Great Plains PT8030 V1012 Operator Manual - Manual (Page 50)

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Section 7 Maintenance and Lubrication
10/10/12 PT6030 and PT8030 Pull-Type Planter 401-032M
Great Plains Mfg., Inc.
3. Install the arm and the shims onto the spindle. Tighten
1/2" bolt to the correct torque value as listed in the
Torque Values Chart in “Section 10 Appendix” on
page
62.
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 con-
tact. If the scraper is worn too much, replace it by re-
moving 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 10 Appendix”
on page
62.
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 main-
tain 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 bush-
ings on idlers. For the correct operation of the planter
check all chain routings. Refer to page 44 for the chain
routing diagrams.