Great Plains NTA3007HD Operator Manual - Manual (Page 107)

Troubleshooting 103
04/04/2011 166-207M
Brake Troubleshooting (Option)
Openers drill too deep
(Bulldozing) Too much hydraulic down pressure on open-
ers. Reduce hydraulic down pressure on open-
ers.
Incorrect press wheel adjustment. Readjust press wheel, page 98.
Front of openers drop-
ping too low in hard or
minimum-till condi-
tions Incorrect opener frame setting. Remove shims, page 90.
Too much hydraulic down pressure on open-
ers. Reduce hydraulic down pressure on open-
ers.
Opener frames do not
float over uneven ter-
rain Hydraulic lever not locked forward. Lock hydraulic lever forward.
Openers not connected to circuit designed
for hydraulic motor control. Refer to page 19.
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 157.
Pressure gauges show
pressure when open-
ers are raised Hydraulic hoses not routed correctly
between pressure control valves and opener
lift cylinders. See hose routing diagrams beginning on
page 157.
Hydraulic marker func-
tioning improperly Air or oil leaks in hose fittings or connec-
tions. 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.
Chain length incorrect
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.
Disk orientation not ideal for conditions Reverse marker disk to pull or throw dirt.
Chain Skipping or
Excess Wear Debris/no retainer clip Be sure retainer clip is facing in opposite
direction of chain travel (page 107).
Excess slack Adjust chain slack (page 107)
Sprockets not aligned Adjust sprockets on shafts.
Problem Causes Solutions
Smoke or odd burning
odor from axle area Overheated brakes, typically on long steep
hills Stop immediately. Wait for brakes to cool
completely. Moderate downhill speed by
using lower gear and frequent full stops.
Check brake components for heat distortion.
New brakes may exhibit slight smoking or
odors until linings seat on drums. Check brakes if problem persists, or braking
action is insufficient.
Problem Causes Solutions