Art's-Way Manufacturing 6812A, Operator'S Manual

Page: 39 / 64

HARVESTER ADJUSTMENTS 37
T
RUCK
C
ONVEYOR
Figure 74 - Truck Boom Conveyor
The draper chain tension is maintained by the weight of
the large bag area in the center. An additional position is
provided if needed. The roller chain drive to the
hydraulic motor is maintained by loosening the mounting
plate using the take-up bolt and re-tightening.
The speed of the truck conveyor may appear to be slow.
Speeding it up will normally take the beets at a lower
depth and not really speed the unloading. Adjust the
speed so when starting to unload a full tank, the beets
do not over flow the grates. This should still allow the
tank to unload in less than one minute.
H
YDRAULIC
S
YSTEM
Refer to Figure 76 for self-contained hydraulic system
and Figure 77 for the tractor/harvester hydraulic system.
Both of these figures will show specific routings and
components.
Tractor/Harvester Hydraulic System
The five hydraulic circuits are noted as follows:
A) Truck Conveyor Drive Motor And Transfer
Conveyor Lateral Movement
1) Connect to the No. 2 priority valve, if applicable.
2) The circuit has a check valve installed to allow
for operation in only the proper direction.
3) Set the speed with the tractor flow control.
4) The cylinder for lateral movement of the transfer
conveyor is also tee’d into this circuit. When the
truck conveyor motor is turned off, the reverse
direction moves the transfer conveyor left as the
operator chooses. When the truck conveyor is
started the transfer conveyor moves back right
at a speed controlled by the needle valve.
B) Main Machine Lift Cylinder
1) Connect to the No. 2 priority valve, if applicable.
2) The lift cylinders are equipped with an adjustable
nut. Add segments on the cylinder rod to control
the depth of the machine.
3) This will most likely work best at a mid-range
flow.
C) Rowfinder Operation (Valve and Cylinder)
1) If a power beyond circuit is used, it should be
connected to this function. Check with dealer for
proper connection.
2) This circuit normally requires 5 to 7 gpm to
operate. The circuit has an orifice restrictor to
control this flow if connected to the power
beyond circuit.
3) If this circuit is connected to a regular outlet the
flow should be reduced to the minimum needed.
It may be desirable to remove the restrictor.
D) Rowfinder Over-ride to Cylinder
1) Reduce flow to a comfortable speed for you.
2) A restrictor also in this circuit.
E) Operates the Cylinders for the two cylinders that
raise and lower the truck elevator. The lock valves
mounted on the cylinders prevent the truck elevator
from falling, if a hose should break.
CAUTION: NEVER REMOVE THE LOCK
VALVES.
Harvester Self-Contained Hydraulic
System
The self-contained hydraulic system consists of the
following main components.
A) The hydraulic reservoir holds approximately 50
gallons of 10W/30 hydraulic oil. Use the same type
of hydraulic oil as your tractor’s hydraulic system.
Make sure a visible oil level appears in the hydraulic
reservoir level gauge.
1) Strainer in fill neck
2) Strainer in the lower suction line, along with a
shut-off valve. Never shut-off this valve
unless required.
3) Filter in the return line.
Figure 75 - Harvester Pump Drive
2) Dual hydraulic pump providing approximately 16
gpm to each circuit.