed as follows if the
machine is equipped with the optional module:
1. Run engine at operating speed with the
header drive engaged, and ISC off.
2. Press SELECTOR button on the GSL until
the CDM displays the knife speed in SPM.
(continued next page)
DISPLAY
DISPLAY SELECTOR
FOR UPPER LINE