MacDon PW8 - Operating Height; Header Height

215575 90 Revision B
3.12.3 Operating Height
The header and pick-up heights can be adjusted to suit various harvest conditions. Adjustments may depend on whether or
not your combine is equipped with auto header height control (AHHC).
Header Height
Header height is the distance between the deck pivot and the ground.
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Figure 3.143: Operating Height
Operating height (A) should be set between 4 and 5 on the end
plate decal or 305 mm (12 in.) above the ground.
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Figure 3.144: Height Gauge
Header height adjustments are made using the combine’s
header height control. Numbered decals (A) on both sides of
the header indicate the header operating height if the combine
is not equipped with an in-cab header height display.
The position of end plate (B) on the numbered decals (A)
represents the height of the header. Setting the end plate
position between 4 and 5 will achieve the recommended
operating height of 305 mm (12 in.).
NOTE:
Position 1 represents the lowest header height and position 7
represents the highest.
If your combine is factory-equipped with auto header height control (AHHC), refer to the following operating and
adjustment information. If the AHHC system is not functioning properly, the sensor output voltage or header height range
may require adjustment. For more information, refer to 4.1 Auto Header Height Control System Overview, page 103.
1. Ensure that the optimum operating height is 305 mm (12 in.) off the ground under normal conditions with the AHHC
set to the NEUTRAL position.
2. Use the AHHC to change the pick-up operating height to suit your particular harvest conditions. Refer to your combine
operator’s manual for details.
3. If the AHHC sensor requires adjustment, refer to 4.1 Auto Header Height Control System Overview, page 103.
OPERATION