Great Plains 2N-3020 Operator Manual - Manual (Page 39)

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Section 5 Maintenance and Lubrication
2/28/08 2N-2420 and 2N-3020 Two-Section Folding No-Till Drill 196-164M-A
Great Plains Mfg., Inc.
Drive-Train Roller Chain
Type of Lubrication: Chain Lube
10
As
Required
Seed-Cup-Drive Sprocket
Oil sprocket hub in its square bore. Squirt oil on the
square seed-cup shaft and move seed-rate handle back
and forth to get oil back into the square.
Type of Lubrication: Oil 12126
12167
Speed-Change Box
The speed-change gearbox is lubricated and sealed at
the factory. Under normal conditions, it does not require
maintenance or lubrication.
If you open the gearbox for repair, repack all gears and
around the shaft bearings with least 7 ounces of lithium-
based, wheel-bearing grease.
It is important to keep moisture and dirt out of the gear-
box. Inspect the rubber seals on the gearbox drive and
shifter shafts. Replace seals if necessary.
Before bolting them back together, spread a very thin
coat of anaerobic sealant (such as Loctite 525) on the
gearcase-mating surfaces.
IMPORTANT: Use sealant sparingly! Excess sealant
may squeeze off surface and lock bearings or gears.
12227