Great Plains 2SNG30 Operator Manual - Manual (Page 36)

2SNG24 & 2SNG30
202-499m 8/17/2006
34
Problem Solution
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 "Bleeding Hydrau-
lics," page 19. When raising drill at end of field, the lifting cylin-
ders 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.
Hydraulic marker functioning improp-
erly Check all hose fittings and connections for air and oil leaks.
The chain on the folding 3-section marker should be slack when
the marker is both fully extended and fully raised.
Check tractor hydraulic oil level.
Check all bolts and fasteners.
Double selector valve positioned for wing fold. Shift valve to
marker sequence position.
Open needle valve, cycle markers slowly and reset needle valve
if plugged.
Chain-debris/retainer clip Be sure retainer clip open end is facing opposite way of chain
travel.