Page 1 English North America AVANT 423 Operator's Manual A468341EN 2024 1 Avant Tecno USA 1450 E . Algonquin R d. Arlington Heights, IL 60005 sales@ avanttecnousa.com WWW.AVANTTECNOUSA.COM Tel: 847 380 9822...
Page 2 Avant 423 Safety First California Proposition 65 Warning DIESEL EXHAUST WARNING Breathing diesel engine exhaust exposes you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.  Always start and operate the engine in a well- ventilated area.
Page 3: Table Of Contents
Avant 423 2024 1 TABLE OF CONTENTS OPERATING INSTRUCTIONS ......... 79 Starting the loader ..............80 INTRODUCTION ............4 Stopping the engine (Safe stopping procedure) ....83 Foreword ................. 4 Drive control ................84 Intended use ................6 Operation in cold conditions ..........86 Make sure all relevant manuals are available.....
Page 4: Introduction
Foreword AVANT TECNO OY wants to thank you for purchasing this AVANT loader. It is the result of Avant’s long experience in design and manufacturing of compact loaders. We ask you that you read and understand the contents of this manual completely before operating the loader.
Page 5: Terms Used In This Manual
This manual is available in other languages as well This manual, all warning labels, as well as attachment operator's manuals, are available in other languages as well. Contact your AVANT dealer for a copy of instructions in needed language to make sure all operator's can understand the instructions.
Page 6: Intended Use
Particularly the regulations concerning the use of the equipment on public road areas must be observed. Contact your Avant dealer for more information about local requirements before you operate the loader on road areas.
Page 7: Make Sure All Relevant Manuals Are Available
Always read the Operator's Manual of each attachment carefully. Contact your local Avant dealer for any questions, service, spare parts or about any problems that may occur with the operation of your loader or its attachments.
Page 8: Operator Qualification
Some equipment or options that are shown in this Operator's Manual may not be available. Pictures in this Operator's Manual may show optional equipment. Availability of optional equipment is subject to change. Some options may preclude the installation and use of some other option or options. Check with your Avant dealer for more information.
Page 9: Warranty
1000 hours of use, whichever occurs first, commencing on the original date of purchase from Avant or an authorized Avant dealer (the "Warranty Period") that its Avant 423 loaders (the "Products") will be free from all defects in material and workmanship (the "Limited Warranty").
Page 10 Limitation of Remedies: In the event a Product is found to be non-conforming with the Limited Warranty set forth herein during the Warranty Period, AVANT will, at its option, either repair the same or supply a replacement thereof. THE FOREGOING STATES THE ENTIRE LIABILITY AND OBLIGATIONS OF AVANT WITH REGARD TO THE...
Page 11: Safety First
Avant 423 Safety First Safety First Incorrect or careless use of the loader can cause a serious accident. Before you operate the loader, familiarise yourself with the correct use of the loader. Read and understand this Operator's Manual, as well as all relevant safety instructions, local regulations, and safe working practices.
Page 12 Lifting of persons is only boom lower allowed with the attachment designed for this unexpectedly loss purpose: the Avant Leguan 50 access platform, stability, mechanical fault, or if following the instructions in the Operator's Manual of Leguan 50 attachment. another person operates Do not exceed the tipping load.
Page 13 Avant 423 Safety First Safety devices are installed for Risk of falling from height and WARNING your safety - Never modify or getting overrun by loader - bypass any safety function. Never lift or transport other people. Safety functions are installed for your safety.
Page 14 Safety First Avant 423 Risk being crushed Risk of crushing between tyres - WARNING CAUTION moving loader - Engage parking Do not turn the steering wheel brake before leaving the driver's while standing near the loader. seat. Follow safe stopping...
Page 15 Avant 423 Safety First Hazardous areas around the loader Asphyxiation hazard - Ensure ventilation Make sure that there are no persons in the danger zone of the loader or the attachment. The safe Asphyxiation hazard Ensure distance to other persons depends on the attachment ventilation.
Page 16 Safety First Avant 423 Hot exhaust gas Exposure diesel engine WARNING exhaust cause cancer. Burning diesel fuel produces Extremely hot exhaust gas and many potentially cancer-causing exhaust pipe - Never run the substances that are present in the exhaust of diesel engines.
Page 17: Handling Of Heavy Loads
Avant 423 Safety First Handling of heavy loads Whenever you handle heavy loads or heavy attachments: Handle heavy loads  WARNING Always handle heavy loads only on firm, level attachments with care - Risk of ground while you drive slowly with the loader.
Page 18 Safety First Avant 423 Risk of overturning - Articulated WARNING frame. Turning articulated frame can lead to overturning of the loader on inclined terrain or when driving at high speed. Never turn frame towards the slope while operating on inclined ground.
Page 19: Operation On Uneven Surfaces, Gradients, And Near Excavations
Avant 423 Safety First Operation on uneven surfaces, Risk of tipping over on uneven gradients, and near excavations WARNING ground Drive slowly inclined surfaces. Always keep Uneven ground can cause the load close to the ground. Keep loader to overturn - Risk of the seat belt always fastened while driving the loader.
Page 20: Personal Safety And Protective Equipment
Safety First Avant 423 Whenever you operate the loader on uneven Personal safety and protective ground keep the following in mind: equipment  Handle heavy loads only on even surfaces. Lifting a load WARNING Risk of personal injuries turning uneven...
Page 21 Avant 423 Safety First  When working construction Safety frame (ROPS) and safety canopy sites, safety helmet (FOPS) recommended mandatory in addition to the falling The loader is equipped with a Rolling Over Protective objects protective structure Structure (ROPS) and a Falling Object Protective (FOPS) on the loader.
Page 22 Avant representative. If you modify the electric cables. See the following loader or attachment, it can become dangerous and cause serious injuries or even death. Unauthorised table for minimum distances.
Page 23 Avant 423 Safety First In case of inadvertent contact or proximity with live Safety of digging electric source, or if electric cables are exposed during digging:  Risk of serious injury or death - Do not leave the loader until the electricity has...
Page 24: Electric System And Handling Of The Battery
Safety First Avant 423 Electric system and handling of the battery The battery of the 12 volt electric system of the loader WARNING Lead acid batteries produce is located at the rear, on the right side of the loader flammable and explosive gases under the cover.
Page 25: Fire Prevention
Avant 423 Safety First  Fire prevention If fuse is blown repeatedly, find out the cause. Always use fuses with correct rating. Clean the loader to avoid build-up of flammable debris,  Read the instructions for jump start, see page such as dust, leaves, hay, straw, etc.
Page 26: Battery Disconnect Switch
Safety First Avant 423 Fire hazard - Always disconnect Battery disconnect switch WARNING battery when the loader is not The loader is equipped used and always keep loader with battery disconnect switch. The clean. switch is located at the Turn the battery disconnect switch rear of the loader, on the right side.
Page 27: Description Of The Loader
Write down the serial number and the manufacturing week of your loader and have them ready when you communicate with your dealer or Avant dealer or service partner. The serial number together with the manufacturing week make it possible to identify the...
Page 28 Description of the loader Avant 423 Loader identification plate: Loader identification plate is located near the drive pedals. Contents of the identification plate: Manufacturer's name and address CE mark* Designation of machinery Type code of your loader* Serial number* Model year*...
Page 29 Avant 423 Description of the loader EU Label USA Label The EU type approval label is located on the engine valve The USA EPA/CARB label is located on the cover and on the side of engine block. engine valve cover.
Page 30: Main Parts Of The Loader
Description of the loader Avant 423 Main parts of the loader The following picture shows the main parts of the loader. These general parts are the same regardless of the cab type. 1. Front frame 5. Attachment coupling plate On the front frame are mounted: driver’s seat,...
Page 31: Signs And Decals
Make sure that the following signs and decals are clean, undamaged and readable. If any of these decals is missing or is unreadable stop using the loader until decal has been replaced. Ask for new decals from your local Avant dealer. Labels on loaders with ROPS canopy...
Page 32 Description of the loader Avant 423 Table 2 - List of safety labels and markings on the machine Label: ROPS canopy or Cab L Product code: A464215 This decal includes multiple individual warnings. All warnings in Location this decal are described separately below.
Page 33 Avant 423 Description of the loader Label 1 continued (A464215) Message Always follow all warnings and instructions. Instructions and warnings are provided for your safety. Message Parking brake handle.
Page 34 Description of the loader Avant 423 Label Message WARNING PERSONAL INJURY HAZARD Always wear: hearing protection, gloves and safety shoes. Find additional protective equipment is required due to worksite or attachment, such as: eye protection, respirator mask, high visibility clothing, protective helmet.
Page 35 Avant 423 Description of the loader Label Message WARNING FIRE HAZARD Turn the battery disconnect switch to OFF whenever leaving loader unattended. Make sure there is no flammable material near engine. FOLLOW SERVICE SCHEDULE Unserviced loader and flammable materials in engine bay can cause risks of injuries or fire.
Page 36 Description of the loader Avant 423 Label Message WARNING NOISE HAZARD Noise level at driver's seat can reach 85 dB(A), or higher, depending on use and type of attachment. Continuous exposure to noise above 80 dB(A) can cause permanent hearing loss.
Page 37 Avant 423 Description of the loader Label Message DANGER CRUSH HAZARD Keep away from lifted boom or attachment. Lower boom or attachment down on ground, or use service support. Location One label on top of the boom and two labels on each side of the boom.
Page 38 Description of the loader Avant 423 Label Message CAUTION PINCH POINT Moving articulated frame can cause contact with legs. Stay away from area between wheels. Location Near loader articulation joint at loader entry point. Product code: A446551 CAUTION Risk of crushing and injury to legs - Ballasted tires are heavy.
Page 39 Avant 423 Description of the loader Label Message WARNING BURN HAZARD Pressurized hot coolant can cause serious burn. Never open when hot. Stop engine and allow to cool. Location Engine compartment, on engine coolant reservoir. Product code: A446549 WARNING CUTTING AND SEVERING HAZARD Rotating fan.
Page 40 Description of the loader Avant 423 Table 4 - Additional decals on loaders equipped with a cab The following labels are placed to the loader if the loader is equipped with cab L. Label Message EMERGENCY EXIT Use the window hammer to break glass. Make sure the safety hammer is available for emergency use.
Page 41 Avant 423 Description of the loader Table 4 - Information labels Label Message ROPS/FOPS Approval, on Location loaders with ROPS canopy or Cab L ROPS frame, inside Product code A49517 Sound power level 101 dB(A) Location 2000/14/EC Right panel near driver's...
Page 42: Technical Specifications
Description of the loader Avant 423 Technical specifications Dimensions Width Tyre Width General dimensions With standard wheels 5.70-12" TR 36.6 in (930 mm) Length 86.4 in (2195 mm) 23x8.50-12" TR/GR 41.3 in (1050 mm) Width 41.3 in (1050 mm) Height (with standard 23x10.50-12"...
Page 43 Avant 423 Description of the loader...
Page 44: General Information
Standard: Faster multiconnector system on front Auxiliary hydraulics Optional: Extra auxiliary hydraulics coupling on front or rear Attachment coupling Avant quick coupling attachment plate Hydraulic oil tank capacity 6.9 gal (26 l) ISO VG 46, mineral oil only Hydraulic oil type...
Page 45: Engine Specifications
Avant 423 Description of the loader Engine specifications Engine specification Avant 423 Engine make and type Kubota D902-EF03 EU: 2016/1628 Stage V Emissions level USA: EPA & CARB Tier 4 Operating principle Diesel, 4-stroke, OHV, 2 valves/cylinder Number of cylinders Bore x stroke 2.8 x 2.9 in (72 x 73,6 mm)
Page 46: Fuel Requirements
Contact Avant service in case of problems related to fuel in cold temperatures.
Page 47: Tyres
Use tyre and rim models that are recommended by Avant to ensure that the tires meet the dimension, load, and speed requirements for this loader model. Replace tires if there are visible damages on the tyre or rim, or if the wear surface of the tyre has worn, or if there are visible differences between the tires.
Page 48: Snow Chains
Description of the loader Avant 423 Use the widest possible tires For the best stability and controllability, always use the widest tires possible. Tires that are narrower than the standard tires are intended for special purposes only with width restriction on the machine.
Page 49: Auxiliary Hydraulics Oil Flow
Avant 423 Description of the loader When the loader is equipped with ballasted tires, the Auxiliary hydraulics oil flow following label must be applied to both sides of the loader near articulation joint. If you replace the tires The following graph shows auxiliary hydraulics output with normal tires, make sure to remove this label.
Page 50 Description of the loader Avant 423...
Page 51: Lift Capacity
Avant 423 Lift capacity Lift capacity Lift capacity describes the load the loader can handle. Risk of tipping over - Follow WARNING Lift capacity is limited by the following main factors: safety instructions. Know the Stability of the loader weight...
Page 52 Lift capacity Avant 423 Falling load hazard - Never Definitions exceed the maximum load of the Any illustration, chart, table or value of tipping attachment. The lifting force of the load and the ROC table are valid only when the...
Page 53: Load Charts
Load charts of other attachments In this Operator's Manual there is only a load chart for the pallet forks A21047. All Avant attachments have their own Operator's Manual which include more information about their rated operating capacities when used with different loader models.
Page 54: Rated Operating Capacity
Lift capacity Avant 423 Rated operating capacity Load chart on the left side of the label: To easily determine how much load the loader can The graphic on the left side of the label shows the handle safely, a table of the tipping load and a...
Page 55 Avant 423 Lift capacity Rated operating capacity label A432613, in pounds. The ROC table is valid, when:  The ground is firm and level  Loader is stationary or driven max 1 mph (2 km/h), with smooth and slow control movements ...
Page 56: Tipping Load - Load Diagram
 When the boom is lifted to horizontal position, the Load diagram 423 tipping load is reduced to about 1124 lb (510 kg) (line a in load diagram, the horizontal distance of the center of the load on forks increases to about...
Page 57 Avant 423 Lift capacity How to estimate actual lifting capacity The actual tipping load and stability of the loader depends on many factors that you must consider when you handle heavy loads or attachments. Listed in the table below are many factors that influence the stability of the loader.
Page 58: Controls And Options Of The Loader
Controls and options of the Loader Avant 423 Controls and options of the Loader This chapter describes the location and function of the controls of the loader. The location and function of controls may be slightly different in different models and cab versions. See the following pages for information about the controls and the options of the loader.
Page 59: Overview Of Controls
Avant 423 Controls and options of the Loader Overview of controls Reference Page Dashboard Switches on the dashboard Indicator lights Gauges Ignition switch Control lever of boom and bucket Control lever for auxiliary hydraulics Control lever for telescopic boom Control switches on the panel...
Page 60 Controls and options of the Loader Avant 423 Switches on the panel The number of the additional control switches depends on which options have been installed on the loader. The position and order of switches may be different than shown in this chapter.
Page 61: Dashboard
See page. Work light switch Standard front work lights of the loader. Seat heater switch Not available for Avant 423 Seat heater is not available on 423, even if switch is present Signal horn Ignition switch See page 81 Gauges:...
Page 62 Green Work light switch at lower part of dashboard Seat heater on Green Not available for Avant 420/423 Low engine oil pressure Stop engine immediately. Low oil pressure can cause severe engine damage. Check first if low pressure is caused by low engine oil level.
Page 63: Control Of Loader Boom, Auxiliary Hydraulics And Other Functions
Avant 423 Controls and options of the Loader Control of loader boom, auxiliary hydraulics and other functions Most of the functions of the loader are controlled with the controls at the right side of the operator: Boom and bucket movements, auxiliary hydraulics (attachments), auxiliary hydraulics pump speed etc., depending on loader model.
Page 64: Telescopic Boom Control Lever
Controls and options of the Loader Avant 423 3. Telescopic boom control lever 4. Hand throttle lever The telescopic boom makes many tasks easier, also The engine running speed is controlled with the hand those that do not involve lifting. You can, for example, throttle lever.
Page 65: Parking Brake Handle
Controls and options of the Loader 5. Parking brake handle 6. Joystick - 6 function (option) Avant 423 is equipped The loader can be equipped, as an option, with an 6- with a mechanical parking function joystick. You can use either manual control brake.
Page 66: Opticontrol
® fitted on the joystick. mode depending attachment. Opticontrol replaces previously available ® Attachment control switch pack option for Avant Keep switch loaders. position, unless using attachment that is intended to When the Opticontrol is installed to the loader, there ®...
Page 67: Electric 12 V Outlet
12 V outlet of the loader. You when operated too fast. Damaged can also contact your Avant dealer to fit an electric plug to the attachment multiconnector. machine parts also ejected.
Page 68: Boom Floating (Option)
Controls and options of the Loader Avant 423 Boom floating (option) Boom self-levelling (option) The boom floating is a system that allows an Counterweights attachment to follow the surface of the ground. The floating system releases the lift cylinder and allows it to...
Page 69 Avant 423 Controls and options of the Loader Additional counterweights (option) Risk of sudden loss of stability - CAUTION Always install Additional counterweights can be installed to increase the stability of loader when handling heavy loads or counterweight firmly. attachments.
Page 70: Adding Or Removing Counterweights
Controls and options of the Loader Avant 423 Risk of moving or falling of the Adding or removing counterweights loader - Never lift or tie down When installing removing counterweights loader from side appropriate lifting equipment must be used. counterweights. Eyelets on extra...
Page 71: Trailer Coupling (Option)
2 in (50 mm) ball hitch Trailer light connector is available as an option for A417323 Avant loaders. When towing a trailer with the loader on public roads, the trailer lights must be used. However, Max. allowed vertical load: 463 lb (210...
Page 72: Extra Auxiliary Hydraulics Outlets, Front And Rear (Option)
Controls and options of the Loader Avant 423 Reverse buzzer (option) Extra auxiliary hydraulics outlets, front and rear (option) A reverse buzzer gives an audible signal whenever reversing with the loader. The buzzer alarms others of In addition to the standard auxiliary hydraulics outlet, an approaching machine.
Page 73: Seat - Seat Belt And Seat Adjustments
Avant 423 Controls and options of the Loader Seat - Seat belt and seat adjustments Risk of falling from the loader Suspension seat WARNING and getting run over by loader - The suspension seat has the following adjustments: Never carry passengers. The seating capacity of the loader is strictly one person only.
Page 74 Controls and options of the Loader Avant 423 Risk of injury - Make sure that CAUTION the adjustments of the seat are locked in place before using the loader. Unlocked adjustment of the seat can cause the seat to move, or even slide off from its rails, causing risk of loss of control and injury.
Page 75: Lights
Check panel. your local regulations concerning Avant work lights are LED modules. There are different the use of the loader on road brightness options, check your Avant dealer. areas, need for registration, and need for insurance.
Page 76: Light Control Switch
Controls and options of the Loader Avant 423 Light control switch (road traffic light Warning beacon (option) kit) A warning beacon is available as an option. The warning beacon warns others about the moving loader. Loaders that are fitted with the road traffic light kit have...
Page 77: Cabs (Option)
Avant 423 Controls and options of the Loader Cabs (option) The Avant 423 can be equipped with cab L. All versions are ROPS and FOPS certified. ROPS Cab L canopy ROPS ● ● ROPS & FOPS Certified Windscreen, wiper and washer, ●...
Page 78 Controls and options of the Loader Avant 423 Windscreen washer tank (Cab L) Cab Safety Windscreen washer tank and filler cap on loaders with Make sure visibility from the cab is adequate. Keep all cab L are located outside the cab, in front of the window panels clean and clear of snow, ice, etc.
Page 79: Operating Instructions
Avant 423 Operating instructions Operating instructions Always remember – safety first. Test all the functions of the loader at an open and safe place. Make sure that there are no persons in the operating area of the machine and the danger zone of the attachment.
Page 80: Starting The Loader
Operating instructions Avant 423 Starting the loader Before start Risk of asphyxiation - Do not start the loader in enclosed Before starting the engine do the daily checks, see space - Exhaust emissions can page 111. kill within minutes. Exhaust...
Page 81: To Start The Engine
Avant 423 Operating instructions Ignition key To start the engine Perform daily checks (see Maintenance & Service on page 105). Turn the battery disconnect switch to ON. Sit on the driver's seat, adjust seat and fasten seat belt. The ignition key can be switched into the following The loader will not start unless driver is seated.
Page 82 Operating instructions Avant 423 Risk of injury to bystanders - After starting: WARNING Avoid unintended movements of After starting the engine, complete the daily checks, see page 111. the attachment:  If the auxiliary hydraulics is Make sure that all the warning...
Page 83: Stopping The Engine (Safe Stopping Procedure)
Avant 423 Operating instructions Stopping the engine (Safe stopping procedure) Set loader engine rpm to idle. Stop the attachment (move auxiliary hydraulics control lever to neutral position, see page 63).  Switch off also electric functions of attachment Engage the parking brake. Make sure the parking brake has locked by pressing both drive pedals in turn, the loader should not move.
Page 84: Drive Control
Avant 423 Drive control Principle of operation Drive pedals Avant 423 loader is equipped with a hydrostatic drive Using the drive pedals: system. This is based on a variable displacement hydraulic pump in the drive circuit that is proportionally controlled with the two drive pedals. Driving of the machine is controlled with the drive pedals and hand throttle.
Page 85 Avant 423 Operating instructions In general, the X-lock should be switched off during general use, where high pushing force is not needed. When you want to have a high pulling force: Also, when operating on hard surfaces, the X-lock should be switched off to reduce tyre wear. When...
Page 86: Operation In Cold Conditions
If the loader is used constantly in high ambient temperatures, hydraulic oil type and viscosity must be suitable Risk of fire and electric shock - for these conditions. Contact Avant WARNING Check the voltage rating of the service. block heater.
Page 87 The engine block heater A435412 is intended to operate with electric supply of 110 - 120 V, 50-60 Hz AC power. Do not modify the cable or use transformers. Contact your Avant dealer service point information about other types of block heaters.
Page 88: Steering Of The Loader
Operating instructions Avant 423 Steering of the loader Risk of collision and crushing - WARNING Steering of the loader is controlled with the steering Stay and keep hands and feet wheel. The steering system is hydraulically powered. A inside the safety frame. Always...
Page 89: Material Handling
ROPS. If you do not use Operator's Manual of an Avant attachment. seat belt, there is a risk of getting thrown off from the driver's seat Risk of tipping over - Loader can...
Page 90: In Case The Loader Tips Over
Operating instructions Avant 423 In case the loader tips over Avoid tipping over of the loader with careful operation and with the instructions given throughout this Operator's Manual. However, it is important to know what to do in case the loader tips over.
Page 91: Working With Attachments
Any attachment mounted on the loader must meet applicable safety and technical standards and requirements. An attachment that is not specifically designed for the loader may cause unnecessary safety risks. Make sure that 423 is specifically listed as compatible loader in the Operator's Manual of the attachment. Some attachments may require the use of additional special protective guards or personal safety equipment.
Page 92 Use only Avant attachments that have been designed for your loader model. Any attachment that is fitted to the loader must be designed to be used specifically with Avant 423, and this must be stated in the Operator's Manual of the attachment.
Page 93: Coupling The Attachments
Avant 423 Working with attachments Coupling the attachments The attachment is mounted to the loader boom by using the quick coupling plate on the loader boom and the counterpart on the attachment. The attachment is coupled with two manually operated locking pins of the coupling plate.
Page 94 Working with attachments Avant 423 Step 3:  Lift the boom slightly – pull the boom control lever backward to lift the attachment just off the ground.  Turn the boom control lever left to turn the bottom section of the quick coupling plate of the loader onto the attachment.
Page 95: Connecting The Hydraulic Hoses Of The Attachment
Avant 423 Working with attachments Connecting the hydraulic hoses of the attachment Hydraulic hoses of the attachment are equipped with the multiconnector system, which connects all hoses at the same time. Risk of movement of the attachment and ejection of hydraulic oil - Never...
Page 96: Using The Auxiliary Hydraulics
Working with attachments Avant 423 Using the auxiliary hydraulics Auxiliary hydraulics (hydraulically operated attachments) are controlled with the lever on the control panel, or with the buttons on the 6 function joystick (see page 63). The locking position of the lever facilitates operation of the attachments that require constant oil flow (rotary broom, backhoe etc.).
Page 97: Releasing The Residual Pressure Of Hydraulic System
Avant 423 Working with attachments Releasing the residual pressure of hydraulic system Make sure that there is not pressure in the hydraulic system that could cause danger during service operations. To release the pressure in hydraulic system: Lower the boom down completely and place attachment firmly on the ground...
Page 98: Coupling Adapters
Avant 423 Coupling adapters Avant offers coupling adapters to help the use of some specific attachments. See the Operator's Manual of each attachment if an adapter can be used. All adapter types are locked to the quick coupling plate of the loader. The adapters have similar quick coupling system to lock the attachment onto the adapter and loader.
Page 99 Avant 423 Working with attachments Rotating adapter A424406 The rotating adapter is intended for same kind of work as the tilting adapter. The fully rotating adapter makes it possible to turn the attachment fully upside down. This can be helpful in levelling work.
Page 100: Storage, Transport, Tie Down Points And Lifting
Storage, Transport, Tie down points and Lifting Avant 423 Storage, Transport, Tie down points and Lifting Before transporting or lifting the loader: Tie down points  Mount the articulation frame lock, see page 109 The loader must be tied down securely if transporting it ...
Page 101 Storage, Transport, Tie down points and Lifting Transport cover Tie down points at the rear of the loader: To protect the loader during transport, transport cover is available. Contact your Avant dealer. full, closed Preparing the loader for transport: transport and weather cover over Always secure the load.
Page 102 Storage, Transport, Tie down points and Lifting Avant 423 Risk of loss of control of towing Tie down options vehicle - Never load trailer so Optional equipment for frequent trailer transport that there is lifting force on the If transporting the loader frequently on a trailer, tow bar.
Page 103: Storage
Eyelets on extra trouble-free use of the loader. side counterweights  It is recommended to have the periodic service installing or removing the side made before storage. Contact Avant service. counterweight only. Never attempt  Clean the loader carefully. lift loader from ...
Page 104: Lifting Of The Loader
Storage, Transport, Tie down points and Lifting Avant 423 Lifting of the loader The following picture shows the principle of lifting a loader with the ROPS frame using four lifting straps: Lifting a loader with ROPS: When lifting a loader...
Page 105: Service And Maintenance
Before working on the electric system or battery, disconnect the battery.  Contact your Avant dealer or Avant service for spare parts or more information about any service procedure. Risk of burns, cuts, and sprayed oil or dirt - Use...
Page 106 Service and maintenance Avant 423 High-pressure ejection of fluid may penetrate skin and cause serious injuries - Never handle pressurised components. Before handling hydraulic components, make sure that the hydraulic system of the attachment and the loader are completely de-pressurised. Do not hold your hand near a fitting when tightening or opening it, and never use hands to search for leaks.
Page 107: Engine Compartment And Storage Spaces On The Loader
Avant 423 Service and maintenance Risk of burns - Allow loader to WARNING Consider the environment cool before opening covers. The fluids in the machine are Engine parts, exhaust system, and harmful environment. hydraulic parts may be extremely Never allow fluids to leak in the hot after use.
Page 108 Service and maintenance Avant 423 Storage inside cab There are storage areas around the driver's seat and elsewhere in the cab. Place objects so that they will not interfere with controls of the loader and will not block visibility. Risk of fire and burns - Do not...
Page 109: Installing Of Service Support And Frame Lock
Avant 423 Service and maintenance Service support in place Installing of service support and frame lock Installing boom service support: The red service support of the boom lift cylinder is located at the tip of the boom, behind the attachment coupling plate.
Page 110: Daily Inspections And Periodic Service Schedule
Follow the recommended service schedule. Keep records of services made. Contact Avant service if you are unsure about any of the service procedures, or if you need spare parts.
Page 111: Daily Maintenance And Inspections
Avant 423 Service and maintenance Daily maintenance and inspections  Do a walk-around check of the loader before each working shift. Complete the tasks listed below daily before starting to use the loader and after each 10 working hours. ...
Page 112: Periodic Service And Maintenance
In addition to the items listed in the daily and weekly inspections, the following service procedures must be completed periodically. Some of the listed service operations require specialized skills, equipment, and knowledge, and they are intended only for professional technicians. Contact your Avant dealer to locate your nearest Avant service. After every 200 hours of use or...
Page 113 Risk of injuries caused by incorrect parts or service - Use only original spare parts WARNING supplied by Avant. Use of wrong parts may cause serious personal injuries related to damage of the loader or premature wear of its components. Always use original Avant...
Page 114: Daily And Routine Maintenance Procedures
Service and maintenance Avant 423 Daily and routine maintenance procedures Risk of fire or explosion - Handle fuel with care 1. Add fuel  Always stop the engine and Check fuel level from fuel gauge in dashboard and fill allow it to cool before refueling.
Page 115 Do not use the loader if you see damaged, cover with a rag. bent, heavily corroded, or deformed metal Clean also the space between the front hydraulic parts. Contact Avant service for service, if motors periodically by removing the cover panel at the necessary. front of the loader.
Page 116 Service and maintenance Avant 423 C. Clean the engine compartment D. Clean cooling systems Check and clean engine cooling areas, air intake areas, and the external surfaces of engine. Dust, hay, Proper cooling essential. and other combustible materials on and around the prevent overheating, clean screens, engine will cause a fire hazard.
Page 117 Avant 423 Service and maintenance Greasing points are listed in the following table. 4. Add grease to the lubricating points Reference Number of points Greasing of the pivot points is 1. Articulation joint essential to avoid wear of joints. Right side of loader...
Page 118 Service and maintenance Avant 423 5. Check the boom, pivot pins, and other metal structures visually Check the loader structures visually. Do not use the loader if there is visible damage, signs of bending, ruptures, cracks, or buckling.  All pivot pins must be in good condition and secured in place.
Page 119 See the spare parts catalog for information about bolts, as part of periodic maintenance. Do not start the loader nuts, and washers. Contact Avant service if you are if any bolt, pivot pin, or hydraulic fitting is loose, unsure of suitable fasteners.
Page 120: Check Hydraulic Oil Level
Service and maintenance Avant 423 8. Check the attachment and the quick Hydraulic fittings of drive motors and hoses of drive system coupling plate Hydraulic fittings of the drive system are equipped with Check the locking of attachment and locking pins on a visible marker where a yellow marker is fully visible, attachment coupling plate.
Page 121 Avant 423 Service and maintenance 1. Target marker. Fill to this mark when hydraulic system is cold. The area highlighted in adjacent figure shows approximately the acceptable level. 2. The second mark on the dipstick indicates max level of hydraulic oil. Oil...
Page 122: Engine Related Inspections And Routine Maintenance
The oil dipstick (1) and the oil filler opening (2) are routine maintenance accessible on top of the engine module. Avant 423 loaders are equipped with a Kubota diesel engine. Service and maintenance instructions for the engine can be found in the Kubota Operator’s Manual supplied with the loader.
Page 123: Check Engine Coolant Level
If there is frequent need to add coolant, there may be a leak or other damage in the to the coolant reservoir, not by engine. Contact Avant service. opening the radiator cap. Check the antifreeze properties of the coolant Check the coolant level in the coolant reservoir (1) annually.
Page 124 Service and maintenance Avant 423 The engine air filter Check water separator prevents dust and dirt from entering Water in fuel can cause significant damage to the engine. dusty injection system of the engine. Always use only clean operating conditions it...
Page 125 Avant 423 Service and maintenance remove inner air filter element. It is intended to prevent debris from entering the engine during replacement of the air filter element. Replace the internal air filter element if you notice dirt or damage on it, or if its colour has changed from its original blue hue.
Page 126 Service and maintenance Avant 423 Check electric cables of the loader Check other electric cables and their routing and fastening. If you see signs of damage on electric cables or components, stop using the loader and disconnect the battery. Replace the cables and insulators before you continue to use the loader.
Page 127: Inspections After Starting The Loader
Avant 423 Service and maintenance Inspections after starting the loader Test drive control and steering Test the movements of boom  Check operation of pedals and steering. Pedals must move freely and not get stuck or feel stiff.  The boom should move smoothly to all extreme ...
Page 128: Periodic Service
Operator's Hydraulic oil type Manual. Always use correct type of clean, high-quality hydraulic Contact your Avant dealer to locate your nearest Avant oil with extra lubrication additives. Recommended oil service. types are: ...
Page 129 Avant 423 Service and maintenance 5. Change hydraulic oil filters 7. Change fuel filters demanding operating environment, when Hydraulic oil return filter: frequently adding fuel from fuel canisters, the fuel  Located on top of the hydraulic tank, under the filters must be changed more frequently than the front cover.
Page 130 Service and maintenance Avant 423  Battery type: Check the fuel cap and its threads. Clean the cap if necessary. Check that the fuel cap tightens on If the battery needs to be replaced, replace it only with threads of the fuel tank and that the ratchet system a correct type of battery.
Page 131 Measure hydraulic pressure of the boom and auxiliary hydraulics annually using the multiconnector pressure gauge adapter. Avant service will measure pressure of the hydrostatic drive system only when low pressure or poor drive performance is suspected. The hydrostatic drive pressure measurement procedure includes checks of Boom control valve pressure other drive pump settings as well.
Page 132 50 hours of use. Contact your nearest Avant service to perform this Checks and measurements related service operation. to the hydrostatic drive system are...
Page 133 It is recommended to leave this service operation to your Slide pads 1 and 2 nearest Avant service partner. Slide pads 1 and 2 can be adjusted mounting thin Slide pad part numbers...
Page 134  Clean the surface of the seat with appropriate and corrected as soon as it has been noticed. Contact cleaning supplies. your Avant service if you suspect abnormal engine  vibration or noise. Check and test the seat belt. The cooling fan and parts related to the cooling system ...
Page 135 If the loader is equipped with a cab: Contact Avant service if there is play in the articulation  Check the condition of the windscreen. Cracked or joint.
Page 136 Avant 423 Filters - list of filters To receive regular service parts easily, you can order the following service packages from your dealer. To order parts please contact your Avant dealer or authorised service. Avant filters Avant 423 Engine air filter...
Page 137: Electric System & Fuses
Make sure that the boom can not move of the oil cooler fan. Check that the cooler fan is clean, downwards. can rotate freely, and is not blocked. Contact Avant service if necessary. Check the fuses. 12 V Fuse box 2...
Page 138 In case the main fuse is blown, do not attempt to repair the loader to prevent risk of fire and to limit further damage to the loader. Remove the battery completely from the loader. Then contact authorized Avant service for thorough inspection of the electric systems of the loader.
Page 139: Jump Start And Auxiliary Power
Not all vehicles are designed to charger whenever it is possible. give or receive power for jump start. The vehicle can get severely damaged when giving or receiving auxiliary starting power. Avant takes no responsibility of damages caused by giving or receiving auxiliary power.
Page 140 Service and maintenance Avant 423 End of life disposal Risk of electric shock, sparks, Recycle and dispose the loader properly when the CAUTION loader is at the end of its useful life cycle. Drain and fire, and burns - Always use collect all fluids to applicable containers.
Page 141 Avant 423...
Page 142: Troubleshooting
Troubleshooting Avant 423 Troubleshooting Listed below are possible causes for typical problems. Further engine related causes can be found in the Operator's Manual of the engine. In case there is a trouble with the operation of the machine, check both troubleshooting lists and if the problem is not solved, contact your nearest service point.
Page 143 Avant 423 Troubleshooting Engine cranks but does not Drain water from the fuel filter. Prime the fuel system, see page start, or starts and stops 114. immediately Make sure that the fuel hoses and fuel filter are clean and not frozen.
Page 144 Troubleshooting Avant 423 Problem Possible cause Remedy Clogged radiator Clean radiator and fan from engine side. Dirt around engine Clean engine and its surroundings carefully. Engine overheats Coolant level low Add coolant. Check coolant pressure reservoir cap for tightness. Check cooling Leaking cooling system system and all hoses and connections.
Page 145 Avant 423 Troubleshooting...
Page 146: Maintenance Log
Maintenance log Avant 423 Maintenance log 1. Customer 2. Loader model Serial number 3. Date of delivery Date of service Operating Serviced by: Remarks mm / dd / yyyy hours Stamp/signature _____/ 50 h ___/___/_____ _____/ 450 h ___/___/_____ ___/___/_____...
Page 147 Avant 423 Maintenance log Notes...
Page 148 Maintenance log Avant 423 Notes...
Page 150: Index
Avant 423 Index Check electric cables, relays, operated attachments) • and other electric 63, 72, 96 components • 130 Control lever of boom and Check engine air filter bucket • 59, 63 element • 124, 128 Control of loader boom, Add fuel •...
Page 151 Avant 423 Engine related inspections Installing of service support Operation on uneven and routine maintenance • and frame lock • 109 surfaces, gradients, and near excavations • 19 Intended use • 6 Engine specifications • 45 Operator qualification • 8 Introduction •...
Page 152 Avant 423 Storage • 103 Width • 42 Storage, Transport, Tie down Windscreen washer and points and Lifting • 12, 100 wiper (Cab L) • 60, 78 Suspension seat • 73 Windscreen washer tank (Cab L) • 78 Switches and gauges • 59, 61 Work lights •...
Page 153 Avant 423 EC DECLARATION OF CONFORMITY Manufacturer: Avant Tecno Oy Ylötie 1, 33470 Ylöjärvi, Finland Technical Construction File Location: Same as Manufacturer We hereby declare that the machine detailed in this document conforms to the following EC Directives 2006/42/EC (Machinery)
Page 154 1450 E . Algonquin R d. Arlington Heights, IL 60005 sales@ avanttecnousa.com WWW.AVANTTECNOUSA.COM Tel: 847 380 9822 AVANT has a policy of continuous development, and retains the right to change specifications without notice. © 2024 Avant Tecno Oy. All rights reserved.

AVANT 423 Operator's Manual

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