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3P3025AH
Maintenance
Great Plains
| 411-332M | 2019-02-19
95
Meter Drive Chain
Refer to Figure 118 (which depicts planter raised)
When performing periodic lubrication, check chain
condition. Replace chain if any frozen kinks are not
corrected by lubrication.
When performing seasonal checks, lower planter to put
chain at minimum idler spring tension.
Check the idler spring length
, measured from outside
of pin to outside of pin. Idler spring must not be shorter
than 7.0 inch (17.8 cm).
Lift spring off idler assembly
. Check that idler
assembly pivots freely. Attach the spring.
Check chain clip orientation. Check chain routing at
shank idler(s)
.
Spreaders and Scrapers
Applies to all row4 unit Series.
1. Remove side gauge wheels from arms to access
row-unit discs and scrapers.
2. With the unit raised, check blade spreader
for
wear. Replace spreader if it is
1
/
2
inch (13 mm) wide
or narrower. To replace, remove disc blades
, drive
out roll pins
, and install new spreader.
3. When reinstalling disc blades, put two shims
between bearing and shank on each blade. Tighten
bolts.
4. Check amount of contact between blades, and
adjust number of shims as needed. Store extra
shims on outside of blade. See “
5. Check that outside disc scrapers
are formed to
disc blades to help remove any mud. Bend/twist
scrapers to fit blades as needed. Every 200 acres of
operation, check outside scrapers for adjustment
and wear. Replace outside scrapers as necessary.
Figure 118
25AP Meter Drive Chain
31032
5
4
3
You may need fewer washers under worn discs.
Figure 119: 25AP
Spreaders and Scrapers
22839
It is normal for the blade spreader to have some
looseness in the holder and between the blades.
Some looseness is required for proper operation.
1
3
2
4
5