OPERATION
Adjusting the Header Raise/Lower Rate (Gleaner R65/R75)
NOTE:
Changes may have been made to the combine controls or display since this document was published. Refer to
the combine operator’s manual for updates.
TheAutoHead
er H eig h t Control (AHHC) s ystem’s stability
is affected b
y hy dra ulic flow rates. Ensure that the header
raise (A) and
header lower (B) adjustable restrictors in the
hydraulic va
lve block are adjusted so it takes approximately
six seconds
to raise the header from ground level to
maximum hei
ght (hydraulic cylinders fully extended),
and approxi
mately six seconds to lower the header from
maximum hei
ght to ground level.
NOTE:
Make this adjustment with the hydraulic system at normal
operating temperature (130°F [54.4°C]) and the engine
running at full throttle.
Figure 3.161: Header Raise and Lower
Adjustable Restrictors
Adjusting Ground Pressure (Gleaner R65/R75)
NOTE:
Chang
es may have been made to the combine controls or display since this document w as published. Refer to
the co
mbine operator’s manual for updates.
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Revision A
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