The exact location of the check valve on a Kubota KX61-3 is not specified in the provided context. However, the check valve is part of the hydraulic system, often located near or within components like the boom, arm, or travel sections. For precise location, refer to the hydraulic system diagrams or service manual for the KX61-3.

This answer is automatically generated

Summary of Contents for Kubota KX61-3

Page 1 MINI EXCAVATOR MODELS KX61-3 KX71-3 OPERATING INSTRUCTIONS RG248-8135-9 - Original - 05/2015...
Page 2 (page 12). This documentation does neither extend nor restrict the contractual warranty. KUBOTA Baumaschinen GmbH reserves its right to change the information contained in this document with respect to future technical development without altering the basic characteristics of the excavators described herein and without amending this document.
Page 3: Table Of Contents
Hoisting the excavator with a crane ......................... 28 Transport on a flat bed trailer ........................... 30 DESCRIPTION OF THE EXCAVATOR ..................... 32 Model overview..............................32 Model KX61-3 .............................. 32 Model KX71-3 .............................. 32 Dimensions ............................... 33 KX61-3 Dimensions ............................. 33 KX71-3 Dimensions .............................
Page 4 Tables Right control console ...........................38 Description of the components of the right control console ..............39 Displays and indicators - description ......................39 Left control console ............................40 Description of the components of the left control console ..............40 Controls................................40 Description of the controls ........................41 Further components in the cab ........................42 Wiper/washer system ..........................42 Interior lighting ............................42...
Page 5 Tables Operating the controls during excavation work ................... 62 Notes for using wider and deeper buckets ....................63 Operating the dozer blade ........................63 Overview of control lever functions ......................64 Operating the boom ..........................64 Operating the arm ..........................65 Operating the bucket ..........................
Page 6 Tables MAINTENANCE ..........................91 Safety rules for maintenance ..........................91 Personnel requirements ............................91 General maintenance chart: 50 to 500 hours of operation ................92 General maintenance chart: 550 to 1000 hours of operation ................93 Servicing maintenance chart: 50 to 500 hours of operation ................94 Servicing maintenance chart: 550 to 1000 hours of operation .................95 Cleaning the excavator .............................96 Maintenance ..............................96...
Page 7 ACCESSORIES ..........................134 KUBOTA rotary beacon ..........................134 KUBOTA arms ..............................134 KUBOTA pipe safety valve ..........................135 Note on the use ..........................135 KUBOTA overload warning function....................... 136 KUBOTA quick coupling systems and equipments ..................136 KUBOTA bucket accessories ......................... 136...
Page 8: Abbreviations
Tables Abbreviations 1/min revolutions per minute International Organization for Standardi- percent zation ° degrees Kilogramme °C degree Celsius km/h Kilometre per hour Ampere Kilonewton acc. according Kilovolt American Petroleum Institute Kilowatt approx. approximately Litre ASTM American Society for Testing and L/min Litres per minute Materials...
Page 9: General Symbols
Tables General symbols Warning light Swivel boom (left) Fuel display Swivel boom (right) Engine oil display Dozer blade up Charge display Dozer blade down Glow display Control lever direction Hydraulic oil Control lever direction Travel speed Rotary beacon indicator on/off Low speed Display selector switch Forward travel...
Page 10: General Information
GENERAL INFORMATION Foreword These operating instructions apply only to the KUBOTA excavator models KX61-3 and KX71-3 which comply with the declaration of conformity stated below (page 10). Safety instructions, the rules and regulations for the use of excavators given in these operating instructions apply to the excavators mentioned in this documentation.
Page 11: Date Of Issue Of The Operating Instructions
(operator) must order a replacement from the manufacturer. Spare parts Genuine spare parts can be ordered from KUBOTA dealers by stating the model and the serial # of the excava- tor. The item numbers for the spare parts are indicated in the parts catalogue.
Page 12: Safety Rules
Safety rules SAFETY RULES Basic safety instructions • The EC machine utilization directive (2009/104/EC) dated 16/09/2009 applies for the operation of the aforementioned excavator. • The information in these operating instructions applies for maintenance and repairs. • National rules and regulations apply where applicable. Duties, liability and warranty A basic requisite for the safe handling and problem-free operation of the excavator is the knowledge of the safety instructions and safety regulations.
Page 13 Safety rules The owner must ensure at his own responsibility that • the safety rules are observed (page 12), • unapproved use and unauthorised operation (page 15) are excluded and • the approved use (page 15) is ensured and the excavator is operated in accordance with the contractual conditions of use.
Page 14: Safety Symbols
Safety rules Safety symbols The following terms and hazard symbols are used in these operating instructions: Identifies important operating procedure information which may not be immediately evident to the operator. Identifies operating procedures which must be followed exactly to prevent damage to the excavator or other property.
Page 15: Approved Use
Disposal must be undertaken in an appropriate way, according to legally prescribed pollution control and safety regulations. If you have questions about the correct disposal or storage of refuse and toxic waste, contact your KUBOTA dealer or a local waste management contractor.
Page 16: Noise Emission And Vibration
Safety rules Noise emission and vibration The values specified in this manual have been identified in the test cycle at an identical machine and are valid for a standard equipment machine. The determined values are shown in the Specifications (page 35). Noise emission The noise levels were determined using the method of determining the guaranteed sound pressure level of ISO 4871 based on directive 2000/14/EC, appendix VI.
Page 17: Safety Labels On The Excavator
Safety rules Safety labels on the excavator Keep the safety and warning symbols (labels) on the excavator clean and legible, replacing them if necessary. The positioning of the safety symbols is illustrated in the following figures. Code #: RG 208-4957-0 Keep away from fan and drive belt.
Page 18 Safety rules Code #: RG 208-4958-0 Do not touch hot parts, such as exhaust muffler, etc. Code #: RG 508-5724-0 Radiator: Risk of scalding.
Page 19 Safety rules Code #: R 2491-5736-0 Code #: RG 508-5722-0 Do not enter the swivel area. Code #: RG208-5727-0 Do not enter the manoeuvring area. Code #: RG138-5791-0 For information about loosening the crawler, consult the operating instructions.
Page 20 Safety rules Cab version Canopy version Code #: RG138-5717-0 When using a wider or deeper bucket take good care when swinging or pulling in the front attachments to make sure that the bucket does not hit the cabin or the canopy.
Page 21 Safety rules Code #: RG248-5747-0 Max. lifting capacity during swivel operation is 360° KX61-3 (canopy) Code #: RG448-5747-0 Max. lifting capacity during swivel operation is 360° KX71-3 (canopy)
Page 22 Safety rules Code #: RG248-5748-0 Max. lifting capacity during swivel operation is 360° KX61-3 (cab) Code #: RG448-5748-0 Max. lifting capacity during swivel operation is 360° KX71-3 (cab) Code #: RG158-5749-0 Risk of accidents by exceeded load when lifting! When exceeding the nominal load, a beep sounds and a warning light illuminates.
Page 23 Safety rules Code #: RG 201-5743-0 Code #: RG 208-5747-0 Code #: RG491-5796-0 Code #: RG109-5769-0 Code #: RG248-5719-0 Code #: RG201-5761-0 Code #: RG 518-5787-0 Set ball valve to match the action of the connected implement.
Page 24: Safety Devices
Safety rules Safety devices Before starting the excavator, all safety devices must be installed properly and operational. No manipulation of safety devices, e.g. the shorting of limit switches, is allowed. Protective devices may only be removed after • The excavator is standing still and the engine is stopped •...
Page 25: Roll-Over Protection (Rops)
• Do not make any structural changes to the roll-over protection. • At the time of damage, please contact your KUBOTA dealer. (Do not repair!) • Never operate the excavator without the roll-over protection. With the use of a hydraulic hammer or another attachment for demolition work, where material (e.g. asphalt) is removed and can uncontrollably sputter away, a gravel guard is recommended for protection.
Page 26: Fire Protection
Safety rules Do not use the naked hand to search for leaks; always use a piece of wood or cardboard. Protective clothing (eye protection and gloves) must be worn when seeking leaks. Leaking hydraulic oil must be bound immediately with an oil binding agent. The contaminated oil binding agent must be stored in suitable containers and in accordance with the valid regulations.
Page 27: Recovery, Loading And Transport
Recovery, loading and transport RECOVERY, LOADING AND TRANSPORT Safety rules for recovery • For recovery of the excavator, a towing vehicle of at least the same weight class as the excavator must be used. • A tow bar must be used for the recovery. If a tow rope is used, an additional vehicle to slow down the excavator must also be attached.
Page 28: Recovery
Recovery, loading and transport • Secure the excavator against sliding on the transport vehicle with chocks or chains or with suitable tiedown straps. The chocks must be secured at the crawlers and on the transport vehicle with suitable means. The operator of the transport vehicle is responsible for the secure fastening of the excavator on the vehicle.
Page 29 Recovery, loading and transport • Attach the lifting gear with shackles to the lifting eyes (1) on each side of the dozer. • Attach the lifting gear with shackles to the lifting eyes (1) on each side of the boom. •...
Page 30: Transport On A Flat Bed Trailer
Recovery, loading and transport Transport on a flat bed trailer Adhere to the safety rules (page 12) and the safety rules for transport (page 27). • Place the loading ramps on the transport vehicle at an angle of 10° to 15°. Observe the track width. •...
Page 31 Recovery, loading and transport • For safe attachment, swing out the arm and bucket and lower the boom to the ground until the bucket linkage touches the loading area. • Secure the chains and the dozer with beams (2). • Secure the excavator against sliding on the transport vehi- cle with chocks or chains (1) (note the vehicle weight).
Page 32: Description Of The Excavator
Description of the excavator DESCRIPTION OF THE EXCAVATOR Model overview The excavator is supplied in two different models KX61-3 and KX71-3. They are supplied optionally with a canopy or cab. Model KX61-3 Model KX71-3...
Page 33: Dimensions
Description of the excavator Dimensions For the dimensions of the KX61-3 and KX71-3, refer to the following figures and the table. KX61-3 Dimensions All dimensions in mm KX61-3 2490 2050 4360 3060 1830 3110 4350 4480 1160 2410 1560 1990...
Page 34: Kx71-3 Dimensions
Description of the excavator KX71-3 Dimensions All dimensions in mm KX71-3 2670 2260 4470 3170 1840 3320 4580 4770 1200 2410 1560 1990 1360 1500 1360 1500 2870 2460 4600 3300 1870 3350 4700 4890 Arm version Name Type Arm 1150 mm A = 1150 mm Arm 1350 mm A = 1350 mm...
Page 35: Specifications
RMS < 0.5 < 0.5 With standard bucket 52 kg (KX61-3) or 62 kg (KX71-3), operating readiness established. Machine weight incl. operator 75 kg. These values are measured under specific conditions at maximum engine speed and can deviate, de-...
Page 36: Identification Of The Excavator
Description of the excavator Identification of the excavator The type plate of the excavator is located at the front of the swivel frame. The owner should enter the stamped data in the field on the back of the front cover. 1.
Page 37: Assembly And Functions
Assembly and functions ASSEMBLY AND FUNCTIONS Component overview 1. Boom 11. Dozer cylinder 2. Arm cylinder 12. Dozer 3. Working light 13. Swing bracket 4. Cab 14. Boom cylinder 5. Cab door 15. Bucket 6. Engine compartment cover 16. Bucket linkage 1 7.
Page 38: Operator's Place
Assembly and functions Operator's place The operator's place is located in the middle of the cab. It in- cludes the following control elements: 1. Left control console 2. Drive levers and control pedals 3. Right control console 4. Operator's seat Right control console The right control console (see figure) includes the following components:...
Page 39: Description Of The Components Of The Right Control Console
Assembly and functions Description of the components of the right control console Right control lever The functions of the right control lever are described in the "Controls" section (page 40). Horn switch Depressing the horn switch activates the horn. Travel speed button The travel speed button switches the HI speed mode on and off.
Page 40: Left Control Console
Assembly and functions Left control console The left control console includes the following components: 1. Left control lever 2. Wrist rest 3. Control lever lock Description of the components of the left control console Left control lever The functions of the left control lever are described in the "Controls" section (page 40). Wrist rest The wrist rest allows fatigue-free operation of the control lever.
Page 41: Description Of The Controls
Assembly and functions Description of the controls Left control lever The left control lever is used to swivel the swivel frame and move the arm. See the table below for details. The figure shows, in connection with the following table, the functions of the left and right control levers.
Page 42: Further Components In The Cab
Assembly and functions Further components in the cab The following details the other components in the cabin. Wiper/washer system The front window is provided with a wiper/washer system. The system is operated with the wipe/wash switch (1) at the cab roof. Interior lighting An interior light (1) is located on the left side of the cab roof.
Page 43: Vehicle Battery
Assembly and functions Vehicle battery The vehicle battery (2) is located on the right-hand side of the vehicle above the fuel tank and under the side cover. The main fuse (1) for the electric system is located above the main battery. Tool compartment The tool compartment (1) is located below the operator's seat.
Page 44: Engine Compartment
Assembly and functions Engine compartment The engine compartment (see figure below) is positioned at the rear of the swivel frame; it is covered by a lockable hinged cover. 1. Air filter 7. Engine stop knob 2. Engine 8. Fuel filter 3.
Page 45: Hydraulic System
Assembly and functions Hydraulic system The controls, except the dozer control lever, the boom swing pedal, the auxiliary port pedal and the drive lev- ers, activate a pilot control circuit. The dozer control lever controls the valve via a Bowden cable. The accumulator (figure below, position 4) allows the boom and arm to be lowered in case of an engine failure.
Page 46: Operation
Operation OPERATION Safety rules for operation • The safety instructions (page 12) must be followed. • The excavator may only be operated according to its approved use (page 15). • The excavator may only be operated by trained personnel (page 11). •...
Page 47: Safety For Children
Operation Safety for children Children are normally attracted to machines and their normal operation. If children are in the vicinity of the machine and are not at a suitable distance and in the field of vision of the operator, this can lead to serious accidents or even death of the children. Always observe the following rules of conduct: •...
Page 48: Working In The Vicinity Of Overhead Power Lines
Operation Working in the vicinity of overhead power lines When working with the excavator in the vicinity of overhead power lines and tram lines, a minimum distance as specified in the following table must be maintained between the excavator and its attachments and the power line.
Page 49: Initial Operation
Operation Initial operation Before initial operation, the excavator must first be checked visually for external transit damages and checked if the shipped equipment is complete as ordered. • Check fluid levels as described in the "Maintenance" section (page 91). • For a description of all operation features, see the "Operating the excavator"...
Page 50: Check The Engine Oil Level
Operation Visual inspection • Check the excavator for visible damage and leaks. Check the engine oil level • Pull out the oil dipstick (1) and wipe it with a clean cloth. • Insert the oil dipstick completely and pull it out again. The oil level should be in the "A"...
Page 51: Checking The V-Belt
Operation Checking the V-belt • Check the V-belt (1) for cracks and proper tension. It should be possible to depress the V-belt for about 10 mm. Tighten the V-belt (page 97). Checking the exhaust system for leaks • Check the exhaust system for leaks and security (formation of cracks). If the inspection is carried out when the engine is warm, there is a risk of burns at the exhaust system.
Page 52: Checking The Water Separator Of The Fuel System
Operation Check the oil level in the sight glass (1). The oil level should be half way up the sight glass. Carefully check the position of the hydraulic cylinders again before topping up. For more informa- tion, see the "Topping up hydraulic oil" section (page 105). Checking the water separator of the fuel system •...
Page 53: Checking The Fuel Level Of The Fuel Tank
Operation Wipe emerged grease off immediately and store dirty cleaning cloths in the containers provided for disposal. Checking the fuel level of the fuel tank • Turn the starter switch (1) to the RUN position. • Check the fuel level at the fuel gauge (2). If "Fuel" is shown in the display, there are only 5.1 L of fuel left in the fuel tank.
Page 54: Getting On The Excavator
Operation Getting on the excavator • Move the left control console (2) up as far as possible by pulling the control lever lock (1) up. The control console must remain in this position until the engine is started, as the engine can only be started in this position.
Page 55: Backrest Adjustment
Operation Backrest adjustment • Take the load off the backrest and pull up the backrest adjustment lever (figure above, position 1). Set the backrest to the desired sitting position and release the lever. The backrest should be adjusted so that the operator can safely operate the control levers with the back resting completely on the backrest.
Page 56: Starting The Engine
Operation Starting the engine • Move the throttle lever (1) to The excavator is equipped with an anti-theft sys- tem. If someone tries to start the excavator with the wrong key, the following message will be displayed: If the bunch of keys contains metal parts, such as key rings or other keys, the engine might fail to start.
Page 57: Stopping The Engine
Operation Using the display selector switch (1) you can switch between the engine speed and the hours of operation. The time meter (display indication below) shows the actual hours of operation of the excavator (independent from the en- gine speed). The speed indicator (display indication below) shows the current engine speed.
Page 58: Driving The Excavator
Operation Check if the air intake in the right side panel, the radiator and the oil cooler are very dirty. If necessary, clean the radiator (page 97). The same applies if the warning light flashes red and the following message displays: Watch the fuel gauge.
Page 59: Driving
Operation When driving with the excavator, always observe the following safety instructions. When working on slopes, observe the tilt of the excavator (see figure). → 27 % resp. 15° Max. lateral sway Climbing performance → 36 % resp. 20° • Keep the bucket as low as possible when driving.
Page 60: Turning
Operation (A) Forward (B) Reverse (C) Straight If the dozer is not at the front, as shown in the figure, but at the rear, the operation of the drive levers is exactly opposite. Drive levers forward → the excavator drives backwards. •...
Page 61: From A Standing Position
Operation From a standing position • Leave the right drive lever in neutral, push the left drive lever forward. In this case, the turning radius is determined by the right track. (A) The excavator makes a right turn. Turning on the spot Do not make a turn on the spot with the travel speed button actuated.
Page 62: Notes For Rubber Crawler Operation
Operation • When driving on gradients, let the bucket slide over the ground if the terrain allows it. Notes for rubber crawler operation • Driving or turning on sharp objects or over steps causes excessive wear on the rubber crawlers and will lead to breaking of the rubber crawler or cause the crawler running surface and the steel inserts to be cut.
Page 63: Notes For Using Wider And Deeper Buckets
Operation • Never use the bucket as a hammer to drive posts into the ground. • Do not drive or dig with the bucket teeth rammed into the ground. • When loading soil, do not dig the bucket deeply into the ground. Instead, make relatively shallow slices with the bucket out as far as possible.
Page 64: Overview Of Control Lever Functions
Operation (A) Dozer blade up. (B) Dozer blade down. Overview of control lever functions The figure shows, in connection with the following table, the functions of the left and right control levers. Control levers Movement Right control lever Lower boom Raise boom Bucket crowd Bucket dump...
Page 65: Operating The Arm
Operation Watch the boom during lowering, so that the boom or the bucket teeth do not hit the dozer. The boom moves as shown in the figure. Operating the arm • To dump the arm, push the left control lever forward (figure, position ).
Page 66: Operating The Bucket
Operation Operating the bucket • To crowd (digging) the bucket, move the right control lever to the left (figure, position • To dump (empty) the bucket, move the right control lever to the right (figure, position When crowding the bucket, take care that the teeth do not hit the dozer.
Page 67: Swinging The Boom
Operation The turning operation takes place as shown in the figure. Swinging the boom No person is allowed to stand in the swing area during the movement. Swing carefully to avoid any contact of the front attachments with adjacent objects. •...
Page 68: Operating The Auxiliary Port
Operating the auxiliary port Implements are operated using the auxiliary port. Only implements approved by KUBOTA may be used. The implements must be operated in accordance with the operating instructions supplied with them. With the use of a breaker or another attachment for demolition work, where material (e.g. as-...
Page 69: Return Change Valve
Operation (1) Connection for right-hand part of pedal (2) Connection for left-hand part of pedal Return change valve The change valve has two settings. When the "direct return flow" (3) is enabled, the return flow is directed from the implement to the hydraulic oil tank. The return flow is directed via the right auxiliary port connector at the arm only.
Page 70: Placing Out Of Operation
Operation Placing out of operation Park the excavator in such a way that it can not move and is secured against unauthorised use. • Drive the excavator on level ground. Non-cab models should be parked under a roof. • Operate the bucket, arm and boom swing mechanism so that all hydraulic cylinders are extended half way.
Page 71: Operating The Wiper/Washer System
Operation Operating the wiper/washer system All cabin models are equipped with a wiper/washer system. Risk of injury! If you turn on the wiper while the windscreen is opened, the wiper may slide off the mounting bracket attached to the cab frame hitting the inside of the cab. there is a risk of the operator’s face being hit by the wiper.
Page 72: Operating The Room Light (Cab Version)
Operation Operating the room light (cab version) • The starter switch is in the RUN position. • To turn the light on, depress the toggle switch (1). To turn it off, press the switch in the opposite direction. Operating the rotary beacon (accessories) •...
Page 73 Operation • The starter switch is in the RUN position. • Turn the blower switch to the LO or HI position. • When the engine is at operating temperature, the heater air flows out at the air outlets under the operator's seat (1) and at the front window (2).
Page 74: Opening And Closing The Cab Door
Operation Opening and closing the cab door For cab versions, read the following instructions for opening and closing the cab door. Opening the cab door from outside Unlock the cab door at the door lock (1). Open the cab door by pulling at the door handle (2) and lock the door by attaching the hook (3) at the fixture on the cab wall.
Page 75: Opening And Closing The Windows
Operation Opening and closing the windows For cab versions, read the following instructions for opening and closing the front and side windows. Front window Always lock the front window. Do not stay in the cab and operate the excavator with the front window unlocked.
Page 76: Side Window
Operation Side window • Pull the grip (2) to release the lock and pull the side window open to the rear. • To close the side window, slide it forward until the lock engages at the window frame. The side window can be fixed to any position using the locking screw (1).
Page 77: Cold Weather Operation
Operation Cold weather operation Operating the excavator at an ambient temperature below 5 °C is regarded as cold weather operation. Necessary preparations prior to the winter season • If necessary, replace the engine oil and hydraulic oil with those of the viscosities specified for winter. •...
Page 78: Jump-Starting The Excavator
Operation Jump-starting the excavator Only a vehicle or starting device with a 12V power supply may be used. The operator must remain seated on the operator's place, the battery jumper cables must be connected by a second person. • Make the battery accessible, and remove the positive terminal cover. •...
Page 79: Emergency Stop Functions
Operation Emergency stop functions In case of emergency, you can switch off the engine and lower the boom manually. Manual engine stop If the engine cannot be stopped with the key, it can be stopped manually. • Open the engine compartment cover (page 82). •...
Page 80: Refuelling The Excavator
Operation Refuelling the excavator When refuelling the excavator, smoking, an open flame, or other sources of ignition are not al- lowed. The danger zone must be marked with signs. A fire extinguisher must be kept at hand in the danger zone. Spilled fuel must be bound immediately with an oil binding agent.
Page 81: Replacing The Fuses
Operation Replacing the fuses Defective fuses may only be replaced with fuses of the same type and same rating. The bypassing of fuses, for example by a wire, is not allowed. If the malfunction can not be remedied by replacing the fuse, or if the fuse blows again when starting, contact skilled personnel.
Page 82: Fuse Layout Of The Fuse Box
Operation Fuse layout of the fuse box Installing and uninstalling the operator's seat The seat cushions can be removed for cleaning or replacement. The backrest is given as an example. • Fold the backrest forward. • Open the clips (1) and swivel them so that the clips go through the backrest.
Page 83: Opening And Closing The Side Cover
Operation Opening and closing the side cover • Insert the key (3) in the lock of the side cover, turn it anti- clockwise, then depress the lock. • Open the side cover (1) and lift it. Secure the side cover with the stay (2).
Page 84: Replacing The Bucket
Operation • Remove the mounting screw (1). • Pull the side panel from the mounting (2) and remove it from the excavator. For installation first press the side panel into the mounting and reinstall all the screws. Replacing the bucket When replacing the bucket, make sure to wear an eye protection, a helmet and protective gloves.
Page 85: Black (Individual) Key
• Use only the special KUBOTA key ring. Other key rings can lead to signal failures between the key and starter switch, and the engine can possibly not start or a key registration cannot be performed.
Page 86: Registering A Black Key For The Machine
Operation • If you erroneously attempt to register a black key that has already been registered, the display will show the "Already registered" message. This means that registration can not be done. • If you attempt to register a fifth black key, the display will show the "Can't register any more"...
Page 87 Operation Insert red key into the starter switch. Do not turn the key at this point. If the key is in the RUN position, turn it back to the STOP position. Press the display selector switch. The display shows the "Register mode – pull out red key" message.
Page 88: Troubleshooting
Troubleshooting TROUBLESHOOTING The troubleshooting section includes only malfunctions and incorrect operations which must be remedied by the operator. Any other malfunctions may only be eliminated by trained personnel. The troubleshooting must be performed with the aid of the troubleshooting table. In order to locate a malfunction, first look in the MALFUNCTION column for the corresponding excavator malfunction.
Page 89: Troubleshooting: Operation
Troubleshooting Troubleshooting: operation Malfunction Possible cause Repair Operation Exhaust gas colour very black Air filter restricted Check and clean the air filter (page 101). Insufficient engine power Air filter restricted Check and clean the air filter (page 101). Fuel filter restricted or water in fuel Check the water separator for system water content, drain if necessary...
Page 90: Troubleshooting: Display Indications
Troubleshooting Troubleshooting: Display indications Preliminary Meas- Display Colour Problem/Error Solution • No fuel. Yellow Refill. Engine may be • Oil pressure too Stop the engine defective. Immedi- low. immediately. ately contact skilled personnel. Check the V-belt. • Faulty battery When the V-belt is If the indicator does charger circuit.
Page 91: Maintenance
A careful maintenance of the excavator will guarantee functional safety and longer service life. Neglect of the servicing will void the warranty and any liability by KUBOTA. Only use spare parts that are recommended by the manufacturer. Non-approved spare parts of inferior quality or wrong classification result in an increased risk of accidents.
Page 92: General Maintenance Chart: 50 To 500 Hours Of Operation
Maintenance General maintenance chart: 50 to 500 hours of operation Operator servicing Elapsed hours of operation General maintenance Interval Page Check the engine oil level daily Check the hydraulic oil level daily Check the fuel level daily Check the coolant level daily Lubricate front-end attach- daily...
Page 93: General Maintenance Chart: 550 To 1000 Hours Of Operation
Maintenance General maintenance chart: 550 to 1000 hours of operation Operator servicing Elapsed hours of operation General maintenance 1000 Interval Page Check the engine oil level daily Check the hydraulic oil level daily Check the fuel level daily Check the coolant level daily Lubricate front-end attach- daily...
Page 94: Servicing Maintenance Chart: 50 To 500 Hours Of Operation
Maintenance Servicing maintenance chart: 50 to 500 hours of operation Servicing by skilled personnel or KUBOTA dealer Elapsed hours of operation * Servicing Interval Page Check coolant hoses and 250 h clamps Check/adjust the V-belt 250 h tension Grease the pilot valve linkage...
Page 95: Servicing Maintenance Chart: 550 To 1000 Hours Of Operation
Maintenance Servicing maintenance chart: 550 to 1000 hours of operation Servicing by skilled personnel or KUBOTA dealer Elapsed hours of operation Servicing 1000 Interval Page Check coolant hoses and 250 h clamps Check/adjust the V-belt 250 h tension Grease the pilot valve linkage...
Page 96: Cleaning The Excavator
Maintenance Cleaning the excavator Before cleaning, shut down the engine and secure it against starting. If a steam cleaner is used for cleaning the excavator, do not direct the steam jet at electric com- ponents. Do not direct a water jet into the intake opening of the air filter. Do not clean the excavator with inflammable liquids.
Page 97: Cleaning The Radiator
Maintenance Do not open the radiator cap while the engine is still hot, risk of scalding. • Remove the radiator cap (1) by turning it anticlockwise. • The coolant level should reach the MAX. mark (see figure); if not, add coolant. •...
Page 98: Checking The Coolant Hoses
Maintenance Checking the coolant hoses Carry out the inspection while the engine is cold. • Open the engine compartment cover (page 82). Check all hose connections on the engine and to the radiator or to the heater fan (cab version) for condition (cracks, bulges, hard spots) and firm seating of the clamps.
Page 99: Replacing The Oil Filter
Maintenance Replacing the oil filter • Place an oil drain pan under the oil filter and remove the oil filter (1) with a filter wrench by turning it anticlockwise. • Coat the sealing ring of the new oil filter with engine oil. •...
Page 100: Replacing The Coolant
Maintenance Replacing the coolant Drain the coolant only when the engine is cold. Total cooling system capacity: 5.6 L • Open the engine compartment cover (page 82). • Remove the right side panel (page 83). • Open the radiator cap (1). •...
Page 101: Checking And Cleaning The Air Filter
Maintenance Checking and cleaning the air filter If the excavator is operated in a particularly dusty environment, the air filter must be checked more often. • Open the engine compartment cover (page 82). • Open the clips (2) and remove the cover (1). •...
Page 102: Replacing The Fuel Filter
Maintenance • Clean the outer filter element with compressed air (max. 5 bar) from the inside out without damaging the filter element. Wear eye protection for this service. • Insert the outer air filter element and the cover with the TOP mark up.
Page 103: Draining Water From The Fuel Tank
Maintenance Draining water from the fuel tank • Place a container with a minimum capacity of 50 L under the fuel drain plug. • Remove the drain plug (1) and drain the water. • Install the drain plug with a new o-ring on it. Replacing the return filter in the hydraulic oil tank Pay attention to utmost cleanliness when servicing the hydraulic system.
Page 104: Replacing The Suction Filter In The Hydraulic Oil Tank
Maintenance • Install a new return filter (1) in the filter support (2). • Insert the filter support with return filter into the hydraulic oil tank through the return pipe. • Check the condition of the sealing ring on the tank cap. Replace it if necessary.
Page 105: Draining And Topping Up Hydraulic Oil
Maintenance • Screw on the new suction filter by hand. • Refill hydraulic oil (page 105). • Install the return filter (page 103). Draining and topping up hydraulic oil Pay attention to utmost cleanliness when servicing the hydraulic system. This service may only be carried out after the hydraulic oil has cooled down. The suction filter must be changed along with the hydraulic oil.
Page 106: Filling The Hydraulic Oil
Maintenance Filling the hydraulic oil Filling quantity with oil change: 33.8 L Total hydraulic system capacity: 53 L • Screw out the breather filter (1). • Insert a clean funnel with a strainer into the filler opening. • Fill hydraulic oil to half way up the sight glass (figure below, position 1).
Page 107: Battery Service
Maintenance Battery service Regular maintenance may extend the life cycle of the battery considerably. Checking the fluid level of the battery • Open the side cover (page 83). • The battery fluid level should be between LOWER LEVEL and UPPER LEVEL at the filler port (figure below/C); if nec- essary, add distilled water.
Page 108: Charging The Battery
Maintenance Charging the battery Battery acid is very caustic. Avoid contact with battery acid under all circumstances. If clothing, skin or eyes have come in contact with battery acid, rinse the affected parts immediately with water. If the eyes are affected, immediately seek medical attention! Neutralise spilled battery acid immediately.
Page 109: Installing/Uninstalling And Replacing The Battery
Maintenance Installing/uninstalling and replacing the battery When disconnecting and connecting the battery, always observe the specified order → risk of short circuit. • Make the battery accessible. • Remove the negative terminal cover and take off the cable clamp. Put the clamp to the side so that contact with the negative terminal is excluded.
Page 110: Greasing The Pitch Bearing
Maintenance Greasing the pitch bearing • Fill grease through the grease nipple (1) with a grease gun. ° Grease at each 90 position of the pitch bearing. Using the grease gun, apply 5 shots at every posi- tion. See the "Recommended lubricants" section (page 116).
Page 111: Checking The Crawler Tension
Maintenance Checking the crawler tension • The crawler seam (1) is half way between the idler and sprocket. • Check the crawler sag as shown in the figure. Crawler sag "A" 10-15 mm • If the crawler sag is more than 15 mm, adjust the crawler. •...
Page 112: Replace The Drive Unit Oil
Remove the oil filler plug (1). • Fill oil as specified in the "Recommended lubricants" section (page 116). The oil level is the lower edge of the thread. Capacities: KX61-3 0.35 L KX71-3 0.60 L • Refit the oil filler plug with a new sealing ring and tighten it.
Page 113: Replacing The In-Line Filter
If the display needs to be replaced due to an error, the elapsed hours of operation are set to 0 hours by default. In this case, please contact your authorised KUBOTA dealer.
Page 114: Checking The Bolted Joints
Maintenance Checking the bolted joints The table below contains the torques for nuts and bolts. These may only be tightened with a torque wrench. Missing torques can be requested from KUBOTA. Tightening torque for screws Nm (kgf•m) 4 T (4.6) 7 T (8.8)
Page 115: Tightening Torque For Hydraulic Pipes
Maintenance Tightening torque for hydraulic pipes Wrench size Torque in Nm Pipe size Thread 30-35 M12x1.5 30-35 M14x1.5 40-45 10x1.5 M16x1.5 60-65 12x1.5 M18x1.5 75-80 15x1.5 M22x1.5 90-100 16x2 M24x1.5 110-120 18x2 M26x1.5 130-140 22x2 M30x2 140-160 25x2.5 M36x2 M22x1.5 60-65 15x1.5 for ED-2 only...
Page 116: Recommended Lubricants
Maintenance Recommended lubricants Recommendation Filled at the factory Note Ambient Quality temperature Viscosity Brand Type standard conditions In winter When diesel fuel with a SAE 10W and/or at low high sulphur content SAE 20W temperatures (between 0.50 % and 1.00 %) is used, the engine oil and engine oil filter must be re- In summer...
Page 117: Repair Work On The Machine
Maintenance Recommendation Filled at the factory Note Ambient Quality temperature Viscosity Brand Type standard conditions The fuel filled at the factory is not winter diesel. For preparing the excavator for use in winter, fill the fuel EN 590 tank with winter diesel Diesel ASTM D975 and allow the engine to...
Page 118: Safety Inspection
Safety inspection SAFETY INSPECTION All safety inspections are based on the national worker's protection regulations, safety regulations and technical specifications applicable to the country where the machine is deployed. The operator (page 15) should arrange for the safety inspections to be performed at specified intervals accord- ing to national rules and regulations.
Page 119: Taking Out Of Service And Storage
Taking out of service and storage TAKING OUT OF SERVICE AND STORAGE If the excavator is taken out of service for up to six months, the measures before, during and after taking out of service must be carried out as described below. If the vehicle is to be taken out of service for a period of over six months, contact the manufacturer for additional measures.
Page 120: Start-Up After Taking Out Of Service
Taking out of service and storage Start-up after taking out of service • If necessary, clean the excavator thoroughly. • Check the hydraulic oil for condensate water, replacing the oil if necessary. • Install the battery (page 109). • Check the safety devices for proper operation. •...
Page 121: Lifting Capacity Of The Excavator
Lifting capacity of the excavator LIFTING CAPACITY OF THE EXCAVATOR Constructive calculation of lifting capacity • The lifting capacity of the excavator is based on ISO 10567 and does not exceed 75 % of the static tipping load or 87 % of the hydraulic lifting capacity of the machine. •...
Page 122: Lifting Attachment
• When the overload warning function is enabled, the machine may be used for lifting operation only. For more information, see chapter Accessories, section KUBOTA pipe safety valve (page 135). • The lifting attachment is to be attached to the implement or to other parts of the excavator in such a man- ner as to exclude the possibility of the lifting rope accidentally unhooking.
Page 123: Load Suspension Device
Lifting capacity of the excavator Load suspension device Assumed is a load suspension device with all the characteristics listed below. • The system must withstand a load two-and-a-half-times its rated lifting load, irrespective of the point at which that load is applied. •...
Page 124: Max. Lifting Load During Swivel Operation Is 360
Lifting capacity of the excavator Max. lifting load during swivel operation is 360° KX61-3 (canopy) / arm 1050 mm and arm 1300 mm KX61-3 (cab) / arm 1050 mm and arm 1300 mm...
Page 125 Lifting capacity of the excavator KX71-3 (canopy) / arm 1150 mm and arm 1350 mm KX71-3 (cab) / arm 1150 mm and arm 1350 mm...
Page 126 Lifting capacity of the excavator Lifting capacity over front end, dozer down, only with pipe safety valve on the dozer cylinder Model KX61-3 SPECIFICATION CANOPY VERSION WITH RUBBER CRAWLER ARM 1050 mm kN (t) Lift point LIFT POINT RADIUS (mm)
Page 127 Lifting capacity of the excavator Lifting capacity over front end, dozer down, only with pipe safety valve on the dozer cylinder Model KX61-3 SPECIFICATION CAB VERSION WITH RUBBER CRAWLER ARM 1050 mm kN (t) Lift point LIFT POINT RADIUS (mm)
Page 128 Lifting capacity of the excavator Lifting capacity over front end, dozer down, only with pipe safety valve on the dozer cylinder Model KX71-3 SPECIFICATION CANOPY VERSION WITH RUBBER CRAWLER ARM 1150 mm kN (t) Lift point LIFT POINT RADIUS (mm) height Mini- Maxi-...
Page 129 Lifting capacity of the excavator Lifting capacity over front end, dozer down, only with pipe safety valve on the dozer cylinder Model KX71-3 SPECIFICATION CAB VERSION WITH RUBBER CRAWLER ARM 1150 mm kN (t) Lift point LIFT POINT RADIUS (mm) height Mini- Maxi-...
Page 130 Lifting capacity of the excavator Lifting capacity over front end, dozer down, only with pipe safety valve on the dozer cylinder Model KX61-3 SPECIFICATION CANOPY VERSION WITH RUBBER CRAWLER ARM 1300 mm kN (t) Lift point LIFT POINT RADIUS (mm)
Page 131 Lifting capacity of the excavator Lifting capacity over front end, dozer down, only with pipe safety valve on the dozer cylinder Model KX61-3 SPECIFICATION CAB VERSION WITH RUBBER CRAWLER ARM 1300 mm kN (t) Lift point LIFT POINT RADIUS (mm)
Page 132 Lifting capacity of the excavator Lifting capacity over front end, dozer down, only with pipe safety valve on the dozer cylinder Model KX71-3 SPECIFICATION CANOPY VERSION WITH RUBBER CRAWLER ARM 1350 mm kN (t) Lift point LIFT POINT RADIUS (mm) height Mini- Maxi-...
Page 133 Lifting capacity of the excavator Lifting capacity over front end, dozer down, only with pipe safety valve on the dozer cylinder Model KX71-3 SPECIFICATION CAB VERSION WITH RUBBER CRAWLER ARM 1350 mm kN (t) Lift point LIFT POINT RADIUS (mm) height Mini- Maxi-...
Page 134: Accessories
The accessories approved for this excavator by the respective countries are described in the following seg- ments. For further accessories, please contact your KUBOTA dealer or authorized retailer. Accessories from other manufacturers may only be fitted after prior written approval from KUBOTA.
Page 135: Kubota Pipe Safety Valve
Any manipulation can result in substantial personal injuries, even death, and is therefore strictly forbidden. The manipulation and repair of the pipe safety valves is forbidden. They may only be replaced by your KUBOTA dealer as a kit. Note on the use •...
Page 136: Kubota Overload Warning Function
These factors must be made known to the attachment manufacturer when ordering attachments, and be observed by the operator when operating the excavator. Various attach- ments are nevertheless of limited use only. KUBOTA bucket accessories For further bucket accessories, please contact your KUBOTA dealer or authorized retailer.
Page 137 Accessories...

This manual is also suitable for:

Kx71-3

Kubota KX61-3 Operating Instructions Manual

General Information

Safety Rules

Recovery, Loading and Transport

Description of the Excavator

Assembly and Functions

Operation

Troubleshooting

Maintenance

Safety Inspection

Taking out of Service and Storage

Lifting Capacity of the Excavator

Accessories

Quick Links

Troubleshooting

Need help?

Questions and answers

Related Manuals for Kubota KX61-3

Summary of Contents for Kubota KX61-3

This manual is also suitable for:

Table of Contents