Kubota LA514 Workshop Manual
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Kubota LA514 Workshop Manual

Kubota LA514 Workshop Manual

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WORKSHOP MANUAL
FRONT LOADER
LA514,LA724,LA854
KiSC issued 03, 2007 A

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  • Page 1 WORKSHOP MANUAL FRONT LOADER LA514,LA724,LA854 KiSC issued 03, 2007 A...
  • Page 2 TO THE READER This Workshop Manual has been prepared to provide servicing personnel with information on the mechanism, service and maintenance of KUBOTA Front Loader LA514, LA724 and LA854. It is divided into three parts, “General” and “Servicing” for each section. General Information on the tractor identification, the general precautions, maintenance check list, check and maintenance and special tools are described.

  • Page 3: Safety First

    LA514, LA724, LA854, WSM SAFETY INSTRUCTIONS SAFETY INSTRUCTIONS SAFETY FIRST This symbol, the industry’s “Safety Alert Symbol”, is used throughout this manual and on labels on the machine itself to warn of the possibility of personal injury. Read these instructions carefully.
  • Page 4 LA514, LA724, LA854, WSM SAFETY INSTRUCTIONS SAFETY STARTING • Do not start the engine by shorting across starter terminals or bypassing the safety start switch. • Do not alter or remove any part of machine safety system. • Before starting the engine, make sure that all shift levers are in neutral positions or in disengaged positions.
  • Page 5 LA514, LA724, LA854, WSM SAFETY INSTRUCTIONS VENTILATE WORK AREA • If the engine must be running to do some work, make sure the area is well ventilated. Never run the engine in a closed area. The exhaust gas contains poisonous carbon monoxide.

  • Page 6: Safety Decals

    LA514, LA724, LA854, WSM SAFETY INSTRUCTIONS SAFETY DECALS The following safety decals are installed on the machine. If a decal becomes damaged, illegible or is not on the machine, replace it. The decal part number is listed in the parts list.

  • Page 7: Loader Terminology

    LA514, LA724, LA854, WSM LOADER TERMINOLOGY LOADER TERMINOLOGY (1) Hydraulic Control Lever (3) Bucket Cylinder (5) Boom Cylinder (7) Mounting Pin (2) Boom (4) Bucket (6) Main Frame (8) Side Frame KiSC issued 03, 2007 A...

  • Page 8: Loader Specifications

    LA514, LA724, LA854, WSM SPECIFICATIONS SPECIFICATIONS Suitable Tractor Loader Model LA514 LA724 LA854 L4240, L4740, L5040, L5240, Tractor Model L3240, L3540 L3240, L3540, L3940 L5740 W1029088 [1] LOADER SPECIFICATIONS Loader Model LA514 LA724 LA854 Tractor Model L3540 L3940 L5740 1805 mm...

  • Page 9: Bucket Specifications

    LA514, LA724, LA854, WSM SPECIFICATIONS [2] BUCKET SPECIFICATIONS Loader Model LA514 LA724, LA854 Model Square 66” Round 66” HD Square 72” Round 72” HD Type Rigid Rigid Rigid Rigid Width 1675 mm (66 in.) 1830 mm (72 in.) 458 mm...
  • Page 10 LA514, LA724, LA854, WSM SPECIFICATIONS DIMENSIONAL AND OPERATIONAL SPECIFICATIONS a : 500 mm (19.7 in.) Dimensional Specifications Loader Model LA514 LA724 LA854 Tractor Model L3540 L3940 L5740 Maximum lift height 2449 mm 2597 mm 2863 mm (To bucket pivot pin) (96.4 in.)
  • Page 11 LA514, LA724, LA854, WSM SPECIFICATIONS Operational Specifications Loader Model LA514 LA724 LA854 Tractor Model L3540 L3940 L5740 Lift capacity to maximum height 510 kg 720 kg 850 kg (Bucket bottom mid point) (1124 lbs) (1587 lbs) (1874 lbs) Lift capacity to maximum height at...

  • Page 12: Table Of Contents

    GENERAL CONTENTS 1. LOADER IDENTIFICATION ................G-1 2. GENERAL PRECAUTIONS ................G-2 3. LUBRICANTS ....................G-3 4. TIGHTENING TORQUES ................G-4 [1] GENERAL USE SCREWS, BOLTS AND NUTS........G-4 [2] STUD BOLTS.................... G-4 [3] METRIC SCREWS, BOLTS AND NUTS ..........G-5 [4] AMERICAN STANDARD SCREWS, BOLTS AND NUTS WITH UNC OR UNF THREADS .................

  • Page 13: Loader Identification

    LA514, LA724, LA854, WSM G GENERAL 1. LOADER IDENTIFICATION When contacting your local KUBOTA distributor, always specify front loader serial number (1). (1) Serial Number W1010477 KiSC issued 03, 2007 A...

  • Page 14: General Precautions

    Screws, bolts and nuts should be replaced in their original positions to prevent reassembly errors. • When special tools are required, use genuine KUBOTA tools. Special tools which are not used frequently should be made according to the drawings provided.

  • Page 15: Lubricants

    9.9 Imp.gals Grease nipples Until grease overflows Moly Ep type grease** * KUBOTA original transmission hydraulic fluid ** “Extreme pressure” and containing Molybdenum disulfide is recommended. This grease may specify “Moly Ep” on it’s label. KiSC issued 03, 2007 A...

  • Page 16: Tightening Torques

    LA514, LA724, LA854, WSM G GENERAL 4. TIGHTENING TORQUES [1] GENERAL USE SCREWS, BOLTS AND NUTS Screws, bolts, and nuts whose tightening torques are not specified in this Workshop Manual should be tightened according to the table below. Indication on top of...

  • Page 17: Metric Screws, Bolts And Nuts

    LA514, LA724, LA854, WSM G GENERAL [3] METRIC SCREWS, BOLTS AND NUTS Property class 8.8 Property class 10.9 Grade Unit Nominal N·m kgf·m lbf·ft N·m kgf·m lbf·ft Diameter 24 to 27 2.4 to 2.8 18 to 20 30 to 34 3.0 to 3.5...

  • Page 18: Hydraulic Fittings

    LA514, LA724, LA854, WSM G GENERAL [6] HYDRAULIC FITTINGS Adaptors, Elbows and Others Tightening torque Item Thread size N·m kgf·m lbf·ft 9/16 37 to 44 3.8 to 4.5 27 to 33 Adjustable elbow, Adaptor 48 to 54 4.9 to 5.5...

  • Page 19: Maintenance Check List

    LA514, LA724, LA854, WSM G GENERAL 5. MAINTENANCE CHECK LIST To keep the machine working in good condition as well as to avoid any accident and trouble, carry out periodic inspection and maintenance. Check the following points before use. Service Interval...

  • Page 20: Check And Maintenance

    2. If the level is too low, add new oil to the prescribed level at the oil. IMPORTANT • Use only KUBOTA UDT or SUPER UDT fluid. Use of other oils may damage the transmission or hydraulic system. Refer to “3. LUBRICANTS”.

  • Page 21: Check Points Of Every 10 Hours

    LA514, LA724, LA854, WSM G GENERAL [2] CHECK POINTS OF EVERY 10 HOURS Greasing 1. Inject grease in all grease fitting with a hand grease gun. [A] LA514 [B] LA724 and LA854 W1011132 Lubricating 1. Lubricate joints of control lever linkage.
  • Page 22 MECHANISM NOTICE Regarding front loader control valve mechanism information, please refer to L40 series tractor WSM (Code No. 9Y121-00050). KiSC issued 03, 2007 A...
  • Page 23 SERVICING CONTENTS 1. TROUBLESHOOTING ..................S-1 2. SERVICING SPECIFICATIONS ..............S-2 3. TIGHTENING TORQUES ................S-3 4. DISMOUNTING FRONT LOADER FROM TRACTOR........S-4 5. CHECKING, DISASSEMBLING AND SERVICING........S-6 [1] CONTROL VALVE ..................S-6 (1) Checking and Adjusting ................S-6 (2) Disassembling and Assembling ............S-6 [2] BUCKET, BOOM AND HYDRAULIC CYLINDER ........S-7 (1) Disassembling and Assembling ............S-7 (2) Servicing .....................S-12 [3] SIDE FRAME AND OTHERS..............S-13...

  • Page 24: Troubleshooting

    LA514, LA724, LA854, WSM FRONT LOADER 1. TROUBLESHOOTING Reference Symptom Probable Cause Solution Page Boom Does Not Rise Control valve malfunctioning Repair or replace – Boom cylinder defective Repair or replace Control lever linkage defective Repair or replace – Hydraulic pump malfunctioning Repair or replace –...

  • Page 25: Servicing Specifications

    LA514, LA724, LA854, WSM FRONT LOADER 2. SERVICING SPECIFICATIONS Item Factory Specification Allowable Limit Relief Valve Setting Pressure 17.1 to 18.1 MPa – Condition [L3240, L3540] 175 to 184 kgf/cm • Engine Speed 2480 to 2620 psi [Except L5040 and L5240] Setting Pressure 18.1 to 19.1 MPa...

  • Page 26: Tightening Torques

    LA514, LA724, LA854, WSM FRONT LOADER 3. TIGHTENING TORQUES [LA514] Item N·m kgf·m lbf·ft Boom and bucket cylinder head mounting torque 200 to 230 20.4 to 23.4 148 to 169 Boom and bucket cylinder piston mounting nut 150 to 180 15.3 to 18.3...

  • Page 27: Dismounting Front Loader From Tractor

    LA514, LA724, LA854, WSM FRONT LOADER 4. DISMOUNTING FRONT LOADER FROM TRACTOR IMPORTANT • When dismounting the loader, park the tractor on flat and hard ground, apply the parking brake. • When starting the engine or using the hydraulic control valve, always sit on the operator’s seat.
  • Page 28 LA514, LA724, LA854, WSM FRONT LOADER Hoses 1. Slowly release all hydraulic pressure by moving the hydraulic control lever in all directions. 2. Disconnect the four hoses with quick couplers at the control valve and place them on the right side of the boom.

  • Page 29: Checking, Disassembling And Servicing

    LA514, LA724, LA854, WSM FRONT LOADER 5. CHECKING, DISASSEMBLING AND SERVICING [1] CONTROL VALVE (1) Checking and Adjusting Relief Valve Setting Pressure NOTE • The relief valve is installed on the L40 series tractor. however the relief valve of the tractor hydraulic system is used as the relief valve of the front loader.

  • Page 30: Bucket, Boom And Hydraulic Cylinder

    LA514, LA724, LA854, WSM FRONT LOADER [2] BUCKET, BOOM AND HYDRAULIC CYLINDER (1) Disassembling and Assembling Bucket 1. Remove the pins (2) and remove the bucket (1). (1) Bucket [A] LA514 (2) Pin [B] LA724 and LA854 W1020454 KiSC issued 03, 2007 A...
  • Page 31 LA514, LA724, LA854, WSM FRONT LOADER Hydraulic Cylinders and Hydraulic Hoses 1. Remove the split pin and remove the indicator assy (5). 2. Disconnect the hydraulic hoses (3). 3. Remove the pins and remove the bucket cylinders (4). 4. Disconnect the hydraulic hoses (2).
  • Page 32 LA514, LA724, LA854, WSM FRONT LOADER Piston Rod Assembly 1. Drain hydraulic oil from the cylinder, and secure the tube end of the cylinder in a vise. 2. Unscrew the cylinder head (1) with the adjustable gland nut wrench (4).
  • Page 33 LA514, LA724, LA854, WSM FRONT LOADER Cylinder Head, Piston and Nut 1. Secure the rod end in a vise. 2. Unscrew the nut (4), and remove the piston (3) and cylinder head (2) from the piston rod (1). (When reassembling) •...
  • Page 34 LA514, LA724, LA854, WSM FRONT LOADER Removing Piston Seal and O-ring 1. Remove the piston seal (2) and expander (3) from the piston (1). IMPORTANT • When installing the expander (3) and piston seal (2) to the piston (1), use the slide jig and correcting jig as shown in the figure.

  • Page 35: Servicing

    LA514, LA724, LA854, WSM FRONT LOADER Installing Expander and Piston Seal 1. Place the slide jig (2) on the piston (4). 2. Install the expander (3) on the piston using the slide jig. 3. Install the piston seal (1) over the expander using the slide jig.

  • Page 36: Side Frame And Others

    LA514, LA724, LA854, WSM FRONT LOADER [3] SIDE FRAME AND OTHERS (1) Disassembling and Assembling Side Frame 1. Dismount the loader assembly from loader main frame. (See page S-4.) 2. Remove the pins (1) and remove the side frames (2) from the boom.
  • Page 37 LA514, LA724, LA854, WSM FRONT LOADER Main Frame and Sub Frame (1) Main Frame, RH (2) Sub Frame, RH (3) Sub Frame, LH (4) Main Frame, LH W1025227 1. Support the main frame (1), (4) by hoist to prevent failing during disassembling.
  • Page 38 EDITOR : KUBOTA FARM & INDUSTRIAL MACHINERY SERVICE, LTD. 64, ISHIZU-KITAMACHI, SAKAI-KU, SAKAI-CITY, OSAKA, 590-0823, JAPAN PHONE : ( 81 ) 72-241-1129 : ( 81 ) 72-245-2484 E-mail : ksos-pub@kubota.co.jp KUBOTA Corporation Printed in Japan 2007. 02, S, EI, EI, e Code No.9Y111-00370...

This manual is also suitable for:

La724La854

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