Avantco Mini Digger 150 User manual

Digger 150 2013 2
Please read this manual carefully before using the equipment, and follow all
instructions.
Keep this manual for later reference.
Operator’s
Operator’sOperator’s
Operator’s
manual for Attachment
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manual for Attachment
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Product number: 400-700-series loaders: A35317
Tilting adapter: A35320

Digger 150 2013 2
CONTENTS
1. Foreword......................................................................................................................................3
2. Designed purpose of use .............................................................................................................3
3. Safety instructions for the digger..................................................................................................4
4. Mini digger specifications.............................................................................................................5
5. Assembly of the digger.................................................................................................................7
5.1. Attaching the digger to the loader......................................................................................................... 7
5.2. Connecting and disconnecting the hydraulic fittings.............................................................................. 8
5.3. Storage position ................................................................................................................................... 9
5.4. Changing the bucket........................................................................................................................... 10
5.5. Tilting bucket adapter......................................................................................................................... 10
5.5.1.Installing the tilting bucket adapter................................................................................................. 11
5.5.2.Fitting the hydraulic hoses of the tilting adapter.............................................................................. 11
5.5.3.Electric connection (tilting bucket adapter)..................................................................................... 14
6. Instructions for use.....................................................................................................................15
7. Inspections, maintenance and servicing.....................................................................................16
7.1. Checking hydraulic components......................................................................................................... 16
7.2. Cleaning and storage of the equipment............................................................................................... 17
7.3. Lubricating points............................................................................................................................... 17
8. Main dimensions........................................................................................................................19
9. Warranty terms ..........................................................................................................................20
Appendix: EC Declaration of Conformity
This manual uses the following warning symbols to indicate factors that must be taken into account to reduce
the risk of personal injury or property damage:
WARNING:
This safety symbol refers to important safety information in this manual. It warns of
an immediate hazard that could cause serious personal injury or property damage.
Read the warning text accompanying the symbol carefully and ensure that other
operators are also familiar with the warnings, since personal safety is at stake.
Notice:
This notice symbol indicates information about the correct operation and
maintenance of the equipment.
Failure to observe the instructions accompanying the symbol can lead to
equipment breakdown or other property damage.
In addition to the safety instructions included in this manual, you must observe all occupational safety
regulations, local laws and other regulations concerning the use of the equipment. Particularly the
regulations concerning the use of the equipment on public road areas must be observed. Due to continuous
product development, some of the details in this manual may differ from your equipment. We reserve the
right to change the contents of the manual without notification. Original instructions.

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1. Foreword
Avant Tecno Oy would like to thank you for your purchase of this AVANT attachment. It has been designed
and manufactured on the basis of years of experience and product development. By familiarising yourself
with this manual and following the instructions, you ascertain your safety and ensure the reliable operation
and long service life of the equipment. Read the instructions carefully before starting to use the equipment or
performing maintenance.
With these instructions, even an inexperienced user can use the attachment and loader safely. The manual
includes important instructions for experienced AVANT operators as well. Ensure that all persons using the
loader have received proper guidance and familiarised themselves with the manual of the loader and
attachment and all safety instructions before using the equipment. Using the equipment for other purposes or
use in any other way than described in this manual is prohibited. Keep this manual at hand throughout the
service life of the equipment. If the manual is lost or damaged, you can request a new one from the retailer
or manufacturer. If you sell or transfer the equipment, be sure to hand over this manual to the new owner.
2. Designed purpose of use
The AVANT Digger 150 is an attachment designed and manufactured to be suitable for use with AVANT
multi purpose loaders shown in Table 1. The digger is intended for occasional use as a quick and simple to
use digging attachment, that is also easy to transport. The digger can be attached quickly and is very
effective for its size. The robust digger can be used with several available bucket options in general
excavation, and moving and loading of soil. The digger makes use of the movements of the loader boom and
there is a hydraulic cylinder for moving the bucket.
The digger is controlled from the operator’s seat of the loader by using the controls of the boom and auxiliary
hydraulics. Excavated soil is dumped to sides by taking use of the articulation and driving of the loader, and
can also be transported further away, or loaded high thanks to its high reach. The control patterns differ from
conventional excavators, but also unexperienced operator’s, as well as operators who are used with other
typer of excavators, can easily assimilate with safe and efficient use of the controls. In addition, the operator
must get familiarised with hazards related to excavation and trenching work. Recommended options for the
most efficient use are telescopic boom on the loader and electric auxiliary hydraulics control buttons. When
using with bucket tilt adapter, also the optional attachment control switch pack is recommended. Using the
digger for other than occasional excavations with original buckets, tools or options is prohibited. The digger
must not be used for lifting of objects.
The attachment has been designed to require as little maintenance as possible. The operator can perform
regular maintenance tasks. Shown in this manual are also fitting instructions of the bucket tilting adapter, for
persons with at least basic knowledge and experience about performing work on hydraulic assemblies and
the related hazards. All fitting and maintenance tasks can’t be performed by the operator, and demanding
repair and maintenance operations should be left for professional maintenance. All maintenance work must
be done using proper safety equipment and original spare parts. Familiarise yourself with the instructions
regarding service and maintenance shown in this manual. Please contact your AVANT retailer, if you have
any additional questions about the operation or maintenance of the equipment, or if you require spare parts
or maintenance services.
Table 1 – Digger 150 A35317 compatibility with Avant loaders 745, 750
630, R35, 635, 640
520, 525LPG, R28, 528
419, 420
•
••
•
320 -
For compatibility information with a model not shown in
table, contact your Avant retailer.

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3. Safety instructions for the digger
Please bear in mind that safety is the result of several factors. The loader-attachment combination is highly
powerful, and improper or careless use or lack of maintenance may cause serious personal injury or property
damage. Due to this, you should carefully familiarise yourself with the manuals of both the loader and the
attachment before starting operation. Do not use the attachment if you have not familiarised yourself with its
operation and the related hazards.
The purpose of this operator’s manual is to help you to:
•use the equipment in a safe and efficient manner
•monitor and prevent any hazardous situations
•keep the equipment intact and ensure a long service life
•When attaching the digger to the loader, ensure that the locking pins of the loader's
quick attach plate are in the lower position and that they have locked the attached to
the loader. Also check the coupling of the bucket or other equipment.
•The digger is to be used by one operator at a time. Keep others off from the work area
and away the loader.
•Do not use the digger on horizontally tilted terrain. Ensure the stability of the loader and
firmness of the ground also on even terrain.
•Note that the excavation or trench may suddenly cave in. Exercise extreme caution
when driving near ditches or embankments, and avoid driving along a ditch or trench,
as the machine could suddenly tip over if an edge caves in. Avoid driving along
trenches and keep at least a distance equal to width of a trench.
•Never leave the driver’s seat when the bucket is lifted off from the ground. Keep hands
and feet away from moving parts.
•Make sure not to tilt the digger too far up causing material to fall from the bucket on the
loader or operator’s area.
•When removing the digger from the loader, ensure that it is secured against accidental
movement. Familiarise yourself with the instructions concerning taking the digger off
from the loader and storage.
•Pay attention to the surroundings and any other persons and machines moving in the
vicinity. Pay attention to the contours of the terrain as well as other hazards, such as
loose rocks, or branches and trees that reach the driver's area.
•Always transport the digger as low and as close to the machine as possible to keep the
centre of gravity low. Turn the edge or the teeth of the bucket towards the loader.
•Shut down the loader engine before any cleaning, maintenance or adjustments.
•Do not modify the structure of the attachment in a manner that would affect its safety.
•Make sure that the loader is equipped with necessary safety equipment, and that they
are in order. Seat belt must be used. If there are specific risks at the operating area,
such as hazard of falling objects, the loader must be equipped with protective structure.
•Also read the safety instructions of the loader from the operator’s manual of the loader.
Note that both the bucket of the attachment and the loader boom move down even if
the engine has been stopped. Never go under a raised boom or the attachment.
Lower the bucket on the ground before leaving the driver’s seat.
Improper or careless use may cause serious injuries or property damages. Familiarise
yourself with the loader controls in a safe area. Pay particular attention to safe
stopping of the attachment and the loader.

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Remember to wear proper protective clothing:
•The noise level in the driver's seat exceeds 85 dB(A). Wear hearing protection while
working with the loader.
•The use of safety boots with non-slip soles is recommended while working with the
loader.
•Wear protective gloves and safety goggles when handling hydraulic hoses or
components.
4. Mini digger specifications
Table 2 – Digger 150 specifications
Product number
A35317
Maximum reach
(without telescopic boom): 1 500 mm
Weight (with 400 mm bucket): 130 kg
Standard bucket: 400 mm
Bucket coupling: Quick coupling S30-150
Tilting adapter as an option
Maximum hydraulic pressure: 22,5 MPa (225 bar)
Suitable Avant loaders: See Table 1
Several available bucket options are listed in Table 3 below. Also a tilting bucket adapter is available as an
option. Contact your AVANT dealer for availability and for more information.
Table 3 – Bucket options
A414301 A414304 A35230 A35383
Width: 250 mm 400 mm
(standard bucket) 750 mm 1000 mm
Edge: 2 teeth 3 teeth straight straight
Weight: 30 kg 35 kg 45 kg 61 kg
Bucket quick coupling

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Listed below are the markings and labels fastened to the mini digger, which must be visible on the
equipment. Replace the warning labels, if they have become unclear or detached completely. New labels are
available via your retailer or contact information provided on the cover page.
The warning labels contain important safety information and they help to identify and
remember the hazards related to the equipment. Replace damaged or missing
warning labels with new ones.
A46771 A46772 A46803
Table 4 – Decal warning messages and locations
Decal Explanation
A46771 Read instructions before use.
A46772 Do not go under a raised attachment
or loader boom; stay away from raised
equipment.
A46803 Crushing hazard, moving bucket
mechanism. Keep clear of moving
components.
Identification plate
1 Quick attach plate
2 Hydraulic hose holder
3 Lifting points
4 Multiconnector parking
5 Bucket load cylinder
6 Bucket quick coupling S30-150
7 Bucket release
8 Bucket release tool
9 Tie down point
10 Hydraulic hose holders for tilting bucket
adapter
Identification plate of the attachment
Table 5 – Main components of digger

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5. Assemb y of the digger
The digger is ready for use as delivered. Mount the attachment and its hydraulic hoses to the loader as
instructed below.
5.1. Attaching the digger to the loader
Attaching the attachment to the loader is quick and easy, but it must be done carefully. The attachment is
mounted to the loader boom by using the quick attach plate and the counterpart on the attachment. If the
attachment is not locked to the loader, it may detach from the loader and cause a hazardous situation. In the
worst case, the attachment may slide onto the driver along a raised boom. For this reason, the loader boom
must under no circumstances be raised over one metre when the attachment has not been fully locked. To
prevent hazardous situations, always follow the attachment mounting instructions provided in the following
pages. Also remember the safety instructions shown in Chapter 3 and additional infromation shown in the
operator’s manual of the loader. The attachment is mounted to the loader as follows:
Depending on the storage position of the digger, it may tip over easily, or it can’t be
attached as shown below. Make sure that a disconnected digger will not tip over, and
move carefully around it, staying away from tipping hazard areas. See more detailed
instructions about the correct storage position of the digger in chapter 5.3. If
necessary, use, for example, blocks of wood to prevent the digger from moving.
Step 1:
•Lift the quick attach plate locking pins up and turn them backwards into
the slot so that they are locked in the upper position.
•If your loader is equipped with a hydraulic attachment locking system,
see additional instructions about the use of the locking system from the
relevant manuals.
•Ensure that the hydraulic hoses are not in the way during installation.
Step 2:
•Turn the quick attach plate hydraulically to an obliquely forward position.
•Drive the loader onto the attachment. If your loader is equipped with a
telescopic boom, you can utilise this.
•Depending on the storage position of the mini digger and the reach of
the loader, it may be necessary to assist the mounting of the attachment
by hand, if the loader is not equipped with a telescopic boom. See
Chapter 5.3 for correct uncoupling procedure and storage position.
Step 3:
•Turn the boom control lever left to turn the bottom section of the quick
attach plate onto the attachment.
•Lift the boom slightly – pull the boom control lever backward to raise the
attachment off the ground.
•Lock the locking pins manually or lock the hydraulic locking – do not use
the automatic locking pin release.

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Unlocked attachment may fall on the boom or operator,
or under the loader during driving, and cause serious
injuries. Before moving or lifting the attachment, make
sure that the locking pins are in the lower position and
come through the fasteners on both sides.
Excessive tilting or lifting of the attachment increases the risk of toppling over. Lower
the attachment onto the ground and secure the locking manually. Do not use the
automatic return of the locking pins.
5.2. Connecting and disconnecting hydraulic fittings
The default connector for hydraulic couplings is the multiconnector system. If you want to change the type of
the hydraulic couplings of the attachment or the loader, contact your Avant dealer or service point for
instructions or installation services.
Never connect or disconnect quick couplings or other hydraulic components while the
control lever of the auxiliary hydraulics control lever is locked on or if the system is
pressurized. Connecting or disconnecting the hydraulic couplings while the system is
pressurized may lead to unintended movements of the attachment, or ejection of high-
pressure fluid, which can cause serious injuries or burns.
Keep the couplings as clean as possible; use the protective caps on both the attachment and the loader.
Dirt, ice, etc. may make using the fittings significantly more difficult. Never leave the hoses hanging on the
ground; place the multiconnector onto its holder.
Connecting the multiconnector system:
Align the pins of the attachment connector with corresponding holes of
the loader connector. The multiconnector will not connect if the
attachment connector is upside down. Connect and lock the
multiconnector by turning the lever towards the loader.
The lever should move easily all the way to its locking position. If the
lever does not slide smoothly, check the aligment and position of the
connector and clean the connectors. Also shut down the loader and
release the residual hydraulic pressure.
Disconnecting the hydraulics:
Before disconnecting the fittings, lower the attachment on solid and level surface. See instructions about
storage of the digger from Chapter 5.3. Turn the control lever of the auxiliary hydraulics to its neutral position
and release residual pressure.
When removing the attachment, always disconnect the hydraulic couplings before
unlocking the quick attach plate, to prevent hose damage and any oil spills. Reinstall
the protective caps on the fittings to prevent impurities from entering the hydraulic
system.

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Releasing residual hydraulic pressure:
In case residual pressure is left in the hydraulic system of the attachment, it is often possible to disconnect
the hydraulic couplings, but it may be difficult to connect them the next time. If the fittings will not connect,
the residual pressure must be released by turning the auxiliary hydraulics control lever of the loader, when
the engine is turned off. To make sure that there will not be residual pressure in the hydraulic system of the
attachment, shut down the loader engine and move the auxiliary hydraulics control lever of the loader before
disconnecting the couplings.
Connecting standard quick couplings (alternative connection type for some loader models):
Before connecting or disconnecting the standard quick couplings, shut down the loader engine and release
the residual pressure. The standard quick couplings will not connect in case there is pressure in the system.
To connect and disconnect the standard couplings, move the collar at
the end of the female fitting. The hoses should be connected so that the
coupling equipped with a coloured cap is connected to the
coresponding coupling of the loader. Note that the protective caps on
the loader and the attachment can be fastened to each other during
operation to reduce the accumulation of dirt. When disconnecting the
standard quick couplings a small amount of oil may drip from the
couplings. Wear protective gloves and have some cloth at hand to keep
the equipment clean.
5.3. Unattaching the digger and storage position
Correct storage position:
Before disconnecting the digger, turn the bucket so
that it will be in level with the digger frame, or tilted
slightly above, as shown in adjacent figure. In this
way it will be easy to connect the digger to the
loader. Store the digger on level ground on a pallet,
for example, so that it is easier to attach, and will
not be in contact with ground.
If the digger is left in a position shown in the
adjacent figure, it’s centre of gravity will be
high from ground and the digger may tip
over easily, causing hazards of crushing
and impact to anyone near the attachment.
Storage in any other position than shown
above will result in hazard of tipping over
and is prohibited. Follow the storage
instructions.
A loader that is not equipped with a telescopic boom:
If the loader is not equipped with a telescopic boom, and the digger is stored directly against the ground, the
loader may not reach the digger and it has to be lifted manually on the quick attach pins of the loader. When
lifting the digger in order to attach it to the loader, it can be lifted manually slightly from its cylinder, and the
lifting is easy, when the digger is stored with bucket raised slightly up, as shown in figure on previous page.
Drive the loader as close to the quick attach plate of the digger and tilt the attachment plate of the loader
forward to minimise lifting height.

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When removing the attachment, always disconnect the hydraulic couplings before
unlocking the quick attach plate, to prevent hose damage and any oil spills. Reinstall
the protective caps on the fittings to prevent impurities from entering the hydraulic
system.
Avoid storing the digger directly against the ground for long periods to avoid damage
from corrosion. See chapter 7 for maintenance instructions before long storage
periods.
5.4. Changing the bucket
The bucket is connected by a standard S30-150 tool-operated quick coupling system. Available bucket
options are shown in table 3 on page 5.
Keep the digger attached to the loader for the best stability and to allow to utilise the movements of the
digger.
1. Lower the bucket close to the ground on it’s flat
bottom as shown in adjacent figure.
2. Use the provided 12 mm Allen key to rotate the
bucket locking nut counter-clockwise. Watch out
for moving of the bucket and prevent possible
swinging.
3. Lower the bucket and couple another by utilizing
the movements of the loader boom. Tighten the
locking nut securely.
5.5. Tilting bucket adapter
With the tilting adapter, a grading bucket can be used to
level the ground surface to desired slopes or, for example, to
dig a ditch. The tilting adapter includes the same S30-150
quick release system for the bucket, so the same buckets
can be used with the tilting system.
The tilting adapter kit A35320 includes all necessary
components needed in installation. The digger is equipped
with necessary fastening points and holes for installation of
hydraulic hoses. Installation includes assembling hydraulic
components, which requires special attention and is limited
to qualified persons.
Qualification requirements for installation work:
Knowledge and skills about hydraulic assemblies are required for making the installation. It is recommended
to leave the installation of hydraulic components to qualified service technicians. The manufacturer or its
representative is not responsible for damages, losses, or injuries resulted from incorrect or incomplete
installations. Some work sites may have special regulations concerning qualification requirements. Contact
your nearest Avant dealer or service point, if you have any additional questions or require installation
services.
Tilting bucket adapter kit A35320
(optional equipment)