Landoll 7822 Series, Operator'S Manual

Page: 30 / 34

5-2 F-1045-0819
TROUBLESHOOTING
TABLE OF CONTENTS
Floor cut has grooves.
Rear gangs out of adjustment
relative to the front disc unit.
Adjust rear gang to the right slightly
less than the average width of the
groove bottoms.
Machine bounces in the field. Field conditions too rough for
operating speed.
Reduce operating speed. Work
twice if necessary.
Floor cut irregular.
Adjust rear gangs laterally.
Wing down pressure is not
operating.
Confirm wing down pressure.
Air is trapped in the gauge cylinders.
Remove air from the cylinders by
holding hydraulic circuit in extend
position for 5 to 10 seconds after full
extension.
Excessive down pressure on rear
reels/rollers.
• Decrease rear real down
pressure on left-hand wing.
• Turn adjustment crank
counter-clockwise.
Uneven operating depth.
Wing frame(s) not operating at
uniform depths.
See “Synchronizing and Leveling
Front Gauge Points” on page 4-3 .
Rear gauge points out of
synchronization.
Synchronize cylinders by holding
hydraulic circuit in extended position
for 5 to 10 seconds after full
extension.
Hydraulic wing down pressure is not
operating (correctly).
Make certain that the indicator
gauge is showing the recommended
pressure and the flow is not
excessive.
Hydraulic wing down pressure is too
high and center section is too light.
Reduce wing down pressure.
Hydraulic wing down pressure is too
low and the wing tips are too light.
Increase wing down pressure.
Rear gauge points not uniform. Rear gauge points out of
synchronization.
Synchronize cylinders by holding
hydraulic circuit in extended position
for 5 to 10 seconds after full
extension.
Cylinder leaking internally.
Repair/replace cylinder.
Machine does not hold
consistent working depth. Rear finishing feature single point
limit valve leaking.
Replace rear limit valve (on
left-hand wing frame).
Front gauge point limit valve
leaking.
Replace front limit valve (on hitch).
Front and/or rear gauge points out
of synchronization.
Synchronize cylinders by holding
hydraulic circuit in extended position
for 5 to 10 seconds after full
extension.
Wings fold too slowly. Restrictors are not properly
installed.
Smart restrictor fittings should be
installed in wing cylinder base end
points.
Problem Cause Solution(s)