Section 8: Troubleshooting
DH3510 & DH3512 Disc Harrow 322-251M
12/7/18
36
DH35 Series Troubleshooting Chart
Problem
Cause
Solution
Disc Harrow makes a high
center ridge.
Disc blades are moving too much soil to
the center.
Tilt Disc Harrow up at the rear by turning
spring adjuster counterclockwise. See
“Front to Rear Leveling” on page 22.
Set tractor draw bar in its lowest possible
position by flipping the offset drawbar over.
Decrease tractor speed.
Increase spacing between disc gangs by
moving all gang hangers on both sides
away from the center equal amounts.
Disc Harrow cuts a furrow
(valley) in the center.
Disc blades are not moving enough soil to
the center.
Tilt Disc Harrow down at the rear by
turning spring adjuster clockwise.
Set tractor draw bar in its highest possible
position. This can be done by flipping an
offset drawbar over.
Increase tractor speed.
Reduce spacing between rear disc gangs
by moving all gang hangers on both sides
toward the center by equal amounts.
Disc Harrow makes ridges on
the out side cuts and furrows
just inside the ridges.
Too much soil is thrown out by the front
disc gangs.
Check front to rear disc leveling. Raise
front disc gangs with spring adjuster by
turning it 2 or 3 revolutions clockwise.
Reduce front disc gang angle by one
position.
Set tractor draw bar in its lowest possible
position by flipping the offset drawbar over.
Add disc furrow fillers to the rear disc
gangs. See “Furrow Filler Assembly” on
page 20.
Disc Harrow makes a furrow on
the out side cuts and a ridge
just inside the furrow.
Rear disc gangs are set too wide and picks
up soil beyond where the front gangs throw
it out.
Reduce spacing between rear disc gangs
by moving all rear gang hangers in toward
the center equal amounts.
Raise front disc gangs by turning spring
adjuster clockwise.
Furrow fillers on the end of the rear disc
gangs may be too large.
Disc Harrow does not pull
straight and/or shifts from side
to side.
Front disc gangs run deeper than the rear
disc gangs.
Tilt Disc Harrow down at the rear by
turning spring adjuster clockwise.
Disc gangs are not centered on the frame.
Center disc gangs on the Disc Harrow.
Front disc gangs not at the same angle.
Set Front disc gangs at the same angle.
Rear disc gangs not at the same angle.
Set Rear disc gangs at the same angle.
Spring compressed length not set to the
correct length.
Set spring compressed length to 12 1/2".
Disc Harrow leaves a
depression in the worked soil
behind tractor wheels
Tire slippage, heavy tractor, soft soil
conditions.
Add duals, increase tractor speed,
increase gang angle and/or increase
cutting depth.
Tilt Disc Harrow down at the rear by
turning spring adjuster clockwise.
Section 8: Troubleshooting
