MAC215986
210
Revision A
3.10.5
10 Volt Adapter
–
New Holland Combines Only
New Holland combines with a 10 V system require the appropriate 10 V adapter for calibration of the auto header height
control (AHHC) feature.
1034428
A
Figure 3.306: 10 V Adapter (MAC7241)
If a 10 V New Holland combine does not have adapter (A)
installed, the AHHC output will always read 0 V regardless of the
sensor position.
To check sensor voltages, refer to
New Holland CR/CX Series, page 210
or
Manually Checking Voltage Limits, page 205
3.10.6
New Holland Combines
–
CR/CX Series
–
2014 and Prior
To make your header
’
s auto header height control (AHHC) system compatible with New Holland CR/CX Series combines,
you must set your combine
’
s header configuration options for the particular model of header, configure the reel speed
settings, set up the AHHC controls, and calibrate the AHHC system to ensure that it is working correctly.
This section applies only to pre-2015 CR/CX models.
Checking Voltage Range from Combine Cab
–
New Holland CR/CX Series
The auto header height control (AHHC) sensor needs to operate in a specific voltage range in order to work properly.
NOTE:
Changes may have been made to the combine controls or the display since this document was published. Refer to the
combine operator
’
s manual for the most up-to-date information.
NOTE:
For New Holland CR models 6.80, 6.90, 7.90, 8.90, 9.90, and 10.90, refer to
DANGER
Ensure that all bystanders have cleared the area.
1.
Position the header 254
–
356 mm (10
–
14 in.) above the ground.
2.
Unlock the float.