9960 Self-Propelled Peanut Combine Performance
MAN091 06/03/05 125
Dual Speed Picking Cylinder Drive
The dual speed picking cylinder drives allow
variance of picking cylinder speed beyond
what is available using the 10% speed
reduction control. The low speed setting can
offer superior performance in very dry or brittle
conditions. This setting causes less shelling
and reduces the amount the hay is torn.
Starting Position: Always start with the dual
speed drives in the fastest position. Do not
change over to the low speed setting until you
have tried the 10% speed reduction and have
backed off all of the breast springs and the
picking control board. The fastest position is
with the drive chain on the larger jack shaft
sprocket cylinder.
Adjustments: When dry or brittle conditions
require even less aggressive thrashing than
the 10% speed reduction can provide, it is
advisable to stop the machine and switch the
dual speed picking cylinder sprockets to the
low speed setting. Resume operation with the
10% speed reduction disengaged.
The slow speed setting can greatly
increase torque loads on the picking
cylinder assemblies, so it is very impor
never to run the slow speed setting in
green or tough vine conditions, as the
combine may be damaged.
Switching to the low speed picking
cylinder drives requires moving the main
drive chain
from the largest to the smallest
sprocket on the main jack shaft.
Do NOT make this adjustment with the
machine or engine running!
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