Great Plains 8030P G1021 Operator Manual - Manual (Page 29)

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27 5/15/06 Great Plains Mfg., Inc.
Section 7 Maintenance
60303P and 80303P Three-Point Planter 401-008M
Spreader and Scraper
The spreader and scraper between the disks will period-
ically need replacing. These components scrape dirt off
the disks and protect the seed tube.
To inspect or replace the spreader or scraper do as
follows:
1. Remove the side gauge wheel and the arm from the
row unit.
2. Remove the disk blade. Be careful, disks wear very
sharp!
3. Remove both of the 1/4" bolts holding the scraper
and spreader.
4. If the sides of the seed tube are worn, replace the
scraper and spreader.
5. Install the scraper and spreader with 1/4" bolts.
Torque the bolts to the correct values as listed in the
Torque Values Chart in "Section 9 Specifications"
on page 33.
6. Install the disk and torque the bolt to the correct val-
ue as listed in Torque Values Chart in "Section 9
Specifications" on page 33.
7. Install the gauge wheel according to directions un-
der the Gauge Wheels heading on page 27, below.
Disk
As the disks on the row unit wear, removal of shims may
be required to maintain contact point. To remove disk do
as follows:
!
CAUTION!
Disk blades wear very sharp. Handle with care.
1. Remove side gauge wheels and arm from the row unit.
2. Remove 3/4" bolts retaining the disks.
3. Measure disk diameter, if disk measures 14 1/2" or
less replace disk.
4. If contact is to be increase, move shims from behind
disk to outside disks. This will increase the contact
between the disks.
5. Install disks and tighten 3/4" bolts to torque values in
Specification Section.
6. Install gauge wheels and arms according to direc-
tions in this section.
Gauge Wheels
Periodically check gauge tires to be sure there is contact
or a 1/16" gap between the tires and disks.
For installation or adjustments proceed as follows:
1. Remove the 1/2" bolt holding arm on to the shank.
2. If the tire needs to be closer to the disk, move an ap-
propriate amount of shims from the inside of the arm
to the outside, see Figure 7-2. Each shim is .050
thick.
3. Install the arm and the shims onto the spindle. Tight-
en 1/2" bolt to the correct torque value as listed in
the Torque Values Chart in "Section 9 Specifica-
tions" on page 33.
4. Check clearance or contact of the tire and disk. The
gauge wheel should fall freely when lifted. Repeat
steps 1 through 4 if necessary.
Outside Scrapers
The row units are equipped with outside disk scrapers to
remove dirt from the disks.
Periodically check the scrapers as follows:
1. Remove the gauge tires to inspect the scrapers.
2. Make sure the scrapers are contacting the disk with
some pressure.
3. If scrapers are not contacting the disks properly,
bend and twist the scrapers as required to establish
contact. If the scraper is worn too much, replace it by
removing the two 1/4" bolts. Bolt the new scraper in
place and torque the bolts to correct values as listed
in the Torque Values Chart in "Section 9 Specifica-
tions" on page 33.
Shear Pins
The planter drive line and row units are protected by
shear pins on transmission upper and lower shafts..
Check and replace bent or broken pins as required.
Chain Tension
The planter is equipped with spring loaded idlers to
maintain tension in the chains. As the chains wear and
stretch, the link(s) may be removed to provide proper
chain length and tension. Check and replace broken
springs and bushings on idlers. For the correct operation
of the planter check all chain routings. Refer to page 28
for the chain routing diagrams.
12354
Gauge Arm, Spindle, and Shims
Figure 7-2