Great Plains 3S-3000HDF Operator Manual v1 - Manual (Page 68)

64 3S-3000/F/HD/HDF Table of Contents Index Great Plains Manufacturing, Inc.
195-441M Table of Contents Index 2014-07-01
Grain box not emptying evenly Certain models do not have the same number of seed cups between each divider
of bulkhead. The section with the larger number of cups will empty sooner.
If drill has multiple boxes, check drive sprocket arrangement on each box to see
that they are set the same.
Press wheel or openers plug-
ging Drilling in damp or wet conditions may increase this problem.
Reduce hydraulic down pressure on openers.
Does not back up drill in field, or stop and allow drill to roll backwards with open-
ers in the ground.
Check Seed-Lok Wheel.
Feed cup sprockets locked
up or twisted feed drive shaft Check for foreign matter lodged in one or more feeder cup sprockets.
Liquid insecticide from seed has dried within feed cups. Remove build up by dis-
assembling each feed cup and scrape foreign substance from the turning sur-
faces. NOTE: Liquid insecticide should be applied with caution and care should
be taken to clean the feed system after drilling treated seeds.
Openers drill too deep
(Bulldozing) Reduce hydraulic down pressure on openers
Check press wheel adjustment
Front of openers dropping too
low in hard or minimum till
conditions Set opener frame cross bolt in top hole. See “Opener Height” on page 55.
Opener hydraulic down pressure set too high
Openers raise when tractor
remote hydraulic lever is held
forward and lower when lever
is held rearward Reverse the hydraulic hoses at the tractor quick couplers.
Opener frames do not float
over uneven terrain Tractor remote hydraulic lever not being held in the forward position on the circuit
designed for hydraulic motor control. See “Active Hydraulic Systems” on
page 32.
Pressure gauges read zero
when openers are lowered and
tractor remote hydraulic lever
is held forward. The hoses are routed incorrectly between the pressure control valve and the
opener lift cylinders. See “Opener Lift: Standard Closed-Center” on page 103
or “Opener Lift: Optional Open-Center” on page 104.
Pressure gauges show pres-
sure when the openers are
raised. The hoses are routed incorrectly between pressure control valve and opener lift
cylinders. See “Opener Lift: Standard Closed-Center” on page 103 or “Opener
Lift: Optional Open-Center” on page 104.
Transport lock channels will
not stay in position for trans-
port. Check u-shaped clip in lock channel. Clip must clasp cylinder rod securely. If nec-
essary, tighten or loosen clip by turning the bolt on the clip.
Before transporting, check that the hydraulic cylinders have settled against the
lock channels. The weight of the cylinders help hold the lock channels in place.
Hydraulic marker functioning
improperly
(Optional equipment) Check all hose fittings and connections for air and oil leaks.
Check tractor hydraulic oil level.
Check all bolts and fasteners.
If needle valve is plugged; open valve, cycle markers, and reset the needle valve.
Problem Solution