Great Plains 3S-4000HDF Operator Manual - Manual (Page 76)

72 3S-4000HD/HDF Table of Contents Index Great Plains Manufacturing, Inc.
195-067M Table of Contents Index 2013-06-13
Openers raise when tractor
hydraulic lever is held forward
and lower when lever is held
back
Reverse hydraulic hoses at tractor
quick couplers.
Opener frames do not float over
uneven terrain
Hydraulic lever not locked forward. Lock hydraulic lever forward.
Openers not connected to circuit
designed for hydraulic motor control. Refer to page 34.
Pressure gauges read zero when
openers are lowered and
tractor hydraulic lever is held
forward
Hydraulic hoses not routed correctly
between pressure control valves and
opener lift cylinders. See hose routing diagrams beginning
on page 105.
Pressure gauges show pressure
when openers are raised
Hydraulic hoses not routed correctly
between pressure control valves and
opener lift cylinders. See hose routing diagrams beginning
on page 105.
Transport lock channels will not
stay in position for transport
U-shaped clip in lock channel not
clasping cylinder rod securely. Tighten or loosen clip by turning bolt
on clip. Replace clip if necessary.
Hydraulic cylinders have not settled
against lock channels before
transporting. Make sure hydraulic cylinders have
settled against lock channels before
transporting. The weight of the
cylinders help hold lock channels in
place.
Hydraulic marker functioning
improperly
Air or oil leaks in hose fittings or
connections. Check all hose fittings and connections
for air or oil leaks.
Low tractor hydraulic oil level. Check tractor hydraulic oil level.
Loose or missing bolts or fasteners. Check all bolts and fasteners.
Needle valve plugged. Open needle valve, cycle markers
slowly and reset needle valve, refer to
page 68.
Marker disk does not mark Marker folding linkage does not have
enough slack to allow marker disk to
drop into field depressions. Maximum down float should be limited
by the slot at the rod end of marker
cylinder.
Reverse marker disk to pull or throw
dirt.
Chain Debris/no retainer clip Be sure retainer clip is facing opposite
way of chain travel
Problem Cause Solution