Great Plains 2SF30 Operator Manual User Manual
Page 57
Great Plains Manufacturing, Inc.
Adjustments
53
2014-01-09
155-015M-A
Press Wheel or
Openers Plugging
Drilling in damp or wet conditions may increase this problem.
Openers may be moved from a staggered to an in-line position to reduce trash thrown from
front openers into rear openers.
Reduce down pressure on openers.
Do not back up drill in the field, or stop and allow drill to roll backwards with openers in the
ground.
If using double “V” press wheels, adjust angle bar.
Check Seed-Lok
®
wheel.
Rubber Tire Depth
Control Wheels
Becoming Packed
With Mud
Install scrapers.
Reduce spring tension on openers.
Improper Folding of
Drills
Adjust post frame adjusting links.
Check hydraulic system for air and oil leaks.
Clean out small orifice fittings in wing cylinders.
Make sure that the wing boxes unfold to a straight line. check to see that both pull bars are
attached to the boxes at exactly the same distance inboard from the inboard edge of the drill
box (90”) and both are exactly the same length.
Hydraulic Adaptors
Cracking
JIC fittings do not require high torque.
ALWAYS use liquid pipe sealant when adding or replacing pipe thread hydraulic fittings.
Plastic sealant tape can crack fittings and plug hydraulic lines. JIC and O-Ring fittings DO
NOT require sealant. O-ring fittings require a thin coat of oil on the O-Ring.
IMPORTANT: When using sealant on pipe threads, the friction between the threads is
reduced, therefore, be certain not to overtighten causing damage to the cylinders, valves or
fittings.
Seed Cup Sprockets
Locked up or
Twisted Seed-Drive
Shaft
Check for foreign matter lodged in one or more seed cup sprockets.
Liquid insecticide from seed has dried within the seed cup. Remove the build up by
disassembling each seed cup and scrape the foreign substance from the turning surfaces.
NOTE: Liquid inoculant should be applied with caution and care should be taken to clean the
seeding system after drilling treated seeds.
Raising and Lowering
Drill is Rough and
Uneven
Lubricate lower rollers of vertical transport tubes located between the transport tires.
Check hydraulic fittings for leaks.
Rephasing cylinders not properly bled. See “Hydraulic Hose Hookup” on page 16. When
raising drill at end of field, the lifting cylinders should be fully extended to ensure that they
are always rephased. If machine is only raised enough to lift openers out of the ground, lift
cylinders may eventually get out of sequence and cause uneven seeding depth.
General Troubleshooting
Problem
Solution