KUBOTA FRONT END Loader LA480 LA680 LA481 LA681 LA852 Workshop Service Manual

SAFETY INSTRUCTIONS LA480· LA680· LA481 • LA681 • LA852 WSM. 17001 ~HH/////////////H///////H/////////////H///////HHH///H/////H/////////////////////////////H//////////////////////////H/H~ ~ A SAFETY FIRST ~ ~ ~ ~ This symbol, the industry's "Safety Alert Symbol", is used throughout this manual and decals on ~ ~ the machine itself to warn of the possibility of personal injury. Read these instructions carefully. ~ ~ It is essential that you read the Instructions and safety regulations before you attempt to repair or ~ ~ use this unit. ~ ~///HHH////////H///H/////////////HH//H/H///HH/H/H/HH//////HH/////H///H//////////H////H/H///////H/HHH/H/~ A DANGER : Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. A WARNING: Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. A CAUTION : Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. • IMPORTANT : Indicates that equipment or property damage could result if instructions are not followed. : Gives helpful information. I OOOOOZOOO10 OOOOOF00010 BEFORE SERVICING AND REPAIRING (1) Read all instructions and safety instructions in this manual and on your machine safety decals. (2) Clean the work area and machine. (3) Park the machine on a firm and level ground, and set the parking brake. (4) Lower the implement to the ground. (5) Stop the engine, and remove the key. (6) Disconnect the battery negative cable. (7) Hang a "DO NOT OPERATE" tag in operator station. OOOOOZ00020 1

LA480 °LA680 °LA481 -LA681 • LA852 WSM, 17001 SAFETY INSTRUCTIONS OOOOOF00020 OOOOOF00030 SAFETY STARTING (1) Do not start the engine by shorting across starter terminals or bypassing the safety start switch. (2) Do not alter or remove any part of machine safety system. (3) Before starting the engine, make sure that all shift levers are in neutral positions or in disengaged positions. (4) Never start the engine while standing on ground. Start the engine only from operator's seat. OOOOOZ00030 SAFETY WORKING (1) Do not work on the machine while under the influence of alcohol, medication, or other substances or while fatigued. (2) Wear close fitting clothing and safety equipment appropriate to the job. (3) Use tools appropriate to the work. Makeshift tools, parts, and procedures are not recommended. (4) When servicing is performed together by two or more persons, take care to perform all work safely. (5) Do not work under the machine that is supported solely by a jack. Always support the machine by safety stands. (6) Do not touch the rotating or hot parts while the engine is running. (7) Never remove the radiator cap while the engine is running, or immediately after stopping. Otherwise, hot water will spout out from radiator. Only remove radiator cap when cool enough to touch with bare hands. Slowly loosen the cap to first stop to relieve pressure before removing completely. (8) Escaping fluid (fuel or hydraulic oil) under pressure can penetrate the skin causing serious injury. Relieve pressure before disconnecting hydraulic or fuel lines. Tighten all connections before applying pressure. OOOOOZ00040 AVOID FIRES (1) Fuel is extremely flammable and explosive under certain conditions. Do not smoke or allow flames or • + - sparks in your working area. (2) To avoid sparks from an accidental short circuit, always disconnect the battery negative cable first and connect it last. (3) Battery gas can explode. Keep sparks and open flame away from the top of battery, especially when charging the battery. (4) Make sure that no fuel has been spilled on the engine. OOOOOF00050 OOOOOZOO050 2

SAFETY INSTRUCTIONS LA480· LA680· LA481 • LA681 • LA852 WSM, 17001 •• "', • _.·-~vl 00 •• - o~ .-e OOOOOF00070 OOOOOF00090 VENTILATE WORK AREA (1) 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. OOOOOZOOO60 PREVENT ACID BURNS (1) Sulfuric acid in battery electrolyte is poisonous. It is strong enough to burn skin, clothing and cause blindness if splashed into eyes. Keep electrolyte away from eyes, hands and clothing. If you spill electrolyte on yourself, flush with water, and get medical attention immediately . OOOOOZOOO70 DISPOSE OF FLUIDS PROPERLY (1) Do not pour fluids into the ground, down a drain, or into a stream, pond, or lake. Observe relevant environmental protection regulations when disposing of oil, fuel, coolant, electrolyte and other harmful waste. OOOOOZ00080 PREPARE FOR EMERGENCIES (1) Keep a first aid kit and fire extinguisher handy at all times. (2) Keep emergency numbers for doctors, ambulance service, hospital and fire department near your telephone. OOOOOZOO090 3

LA480' LAS80' LA481 • LA681 • LA852 WSM, 17001 SAFETY INSTRUCTIONS SAFETY DECALS I I • 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. (AWARNING' : l. 00 N)1 stand or lifO/it undtr rttse-d loed~, Of blJcktl 1. DO N01 us. load., a, a work plat rora. I. HEYER CQl'Ifttct ctl!l I 1'1. tahie (f fOPt to I •• bucket wh}la. oP~allns toader. (4) Part No. 75546-56431 (1) Part No. 75546-56441 (2) Part No. 75546-56451 (3) Part No. 75546-56415 (5) Part No. 75567-56422 A DANGER· (6) Part No. 75546-56471 r aCAUT ION': ~ TO AVOID PERSONAL INJURY • KefP hand awelJ fT_ loader, when !)OCrat i "S- ) ACAUTION TO AVOID PERSONRL INJURY : I. Obnr",e u(el~ "recatJtlOt"Ii In loeder and ,racto!' Operator's Hanual. ,. Operale the loader hOllt tractor Hat or\I~. 1. Keep children. Others and l,vnlodt IWlIo; when OperU- In, )Oider and "'.clOt. 4, tI ... oid hales. lao'U' !raund, and rOCks will ch Q'j taun tt.lCl/7 I loadrT totHl, S. \Shen Arktnlj Or tl(lrlnq. choose f I.t ,nd hard grCUld. lower the bucket to the 'lround. nt braices and rellOye keli before lta'f'lng trector. 6. 8elore di1rOl'iMcu~ hIp'.u- Ii! IlIvs. Hlinor .11 ¥,.vltc ptl!'S:1ur e, I. lQld on T.ned bJck~1 or f(J'k c.n riJll fl( roll b.1clt onto oper'-lor C'-usIng ur .OU'i Injur'l Dr deuh. 2· U'tt approved cliWtPln9 iIIr\d lor guard altilc~nlS for hand I inq I.-rqe. loon Ot shlhiblt IGilds such it bilts. P1Slt. shetls 01 pl'ftOOd etc. ~. Wflf I.ds is tAl n possible. A DANGER" il~ TO AVOlO Sl'R [OUS INJIJIY OR DEATH CAUSED BY ROLLOVERS l. i{f"S and a fnttntd s,rat btl! 1ft sttOt'llJ1,; aCQlRUndrd In Jla»! all iP9IICilloni fol~lt f((fS ~Id bt It'! ~r 19b! .and Ifda! 1IG~I{jon If ton»rd' 2, Adjust rur wt\ttl~ !D tnt wuirs, seUHI, thai I~ sUitable for Uw: '01".11;. 3, Add rf'COf1IIIIIf'nded whet' I balla-sl or rtar wtPJht fot uablllt'J. ,. IXlt()I ,,"lye on ntt" slOl)ts or unSlabl1!' surfaers. S. Carr~ loa-der IrlU a~ low pOSition <J.rLnS H,nsPQf"l. t10Ye and lurn tractor al stau spreds, CARE OF DANGER, WARNING AND CAUTION LABELS 1. Keep danger, warning and caution labels clean and free from obstructing material. 2. Clean danger, warning and caution labels with soap and water, dry with a soft cloth. 3. Replace damaged or missing danger, warning and caution labels with new labels from your local KUBOTA Dealer. 4. If a component with danger. warning and caution label (s) affixed is replaced with new part, make sure new label (s) is (are) attached in the same locations (s) as the replaced component. 5. Mount new danger, warning and caution labels by applying on a clean dry surface and pressing any bubbles to outside edge. 17001 F00010 17001Z00020 4

SAFETY INSTRUCTIONS LA480· LA680 • LA481 • LA681 • LA8S2 WSM, 17001 (1) Part No. 75546-56441 rAWARNINGI ~~t;l~ 10 AVOID INJURY FROM FALLS OR BEING CRUSHED I. 00 t()T tlind or worlc. Wflder raIsed ioeder or buckel. 1. DO NOT use loa de' as • worlt plufor •. 3. HEYER connect (,,,,In, Clblt 1.7 tClPf 10 10I«r btrlel while:. oprral i n9 I oadlT. (4) Part No. 75546-56431 (6) Part No. 75546-56471 ACAUTION TO AVOID PERSONAL INJURY • Kup hand awa~ rrDIIIII loedtr wn ooerating. '" (2) Part No. 75546-56451 ACAUTION TO AVOID PERSONAl INJURY : I. Otau,,! Uftt'j prtClhJ\lons In loader and treClor Ol:teralor'~ lolanual. 2. OPI!'Tollt t~ loader frQIII tractor nat onl";:l_ 3. Krl'P children. others and I f';lUIGd\ tW'l';f wbtl'! OPftU- lI't Jotde:r .Ad It,,tor, 4. $ly(lld heles. loou 9routtd. .nc:! rocks 1.Ir.ICh .,~ ('USt ttlU(J I tOidrr U, lIP. S. When par!."ng 0' storing. rhoon 011 II'Id hard grt»..ftJ. Low!!'t lhe: buCkt't lo tht ground. 1~t brakes and 'tllO""! Ict'J be' ore IU'¥ing tractor. 6. StlfSf di1COMtCtl~ ~iU- lie linn, rrlif'Vt ,II "'PliIllc presSur!:. (5) Part No. 75567-56422 ,A DANGER I. laid Oft rJlstd brl:tt or h.-k u,n rail or roll baCk onlo CO-trat or CiuSlnC) ur IOUS InjUflj or death. 1. Un l{lprcvtd claalung and I Of gvar d a l U (hilenU for handling largr. loose or idIlhJblr 100as such itS boIles. poUs. shtets 01 ptlJlilOGd etc· ~. UHli 11ad'S IS low IS possible. L RCf'S and- a lutl!:nto nat btlt art: '1tto.!u}I'j rrCCllllltndfd In ll.o'll III .t"lu:ati~. FollSiblf R(f'S should bf In upr ~ght Ind Itdltd POllllDO Ii t.uJl9l'd. t. AciJlIS{ ((ar wfifrlt Ie lhe wlOc!n nUln9 that IS sI.1I1abie far the work. ). Add r eCcrMlended whee I ballan or rtar wf:n9~'Il rOf' stibl I Jt9· 4. OO.oT .'Vf on steep '!.I(!pts or unst.bit svrfacn. S. Carr'J loader .r.s at low posiUQn GTln, ltIIlSPU(. Hovt Ind llJ"1I tractor .it slOol speeds. CARE OF DANGER, WARNING AND CAUTION LABELS 1. Keep danger, warning and caution labels clean and free from obstructing material. 2. Clean danger, warning and caution labels with soap and water, dry with a soft cloth. 3. Replace damaged or missing danger, warning and caution labels with new labels from your local KUBOTA Dealer. 4. If a component with danger. warning and caution label (s) affixed is replaced with new part. make sure new label (s) is (are) attached in the same locations (s) as the replaced component. 5. Mount new danger, warning and caution labels by applying on a clean dry surface and pressing any bubbles to outside edge. 17001F00180 17001Z00030 5

LA480 .LA680 .LA481 ·LA681 • LA852 WSM, 17001 SAFETY INSTRUCTIONS SPECIFICATIONS LOADER SPECIFICATIONS Model LA480, LA481 LA680,LA681 ASAE Rated Lift Capacity 480 kg (1058 Ibs.) 680 kg (1499 Ibs.) ASAE Rated Brakeout Force 885 kg (1951 Ibs.) 1160 kg (2557Ibs.) Boom Cylinder Bore 45 mm (1.75 in.) 50 mm (2.00 in.) Stroke 450 mm (17.72 in.) 485 mm (19.10 in.) Bucket Cylinder Bore 45 mm (1.75 in.) 50 mm (2.00 in.) Stroke 450 mm (17.72 in.) 450 mm (17.72 in.) Control Valve Standard valve type One Detent Float Position, Power Beyond Circuit Remote valve type One Detent Float Position, Two Stage Bucket Dump, Power Beyond Circuit Net Weight (Approx.) 380 kg (835 Ibs.) 440 kg (970 Ibs.) BUCKET SPECIFICATIONS Model LA480,LA481 LA680,LA681 LA480, LA481 LA680, LA681 I Type Square 60" Square 60" HD Round 60" Width 1524 mm (60.0 in.) 1524 mm (60.0 in.) 1524 mm (60.0 in.) Length 518 mm (20.4 in.) 568 mm (22.4 in.) 525 mm (20.7 in.) Height 530 mm (20.9 in.) 530 mm (20.9 in.) 603 mm (23.8 in.) Capacity Struck 0.23 m 3 (8.1 cu.ft.) 0.25 m 3 (8.8 cu.ft.) 0.24 m 3 (8.5 cu.ft.) Heaped 0.28 m 3 (9.9 cu.ft.) 0.31 m 3 (10.9 cu.ft.) 0.30 m 3 (10.6 cu.ft.) Weight 96 kg (212 Ibs.) 112 kg (247 Ibs.) 139 kg (308 Ibs.) 17000Z00040 6

SAFETY INSTRUCTIONS LA480· LA680· LA481 • LA681 • LA852 WSM, 17001 OPERATING DIMENSIONS ~I Item Maximum Lifting Height (A) Clearance with Bucket Dumped (B) Reach at Maximum Height (C) Maximum Dump Angle (D) Reach with Bucket on Ground (E) LA480 LA481 LA680 LA681 I L2900 I L3300 L3010 I L3410 2470 mm (97.2 in.) 1940 mm (76.4 in.) 670mm 550mm (26.4 in.) (21.7 in.) 41 deg. 1570 mm (61.8 in.) L3600 I L4200 L3710 I L431 0 2600 mm (102.4 in.) 2040 mm (80.3 in.) 735mm 595mm (28.9 in.) (23.4 in.) 40 deg. 1690 mm (66.5 in.) ! i Bucket Roll-back Angle (F) 20 deg. 23 deg. Digging Depth (G) 100 mm (3.9 in.) 140 mm (5.5 in.) Overall Height in Carrying • Position (H) 1325 mm (51.6 in.) 1380 mm (54.3 in.) , L2900 and L3010 (4WD) With 7.2 16 Front Tires and 12.4 - 24 Rear Tires. L3300 and L3410 (4WD) with 7.2 -16 Front Tires and 12.4 - 24 Rear Tires. L3600 and L3710 (4WD) with 8.3 - 16 Front Tires and 14.9 - 24 Rear Tires. L4200 and L431 0 (4WD) with 8.3 - 16 Front Tires and 14.9 - 24 Rear Tires. -'. _w"" .. --.-- ____ ·i '_:;:~~(~~ ~ :::' ': . ...... A B H .. . ', I;· \ 12210F00030 17000Z00050 PERFORMANCE RATINGS (NO LOAD) !~I Item LA480 LA481 LA680 LA681 L2900 I L3300 L301 0 I L3410 L3600 I L4200 L3710 I L4310 Raise to Full Height i 3.2 sec. 4.1 sec. 3.8 sec. Lowering Time 1.8 sec. 2.6 sec. 2.3 sec. Attachment Roll-back Time 2.3 sec. 2.4 sec. Attachment Dump Time 1.6 sec. 1.5 sec. 1.8 sec. 1.7 sec. 17000Z00060 7

LA480 • LA680 • LA481 • LA681 • LA852 WSM, 17001 SAFETY INSTRUCTIONS SPECIFICATIONS LOADER SPECIFICATIONS • Loader model LAB52 Tractor model L461 0 Wheel base (WB) 1815 mm (71.5 in.) Front tires 8.3-16 Rear tires 14.9-24 Boom Cylinder Bore 57.2mm (2-1/4) Stroke 518 mm (20.4 in.) Bucket Cylinder Bore 57.2mm (2-1/4) Stroke 470 mm (18.5 in.) Control Valve One Detent Float Position, Power Beyond Circuit Rated flow 36.4 Urn (9.6 GPM) Maximum pressure lBO kg/cm 2 (2560 psi) Net Weight (Approx.) 550 kg (1213 Ibs.) BUCKET SPECIFICATIONS Loader model LA852 Model Square 72 Width 1830 mm (72.0 in.) Depth (L) 575 mm (22.6 in.) Height (M) 540 mm (21.3 in.) Length (N) 670 mm (26.4 in.) Capacity Struck 0.30 m 3 (10.6 cu.ft.) Heaped 0.38 m 3 (13.4 cu.ft.) Weight 136 kg (300 Ibs.) DIMENSIONAL SPECIFICATIONS I Loader model LAB52 (A) Maximum lift height to pivot pin 2750 mm (1 OB.3 in.) (8) Maximum lift height under level bucket 2575 mm (101.4 in.) I (C) Clearance with bucket dumped 2150 mm (84.6 in.) (D) Reach at maximum lift height 470 mm (18.5 in.) (E) Maximum dump angle 45 deg. (F) Reach with bucket on ground 1735 mm (68.3 in.) (G) Bucket roll-back angle 35 deg. (H) Digging depth 125 mm (4.9 in.) (J) Overall height in carrying position 1400 mm (55.1 in.) L461 0 (4WD) with 8.3 - 16 Front Tires and 14.9 - 24 Rear Tires. 17001Z00060 8

SAFETY INSTRUCTIONS LA480· LA680· LA481 • LA681 • LA852 WSM. 17001 OPERATIONAL SPECIFICATIONS Loader model LA852 Lift capacity to maximum height (Bucket bottom mid point) 850 kg (1875Ibs.) (U) Lift capacity to maximum height-at pivot pin 1120 N (2470 Ibs.) (V) Lift capacity to maximum height 830 N (1830 tbs.) (W) Lift capacity to 1.5 m (59 in.) height-at pivot pin 1330 N (2930 Ibs.) (X) Lift capacity to 1.5 m (59 in.) height 1065 N (2350 Ibs.) (Y) Breakout force-at pivot pin 17750 N (3990 Ibs.) (Z) Breakout force 13590 N (3055 Ibs.) (VV) Bucket rollback force at maximum height 14960 N (3360Ibs.) (XX) Bucket rollback force at 1.5 m (59 in.) lift height 22360 N (5025 Ibs.) (ZZ) Bucket rollback force at ground line 21570 N (4850 Ibs.) Raising time 4.3 sec. Lowering time 2.7 sec. Bucket dumping time 2.0 sec. Bucket rollback time 2.8 sec. L ~v ~ B A C 4'1 w X y Z Lift Capacity Bucket Rollback Force \ \ \ '" ~ ~ 3000 3000 2500 2500 2000 2000 E E g g .E 1500 I 1500 .E Cl C> 'iii 'iii J: 1000 J: 1000 500 500 o o i I ~ ~ ~ \ ) i / 500 1000 1500 2000 10 15 20 25 30 Lift Capacity (kg) Rollback Force (KN) 17001 F00040 17001Z00070 9

LA480· LA680· LA481 • LA681 • LA852 WSM, 17001 SAFETY INSTRUCTIONS TERMINOLOGY [LA480· LA680· LA481 . LA681] 10i (1) Bucket Cylinder (2) Boom (3) Hydraulic Control Valve (7) Mounting Pin for Brace (10) Brace (8) Bucket (11) Brace Support (9) Boom Cylinder 17001 Z00040 [LA852] (4) Side Frame (5) Mounting Pin for Side Frame (6) Main Frame •17001 F00030 (1) Bucket Cylinder (3) Hydraulic Control Valve (5) Mounting Pin for Side Frame (7) Bucket (2) Boom (4) Side Frame (6) Main Frame (8) Boom Cylinder 17001Z00050 10

KUBOTA FRONT END Loader LA480 LA680 LA481 LA681 LA852 Workshop Service Manual

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