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472H Potato Harvester Owner Operator’s Manual
Hydraulic adjustable manual shakers:
Hydraulic adjustable manual shakers (See Fig. #50) imple-
ment a 3 or 4 prong shaker attachment connected to a hy-
draulic cylinder.
Manual Shaker Adjustment:
When the operator moves the switch on the control box, the
hydraulic cylinder extends or retracts and an eccentric raises
or lowers the shakers for more or less shake. This type of
shaker bounces the potato and will cause damage to the
potato if the operator does not use caution.
Oscillating shakers:
Oscillating shakers (See Fig. #51) are a more bruise-free
method of separating dirt from potatoes. With the oscillat-
ing shakers a hydraulic motor rocks a shaft with rollers on
it. This produces a frequency that is used to break up the
soil while not bouncing the potatoes. Run the shaker only
as fast as necessary, as damage to the potatoes will occur
with excess speed.
3.19.3 SHAKERS
The harvester can use shakers in the digger section. The
crop should lose eighty percent of the dirt in the digger sec-
tion. The following types of shakers are available.
Figure # 51 Oscillating Shaker
Oscillating Shaker Adjustment:
The oscillating shaker is controlled by a wide variety of ad-
justments. The main adjustment is the speed of the hydrau-
lic motor. You can equip the harvester with an optional hy-
draulic flow control to change the speed of the shakers with
the control box.
If the harvester is not equipped with an optional speed con-
trol, the shaker may operate from the remote valve of the
tractor. The flow control in the tractor adjusts the shaker
speed. More oil flow to the shaker motor provides a higher
frequency of agitation, while less oil flow provides lower fre-
quency for more aggressive agitation.
Also, the shaker can be adjusted by changing the stroke of
the shaker (See Fig. #52). This is adjusted by placing the
shaker in the various stroke adjustment holes.
Adjust the shaker to run parallel with the primary belted
chain using the centering adjustment (See Fig. # 52), other-
wise the shaker will not be used to maximum efficiency.
Figure # 52 Shaker adjustment
Figure # 50 Manual Hydraulic Shaker
3.19 OPTIONS (CONT’D)
