Operator Manual Manual

72 PD8070 Table of Contents Index Great Plains Manufacturing, Inc.
401-479M Table of Contents Index 2014-07-23
Meter Maintenance
Finger Meter Maintenance
Finger Set Inspection
Finger sets should be inspected on an annual basis.
After cleaning, carefully inspect the fingers and springs
for wear or other abnormalities that may develop.
Excessive wear may disrupt singulation performance.
Great Plains recommends having the meter service
performed by a recognized professional repair facility,
such as a certified MeterMax
®a
representative. If you
choose to service them yourself, follow these procedures
when installing the finger sets.
See page 18 for meter removal.
Agricultural Chemical Hazard:
Follow material supplier recommendations carefully. Handle
the meter as if it were treated seed. use supplier-recommended
cleaning agents. Any seed treatment build-up inside a meter is
likely to be at a higher concentration than on the actual seed.
Finger Meter Re-Assembly Steps
Refer to Figure 82
1. Be sure the belt is oriented as shown in Figure 82.
2. Slide the finger set over the shaft and rotate
clockwise until it sits against the backing plate .
3. One click will sound when ashtray engages the roll
pin and a second click will sound when the cam
engages the bearing housing.
4. Firmly press the finger set against the backing
plate while tightening the nut .
5. Tighten the nut until contact is made between the
nut and the finger set . Turn
1
⁄
4
to
1
⁄
2
flat
(
1
⁄
24
to
1
⁄
12
of a turn) (a flat is one of the six sides of
the nut) after contact is made. This equals about
0.45 N-m (4 inch-pounds) of torque on the nut.
6. Place the slotted nut cover on and carefully align
the slotted nut cover with the shaft hole. Insert the
cotter pin .
7. Rotate the finger set clockwise and make sure the
fingers open and close properly. Rotate the meter
and make sure the meter turns freely and that there
is no air gap between the outer rim of the ashtray
and the backing plate. Fingers should be closed at
the 8:00 to 2:00 position (exit hole) and open at the
2:00 to 8:00 position.
Precautions
Visually check that there is no visible air gap between the
ashtray and backing plate.
Make sure the finger set is properly torqued against the
backing plate. Improperly torqued finger sets may disrupt
seed singulation.
a. MeterMax
®
is a registered trademark of Precision Planting, Inc.
Figure 82
Finger Meter Assembly
22507
1
2
4
5
6
7
3
1
2 3
4
2
4 5
5
2
6
7