DALBO AXR-H User manual

AXR-H
GB
400/450/500/600 cm
Serial number 1500 –1549

AXR-H

DALBO AXR-H
Type, 400, 450, 500, 600 cm
Congratulations on your new AXR-H disc harrow. To ensure safe operation and to obtain opti-
mal use of the machine, read the rules and instructions of the following operator’s manual
carefully before operating the machine.
©Copyright 1995, DALBO. All rights reserved.
Important safety information is preceded by a


Tighten all nuts, bolts, hydraulic fittings or any other fastened assemblies after a few hours’ use.
Operate the machine only while seated in the driver’s seat of the tractor. Never allow anyone to be in
the immediate vicinity of the operating area of AXR-H.
Never allow children to operate the equipment.
The AXR-H must be secured in the transport position while being towed on public roads.
The driver is responsible for the correct use of lights and markings in compli-
ance with the present Traffic Act and Highway Code of the local traffic legislation.
Your AXR-H has:
Serial number:
Type description:
Month of manufacture:
Net weight (kg):
For prompt service, always quote your machine serial number when making enquiries regard-
ing spare parts or service. A comprehensive index of spare parts can be found in the back of
this manual to give you an overview of AXR-H components and to facilitate ordering.
EC DECLARATION OF CONFORMITY
DALBO A/S
DK-7183 Randbøl
Hereby declare that the above-mentioned machine has been manufactured in compli-
ance with the provision of the Council Directive on the approximation of the laws of the Mem-
ber States relating to Machinery 98/37/EF, which replaces Council Directive 89/392/EØF and
amendments 91/368/EØF, 93/44/EØF and 93/68/EØF with special reference to Annex 1 of
the Directive concerning the Essential Health and Safety Requirements for the design and
the manufacture of Machinery.
DALBO A/S
Date:
Carsten Jensen, CEO

AXR-H
Page 4
Table of Contents
USAGE ...................................................................................................................................................................................................6
ADVANTAGES OF THE AXR-H ............................................................................................................................................................................ 6
SAFETY INSTRUCTIONS..................................................................................................................................................................................... 6
HOOK-UP AND DISMOUNTING ................................................................................................................................................................8
HOOK-UP...................................................................................................................................................................................................... 8
Hydraulics........................................................................................................................................................................................... 8
DISMOUNTING................................................................................................................................................................................................ 8
HANDLING WITHOUT TRACTOR LIFT ARMS ............................................................................................................................................................ 9
Table 2, Total Weight in kg................................................................................................................................................................. 9
ADJUSTMENTS AND SETTINGS ............................................................................................................................................................ 10
DEPTH ADJUSTMENT.....................................................................................................................................................................................10
DISC ANGLING .............................................................................................................................................................................................10
SCRAPERS...................................................................................................................................................................................................11
TRANSPORT SAFETY ......................................................................................................................................................................................11
Transport locks.................................................................................................................................................................................11
DISC GANG LOCKS.........................................................................................................................................................................................12
Hydraulic locks for 6 meter AXR-H .................................................................................................................................................12
Automatic hydraulic lock for the 6 meter AXR-H ..........................................................................................................................13
OUTER HARROWS .........................................................................................................................................................................................13
Mounting ...........................................................................................................................................................................................13
Adjustment .......................................................................................................................................................................................14
OPERATING AND DRIVING INSTRUCTIONS ........................................................................................................................................... 15
FOLDING AND UNFOLDING .............................................................................................................................................................................15
Folding...............................................................................................................................................................................................16
LEVELLING POSITION ....................................................................................................................................................................................16
Ridge along the middle....................................................................................................................................................................17
PENETRATION DEPTH....................................................................................................................................................................................17
TRAVEL SPEED.............................................................................................................................................................................................18
Power Requirements .......................................................................................................................................................................18
TROUBLESHOOTING............................................................................................................................................................................ 19
MAINTENANCE.................................................................................................................................................................................... 20
LUBRICATION...............................................................................................................................................................................................20
SAFETY INSTRUCTIONS...................................................................................................................................................................................21
REPLACEABLE WEARING PARTS......................................................................................................................................................................21
ADJUSTMENTS .............................................................................................................................................................................................21
Adjustment of the castle nuts on the side wing pivots ...............................................................................................................21
Adjusting the castle nut on the packer roller pivot......................................................................................................................22
WHEELS .....................................................................................................................................................................................................22
Dismounting/mounting of wheels..................................................................................................................................................22
Adjustment and lubrication of wheel bearings.............................................................................................................................23
GENERAL INFORMATION ................................................................................................................................................................................23
Cleaning and Inspection..................................................................................................................................................................23
OPTIONS ............................................................................................................................................................................................. 24
HYDRAULIC DEPTH ADJUSTMENT ....................................................................................................................................................................24
Mounting ...........................................................................................................................................................................................24
Operating instructions ....................................................................................................................................................................24
HYDRAULIC ANGLE ADJUSTMENT ....................................................................................................................................................................25
Mounting ...........................................................................................................................................................................................25

AXR-H
Page 5
Operating Instructions.................................................................................................................................................................... 25
Maintenance .................................................................................................................................................................................... 26
ELECTRO-HYDRAULIC OPERATION .................................................................................................................................................................. 26
BEARING PROTECTORS ................................................................................................................................................................................. 27
Mounting .......................................................................................................................................................................................... 27
F-IRON CAGE ROLLER ................................................................................................................................................................................... 27
Mounting .......................................................................................................................................................................................... 27
Adjustment....................................................................................................................................................................................... 28
REPLACEMENTS AND REPAIRS ........................................................................................................................................................... 29
REPLACING DISC BEARINGS .......................................................................................................................................................................... 29
Mounting discs and bearings......................................................................................................................................................... 30
Replacing the bearings in the housings ....................................................................................................................................... 32
REPLACING T-RING PACKER ROLLER BEARINGS ............................................................................................................................................... 33
REPLACING SCRAPERS.................................................................................................................................................................................. 33
Packer Roller Scrapers.................................................................................................................................................................... 33
Disc scrapers ................................................................................................................................................................................... 33
REPLACING DISCS........................................................................................................................................................................................ 34
REPLACING T-RINGS .................................................................................................................................................................................... 34
REPLACING DRAWBAR BUSHINGS................................................................................................................................................................... 34
Mounting .......................................................................................................................................................................................... 34
REPLACING PACKER ROLLER ARM BUSHINGS................................................................................................................................................... 35
REPLACING PACKER ROLLER DEPTH ADJUSTMENT BUSHINGS............................................................................................................................. 35
REPLACING PACKER ROLLER CENTRE PIN ....................................................................................................................................................... 36
DISMOUNTING DISC GANGS ........................................................................................................................................................................... 37
REPLACING F-IRON CAGE ROLLER BEARINGS .................................................................................................................................................... 38
REPLACING HYDRAULIC HOSES...................................................................................................................................................................... 38
REPLACING SIDE WING FOLDING CYLINDERS ................................................................................................................................................... 38
Changing the seals on the side wing folding cylinders .............................................................................................................. 38
Assembly.......................................................................................................................................................................................... 39
REPLACING WHEEL FRAME CYLINDER ............................................................................................................................................................ 40
Changing the seals on the wheel frame cylinder ........................................................................................................................ 40
Assembly.......................................................................................................................................................................................... 41
REPLACING PACKER ROLLER FOLDING CYLINDERS ........................................................................................................................................... 41
Changing the seals on the packer roller cylinder ........................................................................................................................ 41
Assembly.......................................................................................................................................................................................... 42
REPLACING ANGLE ADJUSTMENT CYLINDERS ................................................................................................................................................... 43
Changing the seals on the angle adjustment cylinders............................................................................................................. 43
Assembly.......................................................................................................................................................................................... 44
REPLACING HYDRAULIC LOCK CYLINDERS ON THE DISC GANGS.............................................................................................................................. 44
Changing the seals on the hydraulic lock cylinders ................................................................................................................... 45
Assembly.......................................................................................................................................................................................... 45
REPLACING WHEEL BEARINGS....................................................................................................................................................................... 45
Assembly.......................................................................................................................................................................................... 46
HYDRAULIC DIAGRAM 400/450/500 ................................................................................................................................................. 47
HYDRAULIC DIAGRAM 600.................................................................................................................................................................. 48
SCRAPPING......................................................................................................................................................................................... 49
SPAREPARTS....................................................................................................................................................................................... 50

AXR-H
Page 6
Usage
The AXR-H is a rugged disc harrow that is designed to cut, mix and pulverise plant
stubble and plant residue. The AXR-H performs particularly well when breaking
down large quantities of straw and plant residue, since the implement will never
drag or become plugged with plant material.
The AXR-H is constructed on a heavy-duty main frame onto which the disc gangs
are mounted in an offset X formation. A two-section roller consisting of 60-cm steel
rings and scrapers is suspended from the very back of the tool.
A special feature of the AXR-H is the dual depth control system. Penetration depth
can be controlled both by the lift arms of the tractor and by the packer roller at-
tachment. This special implement design provides smooth and steady fieldwork.
The working depth can be precisely controlled, which results in a field surface that
is even and uniformly packed without any trace of wheel tracks.
The AXR-H is an effective tool for plough-free cultivation, and at the same time it
conditions the soil for an ideal seedbed. A seed drill with a working width of 4 and 5
m can be mounted as an optional accessory.
The AXR-H can also be equipped with optional accessories such as hydraulic depth
adjustment, hydraulic angle adjustment and electro-hydraulic operation.
Advantages of the AXR-H
•Notch-less depth adjustment from 4 to 20 cm.
•No bearing wheels to cause uneven field packing.
•Field is left even, with a uniform blend of soil and plant residue.
•Retains soil moisture.
•Heavy machine weight.
•Changeable parts have a long lifetime.
The AXR-H is particularly well suited to work in the topsoil where the greatest
amount of work on plant residue takes place. Only one pass is needed with the AXR-
H to thoroughly and effectively penetrate the fields and evenly mix plant residue
together with the microorganisms in the soil. To preserve the moisture of the soil
and thereby provide the organisms of the soil with an ideal microclimate, field work
is completed with a packer.
Safety Instructions

The AXR-H must only be used for ordinary field work. The AXR-H must not be used
for clearing forests, breaking up roads or any other similar activity. If you have any
questions regarding the proper operation of the AXR-H, contact your local dealer or
DALBO A/S.

AXR-H
Page 7
The AXR-H must not be used as a crane, a post driver, a hydraulic press or anything
similar.
Operate the tractor and AXR-H only while seated in the driver’s seat.
Never allow anyone to ride on the implement.
A higher level of noise is produced when driving on rocky soil. This level is well un-
der the danger level for the tractor driver.
Driving on extremely dry soil conditions can raise a large amount of dust. It is rec-
ommended that the windows and doors of the tractor be closed or that a dust mask
be used.

AXR-H
Page 8
Hook-up and Dismounting
The linkage of the AXR-H is manufactured in compliance with DS/ISO 730-1 catego-
ry II and III. If the lift of your tractor is not equipped for this, contact your DALBO
representative.
Hook-Up
First mount the lift arms into the ball sockets (A). Elevate the lift and move the
hitch jack up into the transport/working position (B).
Fig. 1
Remember to secure the lift arms and the hitch jack with lynch pins.
Adjust the sway chains tightly until there is no slack in the lift arms.
Hydraulics
There are varying requirements for hydraulic connections depending on the type of
AXR-H model (see ” Options ”). The standard model requires two double-acting ser-
vices: one set for wing folding/unfolding and the other set for the wheel frame.
Table 1, Hydraulic hose markings
Function
Colour
Wheels
Yellow
Folding/Unfolding
Red
Connect the hydraulic hoses to the double-acting ½” sockets located on the lift.
Dismounting
The AXR-H must be secured with the transport locks or it must be unfolded before
dismounting. Remember to relieve the pressure in the connecting hose to the hy-
draulic system before disconnecting it.
Dismount in reverse order to hook-up.
A
B

AXR-H
Page 9
Handling without tractor lift arms
If you need to move the AXR-H other than by use of the three-point hitch, we rec-
ommend lifting it with straps around the middle section, raising the machine so
that it hangs in balance.
Table 2, Total Weight in kg
Type
400 cm
450 cm
500 cm
600 cm
AXR-H
4.320
4.510
4.700
5.500

AXR-H
Page 10
Adjustments and Settings
The AXR-H is preset in the factory, but it will always be necessary to make some fi-
ne adjustments before use. The numerous adjustment possibilities make your AXR-
H more versatile, and allow you to get optimum performance from the implement.
A combination spanner is provided for the adjustment of the spindles and for the
tightening of the castle nuts.
Fig. 2
Depth Adjustment
The working depth can be adjusted on the lift and on the rear T-ring packer roller.
Fig. 3
To increase the working depth, shorten the turnbuckles (A) by turning the turn-
buckle with the supplied combination spanner. To decrease the working depth,
lengthen the turnbuckles. The depth indicators (B) show the depth reading, which
must be equal on both packer roller sections.
Disc Angling
The angle of the discs can be adjusted according to need. As a standard position,
set the front and rear gangs at the same angle.
Adjust the angle of the discs by lengthening or shortening the turnbuckles located
between the main frame and the disc gangs. Remember to tighten the tightening
nut on the turnbuckle.
B
A

AXR-H
Page 11
Fig. 4
Scrapers
Adjust the scrapers by loosening the bolts (A), so that the scrapers can be moved.
Adjust the scrapers so that there is a minimum space of 5 mm between the scrap-
ers and the discs, but make sure that the scrapers never touch the discs.
Fig. 5
The design of the scrapers ensures that they maintain the correct angle in relation
to the discs.
Transport Safety
There is an adjustment bolt (A) located on the transport bar of the wheel frame,
which ensures the correct placement of the transport safety bar.
The square transport safety bar must be adjusted so that there is a space of ap-
proximately 5 mm from the stop (B) on the wheel frame.
Fig. 6
Transport locks
To ensure the correct setting of the transport locks (hooks), a wire tightener has
been mounted on the wire.The wire must be adjusted so the transport locks can be
disengaged, allowing the side wings and the packer roller to be free, but also long
enough that the transport locks can fall down catch and become completely en-
gaged on the side sections and the packer roller.
B
A
A

AXR-H
Page 12
Fig. 7
Disc gang locks
Under extreme circumstances, it may be necessary to lock the disc gangs thus
making the disc gangs completely immovable. This setting is generally not recom-
mended, as it considerably increases the stress exerted on the machine.
Hydraulic for the locks can be mounted.
Fig. 8
Unfold the maschine. Push the
lock (A) on all disc gang so
they are engaged with the
mainframe. Mount the lynch
pins (B).
Remember to disengage the locks before folding up the implement.
Hydraulic locks for 6 meter AXR-H
The disc gangs of the AXR-H 600 are equipped with hydraulic locks as standard.
Fig. 9
The locking system is activated
when folding and unfolding the disc
sections.
After unfolding the side wings, acti-
vate the hydraulic lever controlling
the locks.
It is extremely important to disen-
gage the locks before folding up the
implement.
A
B

AXR-H
Page 13
Automatic hydraulic lock for the 6 meter AXR-H
A fully hydraulic locking system can be mounted on the disc gangs of the AXR-H
600 if the hydraulic requirements exceed the hydraulic outlets of the tractor.
After the side wings are unfolded, hold the hydraulic lever in the same position un-
til the locks are activated.
The locks are released when the hydraulic lever for folding is activated.
Outer Harrows
Mounting the outer harrows limits the amount of soil and plant residue that is cast
out to the side by the outermost discs of the front disc gangs. Outer harrows are
designed to prevent soil and plant residue from being cast out beyond the reach of
the rear discs.
Outer harrows afford you greater freedom with respect to travel speed since soil
and residue are always kept within the reach of the AXR-H regardless of speed.
Fields can easily be left more even through the mounting outer harrows.
Fig. 10
Mounting
Outer harrows are held by two pipes that are mounted into the scraper fittings. The
outer harrows are mounted like a sliding beam attachment.

AXR-H
Page 14
Adjustment
The distance between the outermost disc and the fingers of the outer harrows can
be adjusted with a pin (A), using approximately 30 cm as a standard setting. Re-
member to insert the split cotter pin again.
Fig. 11
Fig. 12
The drawbar can be adjusted verti-
caly. More adjusting can be made
by turning the drawbar upside
down.
A

AXR-H
Page 15
Operating and Driving Instructions
Proper operation is essential to attain the optimum performance from your AXR-H.
Proper operation entails both carrying out tillage operations in the field correctly
as well as following safety precautions.

Every day before operating the AXR-H, inspect all pins, nuts, bolts and connections
to be sure that all are tightened and securely in place.

Keep all bystanders away from the operating radius of the implement when unfold-
ing.

Always be sure the AXR-H is in the proper position for transport when transporting
the implement on public roads.

The AXR-H must be in the fully raised position on both liftarms and wheel frame
when moving in reverseor turning around.

Never load extra weight onto the AXR-H.
The AXR-H is an effective land manager and it is capable of mixing a large quantity
of soil and plant residue. However, in addition to this effective land treatment,
proper driving and equipment settings are required to ensure that the fields will be
left uniformly level and without any ridges. Resulting surface conditions can vary
depending on how you operate the tool.
The outermost disc in the front must run 5-10 cm from the preceding trail in order
to obtain the optimum performance of the machine and to achieve a level field sur-
face.
Folding and Unfolding
Fold and unfold the wings of the AXR-H while the equipment is stationary.
The mechanical transport locks are engaged and disengaged when the side wings
are folded and unfolded between the transport and the working position. Upon arri-
val to the working area, activate the handle for the folding/unfolding of the side
wings. Make sure that the side sections are fully raised. Release the transport lock
by activating the handle to the wheel cylinder so that the cylinder is pressed out to
the fully extended position. The transport locks will be released, and the side wings
together with the packer roller can then be unfolded.
Make sure that the side wings and the packer roller are completely unfolded and
that there is pressure in the cylinders before lowering the disc harrow into/onto the
ground. The locks for the disc gang are used if needed.

AXR-H
Page 16
Folding
Move the wheel cylinders to the fully extended position before folding up the side
sections into the transport position. This ensures that the mechanical transport
lock of the wheel frame is able to fall down and lock the wheel frame into place.

Secure to disengage the locks on the discgang before folding up the
implement.
After the side wings and the packer roller have been folded up, lower the AXR-H so
that the transport lock of the wheel suspension locks firmly and securely.
Fig. 13

Make sure that all transport locks are securely fastened before transporting the
implement on public roads.
Levelling Position
In the standard levelling position, the AXR-H must be adjusted to operate in a per-
fectly level and horizontal position, both side-to-side and front-to-rear. The AXR-H
must lie straight across, i.e., perpendicular (90) to the line of travel of the tractor.
It must also be level front-to-rear or in a parallel direction, i.e., the lift arms on the
tractor hitch should be parallel to the ground. It is important to maintain this level-
ling position to obtain level and uniform field finishing.
The discs can be angled according to need. For heavy work, set the disc gangs at a
larger angle, so that deeper cut and penetration is achieved throughout the full ex-
tent of the cutting width.
In the levelling position, adjust the gangs in the very front and in the very back to
have the same angle. There are four notches on the gang pivots which indicate the
angle of the disc gangs. Count the notches moving from (A) towards (B), and set
the pivots at the same notch position in order to set the same angle on the gangs.
(See ” Adjustments and Settings, Disc Angling ”) Remember to tighten the tightening
nut on the turnbuckle.

AXR-H
Page 17
Fig.14
Front disc gang
Rear disc gang
When working on hard, dry soil, it is recommended that the deepest cut/most ag-
gressive setting be used (B, fig. 10), but when working on loose soil and under wet
conditions, a more passive setting is appropriate (A). The more angle you have the
more aggressive the cut will be and the more tractor power will be required to pull
the implement. Thus, the discs should not be set more aggressively than neces-
sary in order to save on the wearing of the parts and the amount of tractive force
needed.
Ridge along the middle
A ridge of soil may form in the middle under the AXR-H while driving. If this occurs,
the angle of the rear disc gang is too large, or the lift might not be lowered enough,
causing the AXR-H to tilt backwards.
For a better ground finish, good results are often achieved by angling the front
gangs a little more aggressively than the rear gangs. The front discs break up the
surface easier and enable the rear gangs to mix more effectively.
Ridges on the sides
If the front gangs are set too aggressively, ridges may form on the outside of the
outermost discs. These ridges could also appear if the driving speed is too high, or
if the lift is lowered too far down, causing the AXR-H to tilt forwards. (See”O ptions,
Outer Harrows ”)
The angle of the AXR-H must be set to suit conditions. Depending on the type of
land surface and the amount of moisture in the soil, it will be necessary to adjust
the AXR-H in order to adapt the tool to the specific field that needs to be worked.
Penetration Depth
The AXR-H can be set for light tillage operations. Depth can be precisely controlled
by means of the suspended packer roller sections as well as the position control of
the tractor lift. The AXR-H can be set for very light soil cultivation at a depth of only
5 cm. If work is carried out at a depth of only 5 cm, best results will be achieved
through a very aggressive angling of the discs, so that the full amount of the cut
can be achieved.
A
B
A
B

AXR-H
Page 18
Fig. 15
The working depth is controlled by moving the setting in the position control of the
tractor lift and by adjusting the packer roller.
When starting up, first lower the tractor lift down to the chosen depth. Then, sink
the rear of the AXR-H down using the wheel frame. This special control of the im-
plement provides a uniform start and stop of tillage work at the headland.
While working in the field it is important that the AXR-H works parallel to the
ground. The position control on the lift should be set for a fixed bottom stop posi-
tion, so that the disc harrow is lowered to the same depth every time.
Travel Speed
To achieve optimum performance of the AXR-H, a working speed between 8 and 12
km/hour is recommended. Always drive according to conditions.
It should be noted that wear on the implement increases considerably when the
travel speed is increased, especially under dry soil conditions. Damage to the discs
may also result from driving too fast under unfavourable conditions.
Power Requirements
Selecting the proper size tractor ensures that the operating speed can also be
maintained when driving uphill. Sufficient power uphill offers the advantage of
leaving a uniform field surface which is important for further field conditioning.
Table 3, Guidelines for power requirements in HP/KW
Cutting width
400 cm
450 cm
500 cm
Power requirements
130/96
145/107
160/118
It is important to remember that power requirements change according to soil
type, terrain and travel speed. In addition to these factors, disc angling and pene-
tration depth also greatly influence tractor power consumption.

AXR-H
Page 19
Troubleshooting
Table 4
Ridge in the middle
•AXR-H tilted too far backwards
•Angle too wide on the rear disc gangs
Ridge on the sides
•Tilted too far forwards
•Angle too wide on the front disc gangs
•Travel speed too fast
Ridge on one of the sides
•Tilted toward one of the sides (packer setting)
•Hydraulic depth adjustment must be reset to “0”
•Imprecise driving (too much/little overlapping).
No penetration
•Angle too small on the disc gangs
•Check depth adjustment
Side wings will not unfold
•Red quick-coupler is not set correctly
•Wheel cylinders are not fully extended
•Side wings are stuck in the transport locks. The
side sections must first be fully raised to release
the transport locks.

AXR-H
Page 20
Maintenance
Proper maintenance ensures a long lifetime for the AXR-H and also optimum per-
formance from the implement. To facilitate maintenance, grease fittings have been
mounted on those locations where wear on the equipment is the greatest.
Tighten all nuts, bolts, hydraulic fittings or any other fastened assemblies after
the first workday. Inspect all pins and bolts for wear or damage and make sure that
all are securely in place to avoid any possible damage or breakdown of the ma-
chine.
Lubrication
The number of grease fittings that require lubrication varies according to the dif-
ferent AXR-H model. (See” Options” ).
Fig. 16
A
B
C
D
E
F
Table 5
Lubrication Points
Num-
ber of
fit-
tings
Lubrica-
tion in-
terval
(hours)
Photo
Wheel chassis suspension
2
25
A
Wheel chassis cylinder (top/bottom)
2
25
A
Packer roller cylinder, folding (top/bottom)
4
50
B
Packer roller pivot
2
Daily
Centre pin for unfolding of packer roller
2
50
B
Centre pin to packer roller depth control
2
50
Packer roller bearings
6
25
Disc bearings
12
50
C
Disc angling pivots
4
50
D
Suspension bracket for wing folding/unfolding
4
50
D
Eye of cylinder for wing folding/unfolding
4
50
E
Drawbar, vertical/horizontal
2
25
F