KUHN HR303D, Operator'S Manual

Page: 89 / 96

Trouble shooting guide
Power harrows
HR303D/M
87
$ TROUBLE SHOOTING GUIDE
-
Problem Cause Remedy
Noisy drive when lifting the
machine
Top link of 3-point hitch badly
positioned/adjusted
Position top link parallel to
lower linkage arms
Excessive lifting height Limit the lift linkage stroke
Noisy drive during work
Machine tilted to the front or
rear (excessive pitch angle)
Lengthen or shorten top link to
set the machine horizontally
during work. (Tractor pto shaft
end and machine input shaft
must be parallel)
Insufficient machine side to
side stabilization
Use lower linkage arm
stabilizers
Excessive power requirement
Working depth too deep
Reduce working depth by
means of the roller
Rotor speed too high
Reduce speed by changing
gearwheels in the gearbox.
(optional gearwheel sets)
Excessive ground speed Reduce ground speed
Incorrect setting of the rear
levelling bar
Raise or remove the levelling
bar
Tilth produced is too coarse
Considerable build-up of long
plant residues around the
blades Eliminate plant residues
Excessive ground speed Reduce ground speed
Rotor speed too low
Increase speed by changing
gearwheels in the gearbox.
(optional gearwheel sets)
No levelling bar
Install levelling bar, preferably
to the rear
Tilth produced is too fine
Rotor speed too high
Reduce speed by changing
gearwheels in the gearbox.
(optional gearwheel sets)
Forward speed is too slow Increase forward speed
Rear levelling bar is too low
Raise or remove the levelling
bar
Ridging at the side of the
machine
Anti-ridging plate incorrectly
positioned on the side
deflectors
Position each anti-ridging plate
as close as possible to the
ground and roller
Excessive wear on blades and
blade holders
PTO speed is too high Reduce PTO speed
Levelling bar mounted at the
rear
Remove rear levelling bar if not
required by working conditions