Avantco Mini Digger 150 User manual

Mini digger 150
2019 1
Operator's Manual for Attachment
Mini digger 150
Product number:
A36856
English
A437522 2019 1 EN 2015-
www.avanttecno.com

Mini digger 150 2019 1

Mini digger 150 2019 1
CONTENTS
1. FOREWORD ............................................................................................................................................4
2. DESIGNED PURPOSE OF USE.............................................................................................................5
3. SAFETY INSTRUCTIONS FOR USING THE ATTACHMENT........................................................6
4. TECHNICAL SPECIFICATIONS ..........................................................................................................9
4.1 Safety labels and main components of the attachment.................................................................................. 10
5. ASSEMBLING THE ATTACHMENT....................................................................................................11
5.1 Connecting and disconnecting hydraulic hoses............................................................................................... 12
5.2 Unattaching the digger and correct storage position .................................................................................... 14
5.3 Changing the bucket on Mini digger 150.......................................................................................................... 15
6. INSTALLING BUCKET TILT ADAPTER.............................................................................................16
6.1 Qualification requirements for installation work:........................................................................................... 16
6.2 Safety instructions for hydraulic assemblies..................................................................................................... 17
6.3 Tightening hydraulic fittings................................................................................................................................. 18
6.4 Installing the tilting bucket adapter.................................................................................................................... 20
6.4.1 Tilt adapter - hydraulic components ......................................................................................................... 20
6.5 Electric connection................................................................................................................................................ 22
6.5.1 To connect the electric harness of the attachment to the loader ..................................................... 22
7. INSTRUCTIONS FOR USE....................................................................................................................24
7.1 Checks before use................................................................................................................................................. 25
7.2 Tilt adapter ............................................................................................................................................................. 28
7.3 Working on uneven ground................................................................................................................................ 28
8. MAINTENANCE AND SERVICE ..........................................................................................................29
8.1 Inspection of hydraulic components.................................................................................................................. 29
8.2 Cleaning the attachment ...................................................................................................................................... 30
8.3 Inspection of metal structures............................................................................................................................ 30
8.4 Lubrication .............................................................................................................................................................. 30
8.4.1 Lubrication of Mini digger 150 with tilt adapter ..................................................................................... 30
9. WARRANTY TERMS..............................................................................................................................31

4 (34)
1. Foreword
Avant Tecno Oy would like to thank you for your purchase of this attachment for your Avant loader. It has
been designed and manufactured on the basis of years of experience on product development and
manufacturing. 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.
The purpose of this manual is to help you to:
operate the equipment in a safe and efficient manner
observe and prevent any hazardous situations
keep the equipment intact and ensure a long service life
The following warning symbols are used throughout this manual to indicate factors that must be taken into
account to reduce the risk of personal injury or damage to property:
WARNING:
This safety symbol refers to important safety information in this manual.
It warns of an immediate hazard that could cause serious personal
injury.
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.
This signal word indicates information about the corre
ct operation and maintenance
of the equipment.
Failure to observe the instructions accompanying the symbol can lead to equipment
breakdown or other property damage.
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, each
attachment that are used, 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 you sell or transfer the equipment, be sure to hand over this
manual to the new owner. If the manual is lost or damaged, you can request a new one from your Avant
dealer or from the manufacturer. Due to continuous product development some of the details shown in this
manual may differ from your equipment. This manual contains the original instructions in English.
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. We reserve the right to change
the contents of the manual without notification.

5 (34)
2. Designed purpose of use
The AVANT Mini digger 150 is an attachment that is suitable for use with AVANT multi purpose loaders that
are shown in Table 1. The digger is designed for occasional use as a quick and simple to use digging
attachment, that is also easy to transport. It mounts directly on the quick coupling plate of the loader. The
digger is controlled with the boom, drive, and articulation movements of the loader, and the bucket of the
digger is operated with the auxiliary hydraulics of the loader.
The robust digger can be used with several available bucket options in general excavation, and moving and
loading of soil. Changing of bucket on the Mini digger 150 is fast and easy with the standard S130-150 type
bucket quick coupling system. The bucket can also be mounted pointing forward if necessary. Bucket tilt
adapter is also available as an option.
The digger is controlled from the operator’s seat of the loader by using the controls of the boom and auxiliary
hydraulics of the loader. Excavated soil is dumped to sides by taking use of the articulation and driving of the
loader. Soil can be easily transported further away, or loaded high using the reach of the loader boom. The
control patterns of a mini digger differ from conventional excavators and backhoes. However, also
inexperienced operators and operators who are used with other types of excavators can easily assimilate with
safe and efficient use of the controls. All operators of this attachment must get familiarised with typical
hazards related to any excavation work. Before starting any digging operation the operator of the equipment
must find out if there are objects in the ground that may cause hazards.
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.
Use the digger only for occasional excavations with original buckets, tools and options. The digger must not
be used for lifting of objects. Never use the attachment to lift objects or loads other than materials that are
normally handled with a bucket. Never suspend any loads or attach other tools than a bucket. The Mini digger
150 is not designed for any other use than what is specified in this manual and it must not be used for any
other purposes than what it is intended for.
The attachment has been designed to require as little maintenance as possible. The operator can perform
regular maintenance tasks. All repair work can’t be performed by the operator, and demanding repair and
maintenance operations are to be left for professional maintenance. All maintenance work must be done using
proper safety equipment. Spare parts must be identical with original specifications, which can be ensured by
using only original spare parts. A separate spare parts catalogue may be available, consult your Avant dealer.
Familiarise yourself with the manual's instructions regarding service and maintenance. Please contact your
AVANT retailer if you have additional questions about the operation or maintenance of the equipment, or if
you require spare parts or maintenance services.
Table 1 - Mini digger 150 - Compatibility with Avant loaders
Avant
220 series 2
225
313S
320S
320S+
419
420
520
R20
525LPG
R28
528
630
R35
635
640
745
750
760i
850
860i
e5
e6
A36856 - - ••••••

6 (34)
3. Safety instructions for using the attachment
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 maintenance may cause serious personal injury or property
damage. Due to this, all operators must carefully familiarise themselves about correct use and the operator's
manuals of both the loader and the attachment before starting operation. Do not use the attachment if you
have not completely familiarised yourself with its operation and the related hazards.
DANGER
Misuse, careless use, or using an attachment that is in poor condition, may
cause risk of serious injuries. Familiarise yourself with the controls of the loader,
correct coupling procedure, and the correct way to operate the attachment at a safe
area. Study especially how to stop the equipment in a safe manner. Read all safety
precautions carefully.
Read all safety instructions carefully before handling the attachment
WARNING
When attaching an attachment 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 attachment to the loader. Never lift or move an unlocked attachment.
The
Mini digger 150 is designed to be used by one operator at a time. Do not let
others near the danger area of the equipment when it is in use.

Always transport the attachment as low as possible to keep the centre of gravity low,
and keep the telescopic boom retracted during driving.
Risk of electric shock - Plan all excavation tasks ahead before you dig! Find out
about the possibility of having any electric cable, gas pipe, water pipe,
communications cable or similar buried in the ground. Consult local au
thorities,
electric, water, and gas companies, and other relevant sources before starting to use
the equipment. Your area may also have a specific hotline or helpdesk available, or a
special permit may be required. If uncertain in any way, seek for more in
formation
before starting to dig.
Tipping over hazard - 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.
Crushing hazard - Make sure that the bucket is securely fitted. Loose or falling
bucket can cause serious injuries.
Risk of crushing and falling objects - The attachment must not be used for any
other purposes than intended.
Never use the attachment to lift objects or loads
other than materials that are normally handled with a bucket. Never suspend any
loads or attach any other tools than a bucket.
Risk of crushing - Keep in mind that the loader boom and the attachment can
be lowered or tilted even if the engine has been shut down.
Never leave the
driver’s seat when the bucket is lifted off from the ground. Keep hands and feet away
from moving parts.
Operate only on well lit areas. If extra caution is required to avoid hitting dangerous
or fragile materials in the ground, have another person nearby to spot possible buried
items.

7 (34)
Do not use the digger on horizontally tilted terrain. Ensure the stability of the loader
and firmness of the ground also on even terrain.
Pay attention to the surroundings and any other persons and machines moving in the
vicinity. Pay attention to the contours of the terrain and other hazards, such as
branches and trees that can reach to the driver's area, loose rocks, and slippery
surfaces.
Make sure not to tilt the digger too far up causing material to fall from the bucket on
the loader or operator’s area.
Make sure that overhead clearance is sufficient. Hitting an overhead obstacle may
cause the loader to tip over. Keep a safe distance from electric cables, lamps, or
other electric systems; hitting live parts may cause electric shock.
Ensure that ventilation is sufficient when operating indoors. Do not operate the loader
in closed spaces regardless of the engine or fuel type. Exhaust gases may
concentrate to hazardous levels.
Operate the controls of the loader in a slow and calm manner. Be careful when lifting
load to high level or lift
ing load from high. Avoid sudden changes in speed or
direction to maintain balance of the loader especially when handling heavy loads.
Drive slowly and carefully especially on inclined terrain or slippery surfaces.
Carrying heavy loads can shift the centre of gravity of the loader and lead to tipping
over of the loader. Always transport the load as low and close to the machine as
possible with the telescopic boom completely retracted to keep the centre of gravity
low and for the best stability.
The stability of the loader may change when leaving the driver’s seat, leading to
tipping over of the machine. Always remember that the boom may lower
unexpectedly due to loss of stability, mechanical fault, or if another person operates
the controls of the load
er, leading to crushing hazard. The attachment or the loader
are not intended to be left to keep a load elevated for longer periods. Lower the
attachment before leaving the driver's seat.
Keep the loader articulation in straight position when handling heavy loads. When
turning the articulation, the loader may tilt forward.
Observe maximum load indicated in the operator’s manual of the loader. Be
especially careful when the load sensor indicator is activated.
Make sure that the surface can bear the total load. Also follow the correct tyre
pressure settings.
Make sure to use only an attachment that is in good condition. Check the attachment
thoroughly in regular intervals. Do not modify the attachment in a manner that would
affect its safety. It is
prohibited to drill holes on the attachment, and welding or other
means of fixing hooks or other objects on the attachment is strictly prohibited.
Use the attachment only for its intended purpose. Other use may create unnecessary
safety risks, and the equipment may get damaged.
Make sure that the loader is equipped with necessary safety components, and that
they are in working condition. Seat belt must be used. If there are specific hazards
related to the operating area, use appropriate safety equipment.
Also read the safety instructions and correct use of the loader from the operator's
manual of the loader.
WARNING

8 (34)
Remember to wear proper personal protective equipment:

The noise level at the driver's seat may exceed 85 dB(A) depending on loader
mode
l and operating cycle. Extended exposure to loud noise can cause
hearing impairment. Wear hearing protection while working with the loader.
Wear protective gloves.
Wear safety boots whenever working with the loader.
Wear safety glasses e.g. when handling hydraulic components.
When working at construction sites, a safety helmet is recommended and may
be mandatory in addition to the falling objects protective structure (FOPS) on
the loader. Find out about other necessary safety equipment at your specific
work site.
Safe stopping of the attachment, before going near the attachment:
WARNING
Always stop the attachment following safe stopping procedure before leaving
the driver's seat. Safe stopping procedure prevents all unintentional movements
of
the attachment. Note that the loader boom can move down even if the engine of the
loader is turned off. Safe stopping procedure:
Lower the boom and the attachment on the ground.
Shut down the loader engine and lock the parking brake.
Release residual pr
essure from the hydraulic system; move all hydraulic control
levers to their extreme positions a couple of times.
Prevent starting of the machine, remove ignition key.
WARNING
Risk of crushing -
Never allow anyone to get under a
lifted attachment or loader boom.
Keep in mind that the
loader boom can be lowered or tilted even if the engine has
been shut down (crushing hazard). The loader is not intended
to be left to keep a load elevated for longer periods. Always
lower the attachment to a safe positi
on before leaving the
driver's seat.

9 (34)
4. Technical specifications
Table 2 - Mini digger 150 - Specifications
Product number: A36856
Maximum reach: 1500 mm
without telescopic boom
Weight: 85 kg
(without bucket)
Bucket: No standard bucket
See Table 4 below
Bucket coupling: Quick coupling S30-150
Tilting adapter as an option
Recommended input of hydraulic energy: 10 - 20 l/min, 20 MPa (200 bar)
Maximum input of hydraulic energy: 30 l/min, 20 MPa (200 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 for Mini digger 150. Contact your AVANT dealer for availability and for more information.
Table 3 - Mini digger 150 - Bucket options
A414301 A414304 A35230 A35383
Width: 250 mm 400 mm 750 mm 1000 mm
Edge: 2 teeth 3 teeth straight straight
Weight: 30 kg 35 kg 45 kg 61 kg

10 (34)
.
4.1 Safety labels and main components of the attachment
Listed below are the labels and markings on the attachment. They must be visible and readable on the
equipment. Replace any unclear or missing label. New labels are available via your retailer or contact
information provided on the cover.
Attachment identification plate A420209
A46771 A46772
Table 4 - Decal locations and warning messages
Decal Warning message
1 A46771 Misuse hazard -
Read instructions before
use.
2 A46772 Crushing hazard -
Do not go under a
raised attachment; stay away from raised
equipment.
3
A420209
Attachment identification plate
Table 5 - Main components of the Mini digger 150
1 Frame with Avant quick coupling brackets
2 Faster multi connector holder
3
Bucket quick coupling S30-
150, coupling
release/locking screw
Possibility to fit bucket tilt adapter
4 Bucket quick coupling tool
5 Interchangeable bucket (not included)

11 (34)
5. Assembling the attachment
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 on the loader boom 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.
The loader must not be driven and the boom must never be lifted when the attachment has not been locked.
To prevent hazardous situations, always follow the coupling procedure shown below. Also remember the
safety instructions shown in this manual. The attachment is mounted to the loader as follows:
WARNING
Crushing risk - Make sure that an unlocked attachment will not move or fall over.
Do not stay in the area between the attachment and the loader. Mount the attachment
only on level surface.
Never move or lift an attachment that has not been locked.
Avant quick coupling system:
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 and the electric harness are not in the way
during installation.
Step 2:
Turn the quick attach plate hydraulically to an obliquely forward position.
Drive the loader ont
o the attachment. If your loader is equipped with a
telescopic boom, you can utilise this.

Align the upper pins of the loader’s quick coupling plate so that they are under
the corresponding brackets of the attachment.
Step 3:
Lift the boom slightly –
pull the boom control lever backward to raise the
attachment off the ground.

Turn the boom control lever left to turn the bottom section of the quick attach
plate onto the attachment.
Lock the locking pins manually or lock the hydraulic locking.
Always check the locking of both locking pins.

12 (34)
WARNING
Risk of crushing - Avoid tipping over the attachment.
Excessive tilting or lifting of an
unlocked attachment increases the risk of tipping the attachment over. Do not use the
automatic locking of the loc
king pins when the attachment is lifted more than one meter
from the ground. If the locking pins do not return to the normal position when tilting, do
not tilt or raise the attachment any more. Lower the attachment on the ground and
secure the locking manually.
WARNING
Risk of falling objects -
Prevent dropping of
attachment.
An attachment that has not been completely locked to the
loader may fall on the boom or towards the operator, or
fall under the loader during driving, causing loss of
control of
the loader. Never move or lift an attachment
that has not been locked. Before moving or lifting the
attachment, make sure that the locking pins are in the
lower position and come through the fasteners on the
attachment on both sides.
WARNING
Make sure the loader is compatible with the attachment.
Stability of the loader,
possible overload of the attachment, and compatibility of loader control systems must be
ensured in addition to mechanical compatibility of the attachment. If you use the
a
ttachment with a loader that is not fit to be used with the attachment model you have,
risks include tipping over, damage to attachment due to overload, and risks related to
uncontrolled motion of attachment and its parts. If your loader is not listed in T
able 1 on
page , ask your Avant dealer before using this attachment.
5.1 Connecting and disconnecting hydraulic hoses
On Avant loaders the hydraulic hoses are connected using the multi connector system. If you have an Avant
300-700 series loader with the conventional quick couplers and wish to change to the multi connector system,
contact your Avant dealer or service point for instructions or installation services.
WARNING
Risk of movement of the attachment and ejection of hydraulic oil -
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. Follow safe stopping procedure
before disconnecting hydraulics.

13 (34)
Keep all fittings 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 couplings onto the holder on the
attachment.
Connecting the multiconnector system:
1.
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.
2.
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
alignment and position of the connector and clean the connectors. Also shut down the loader and release the
residual hydraulic pressure.
To disconnect the multiconnector system:
Before disconnecting put the attachment down on a solid and even
surface.
1. Switch off the auxiliary hydraulics of the loader.
2.
While pushing unlock button, turn the lever to disconnect the
connector.
3. After end
ing operation put the multiconnector on its holder on the
attachment.
Disconnecting hydraulic hoses:
Before disconnecting the fittings, lower the attachment to safe position on solid and level surface. Turn the
control lever of the auxiliary hydraulics to its neutral position.
When uncoupling 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.
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 back
and forth before disconnecting the couplings.

14 (34)
.
5.2 Unattaching the digger and correct storage position
Correct storage position:
Before d
isconnecting 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.
WARNING
Risk of tipping over -
Store the digger
properly according to instructions.
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.
Uncouple and store the attachment on level ground. The best way to store the attachment is a place where it
is protected from direct sunlight, rain, and extreme temperatures.
Avoid leaving the attachment laying directly on the ground. Place it on blocks of wood or on a pallet, for
example.
Place the multiconnector on to its holder as indicated with an arrow in the figure below. Never leave the
hydraulic connector on the ground.
Make sure that the attachment is secured against all movements during storage.
Never climb on the attachment.

15 (34)
.
5.3 Changing the bucket on Mini digger 150
The bucket is connected by a standard S30-150 tool-operated quick coupling system. Available bucket
options are shown in table 3.
Keep the digger attached to the loader for the best stability and to allow to utilise the
movements of the digger.
Locking or releasing a bucket
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 to release the bucket locking.
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 and digger bucket tilt cylinder.
Tighten the locking nut securely.

16 (34)
6. Installing bucket tilt adapter
The Mini digger 150 can be equipped with a
tilting bucket adapter, and is equipped with
necessary fastening points and holes for
installation of hydraulic hoses.
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 A3532
0 includes all
necessary components needed in installation.
Tilting bucket adapter kit A35320 (optional
equipment)
6.1 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 it’s
representative are not responsible for damages, losses or injuries resulted from incorrect or incomplete
installations. Contact your nearest Avant dealer or service point, if you have any additional questions or
require installation services.
DANGER
Risk of high pressure fluid injection through skin.
Installation includes assembling
hydraulic components. Incorrect assembl
y or loose fittings may cause ejection of high
pressure fluid. Follow carefully all safety procedures regarding hydraulic assemblies and
all given instructions.
The instructions given in this chapter are intended for qualified service technicians or
individuals with training and experience about hydraulic assemblies.
WARNING
Risk of serious personal injury.
The safety procedures concerning hydraulic
assemblies apply both when installing new components or when modifying existing
hydraulic systems. The
following installation instructions include the necessary
information needed in installation, but installation or modification work are allowed only if
the person doing them can perform them safely.
The following safety procedures and general safety prin
ciples regarding hydraulic
systems must be followed. Contact your Avant dealer or service point for more
information or installation services.

17 (34)
Protect the environment from leaking of hydraulic oil and prevent oil from draining on the
ground. Keep any
loosened hydraulic hose in an upright position or plugged, so that they
will leak as little as possible.
Clean the equipment thoroughly before starting the installation and make sure that i.e.
dirt, dust or water will not enter the hydraulic compone
nts or the hydraulic oil. Keep the
protective covers in place until the components can be installed directly. Follow safety
procedures and wear proper personal protective equipment.
6.2 Safety instructions for hydraulic assemblies
High-pressure ejection of fluid may penetrate skin and cause serious injuries:
DANGER
Risk of high pressure fluid injection
through skin - High-
pressure ejection of
fluid may penetrate skin and cause serious
injuries.
Before handling hydraulic components, make
sure that the hyd
raulic system of the
attachment and the loader are completely
depressurized. Never handle pressurized
fittings.
Never hold your hand tightly around or near a
fitting when tightening or opening it, or when
searching for leaks. Use a piece of cardboard
to find leaks.
Seek medical attention immediately in case
hydraulic fluid is injected through the skin. Also
general skin contact with the oil can be
harmful. Always wear protective gloves, safety
goggles and protective clothing.

18 (34)
Before handling hydraulic assemblies:
1.
Allow the hydraulic systems of the loader and of the attachment to cool down
completely before any work on hydraulic systems.
2.
Make sure that the loader boom or any other part of the attachment can’t move
causing crushing or pinching hazards:

Lower the loader boom to its lower position and lower the attachment firmly on
the ground. For the best stability, keep the attachment locked on the loader.

Set all moving components to a position where they are not supported by
hydraulic cylinders.
Use additional supports or lifting equipment as needed.
3. Shut down the loader engine.
4.
Move the auxiliary hydraulics control lever to its extreme positions several times to
release residual pressure.
5. Uncouple the multiconnector or quick couplings from
the auxiliary hydraulics of the
loader to prevent draining of hydraulic oil.
6.3 Tightening hydraulic fittings
Tighten the fittings carefully according to given instructions and safety procedures. Keep in mind that over
tightening will break a fitting. Tighten basic fittings carefully with hand tools using moderate torque. The elbow
fittings should be tightened at last, after hoses have been fitted to their clamps.
1. Allow the hydraulic systems of the loader and of the attachment to cool down completely before any
work on hydraulic systems.
2. Make sure that the loader boom or any other part of the attachment can’t move causing crushing or
pinching hazards:
3. Lower the loader boom to its lower position and lower the broom firmly on the ground. For the best
stability, keep the attachment locked on the loader.
4. Shut down the loader engine.
5. Move the auxiliary hydraulics control lever to its extreme positions several times to release residual
pressure.
6. Uncouple the multiconnector or quick couplings from the loader to prevent draining of hydraulic oil.
Tapered JIC-type fittings:
Lubricate the inner surfaces and threads of the fittings.

A JIC type fitting is not tightened only by torque and it will not need a lot of force at
any point when tightening. Overtightening or misalignment will break the fitting.

Turn the manually as far as possible, and then lightly with tools ensuring that the
fitting is threaded properly. When noticing clear increase in needed force, tighten
fitting to its final tightness by turning only 1/3 to 1/2 turns using tools.
After tightening, try to twist the hydraulic hose manually, the fitting should stay firm.

19 (34)
Test to find any leaks
DANGER
Before checking for leakages, or going near any hydraulic fitting, to avoid possible
ejection of pressurized hydraulic oil:
Shut down the loader engine
Depressurize the hydraulic system completely
Wipe the hydraulic components clean to find leaks more easily.
Place pieces of cardboard around the fittings to detect leaks.
Start the engine. While running on idle, operate the auxiliary hydraulics control lever briefly a couple of
times. Shut down the engine, depressurize the hydraulics, and check for any sign of leak. Tighten if
necessary.
Repeat the test by gradually increasing engine rpm and operating time. Use both directions of the
auxiliary hydraulics control lever.
DANGER
Risk of high pressure fluid injection through skin -
Test the tightness of the
hydraulic fittings carefully.
Use idle rpm when starting the first time and keep a safe
distance due to
the risk of hydraulic fluid ejection. Shut down the loader and release the
residual pressure before checking for leaks. Remember to use and wear protective
equipment.
DANGER
Risk of high pressure fluid injection through skin - Never test the tightness
of the
hydraulic components by placing hands near the fittings.
Never tighten a
pressurized hydraulic fitting, since the fitting may break and the released oil may cause
serious injuries.
Check the routing of hoses and movements of the attachment
After tightening the hydraulic components, test the movements of the attachment thoroughly. Check that the
hydraulic hoses cannot get stretched or pinched in any position of the loader boom or the attachment, and
check that the hoses are not in contact with sharp edges.
After thoroughly checking that the hoses are connected and fittings tightening, check the tightness of the
fittings as described below. The hydraulic system will de-air itself when using the auxiliary hydraulics of the
loader.

20 (34)
.
6.4 Installing the tilting bucket adapter
To install the tilt adapter, follow the instructions in the following chapters.
WARNING
Pinching and crushing hazard -
Make sure any part of
attachment cannot move.

Make sure the attachment is securely lowered on the
ground.

Shut down the loader engine and set the moving
components so that they will not cause hydraulic pressure to
the system.

Any part of the attachment must not be supported only by
hydraulic pressure or hydraulic cylinders.
Do not loosen any fitting if any pa
rt of the attachment might
move as a result.
Use additional supports as necessary.
6.4.1 Tilt adapter - hydraulic components
Table 6 – Tilt adapter components
1. Holder for bucket cylinder hoses
when tilt adapter is not fitted
2. Bucket hose connector, to be
replaced by tilt adapter selector
valve
3. Fitting holes for selector valve
4. Holder for bucket cylinder hoses
5. Holders for tilt cylinder hoses