Kubota K008-3 U10-3 Excavator Workshop Manual – PDF DOWNLOAD
DESCRIPTION:
Kubota K008-3 U10-3 Excavator Workshop Manual – PDF DOWNLOAD
a. Safety Measures before Starting Work
(1)Work clothes
1. Wear specified work cap and clothed.
(Under no circumstances may workers wear
undershirts only.)
Cuffs must be kept buttoned, and any tears
must be mended.)
2. Wear safety shoes.
3. Do not wear cotton gloves when working on
the internal section of engine, reduction
gears or hydrauricunits for repair or others,
or when using a hammer. Wear leather
gloves, however, when hoisting wires.
(2)Inspecting equipment and tools
1. Prepare equipment (cranes, fork lifts, tool,
etc.) required for servicing and inspect for
any problems before starting work.
2. Hammer heads (metal parts) must be firmly
secured to their handles.
3. Check hosting tools (wire ropes, hoisting
chains, etc.) before use.
(3)Keep workshop in order
1. Secure appropriate space needed for disassembly
to the job.
2. Secure a clean, safe place for arranging disassembled
parts.
3. Store volatile substances (gasoline, light oil,
thinner, oily articles, etc.) in appropriate containers
at selected locations to prevent fire
hazards.
TABLE OF CONTENTS:
Kubota K008-3 U10-3 Excavator Workshop Manual – PDF DOWNLOAD
WSM_K008-3_U10-3………………………………………………….. 1
CONTENTS……………………………………………………… 3
I.GENERAL…………………………………………………….. 4
A. BODY AND ENGINE IDENTIFICATION MARKS………………………. 5
B. SAFETY PRECAUTIONS FOR SERVICING, DISASSEMBLY AND REASSEMBLY…. 7
a. Safety Measures before Starting Work…………………… 7
b. Safety Measures during Work…………………………… 7
c. Preparation for Disassembly…………………………… 8
d. Precautions for Disassembly and Reassembly……………… 8
e. Maintenance…………………………………………. 8
f. Waste Disposal………………………………………. 8
C. IMPORTANT SAFETY PROCESS AND CRITICAL FUNCTIONAL PROCESS…….. 9
a. Essential Adhesives………………………………….. 9
b. Important Safety Process……………………………… 9
c. Important Critical Functional Process………………….. 9
D. IMPORTANT INSPECTION ITEMS AFTER REASSEMBLING………………. 11
E. SERVICING FUNDAMENTALS…………………………………… 13
a. Items for Servicing………………………………….. 13
b. O-ring, Oil Seal, Circlip and Roll Pin…………………. 15
c. Piping……………………………………………… 17
F. MACHINE QUALITY SPECIFICATIONS……………………………. 23
a. K008-3, U10-3 EU-Version……………………………… 23
b. K008-3 KTC, KCL, KTA-Version………………………….. 28
G. MAINTENANCE INTERVALS……………………………………. 35
a. K008-3, U10-3 EU-version……………………………… 35
b. K008-3, U10-3 KTC, KCL-Version………………………… 36
c. K008-3, U10-3 KTA-Version…………………………….. 37
d. Periodic Replacement of Important Component Parts……….. 38
e. Hydraulic Oil Check for Machines with Hydraulic Breakers…. 39
H. SUMMARY OF MINOR CHANGE CONTENTS………………………….. 41
a. Development Background……………………………….. 41
b. Meeting the EU Safety Regulation………………………. 41
c. Main Items of Minor Change……………………………. 42
d. Main Performance Specifications and Comparison………….. 43
II.MACHINE BODY (Mechanism Section)……………………………… 47
A. SPECIFICATIONS………………………………………….. 49
a. EU-Version………………………………………….. 49
b. KTC, KCL, KTA-Version………………………………… 50
c. EU-Version, Minor Change……………………………… 51
B. COMPONENT INTERCHANGEABILITY……………………………… 11
a. Bucket……………………………………………… 11
C. MACHINE STRUCTURE……………………………………….. 55
a. Control Linkage……………………………………… 55
b. Engine Mount………………………………………… 60
c. Undercarriage……………………………………….. 61
II.MACHINE BODY (Service Section)……………………………….. 65
A. SPECIFICATIONS………………………………………….. 67
a. Machine Weight………………………………………. 67
b. Machine Specifications……………………………….. 68
c. Lever Stroke and Operating Force………………………. 70
d. Dimensions of Parts………………………………….. 72
B. FRONT ATTACHMENT………………………………………… 81
a. Front Attachment Assembly Procedure……………………. 81
b. Greasing Points……………………………………… 84
c. Shim Adjustment……………………………………… 85
C. UPPER STRUCTURE…………………………………………. 87
a. Operating Unit………………………………………. 87
b. Dozer Lever…………………………………………. 93
c. Swing Pedal…………………………………………. 95
d. Service Port Pedal…………………………………… 97
e. TPSS (Two Pattern Selection System)…………………….100
f. Weight………………………………………………103
g. ROPS (Rear Mount Type)………………………………..105
h. Seat Belt Setup Angle (Rear Mount Type)…………………108
i. ROPS (Front Mount Type) (EU-Version)……………………109
j. Seat Belt (EU-Version)………………………………..111
D. UNDERCARRIAGE……………………………………………113
a. Swivel Bearing……………………………………….113
b. Traveling Unit……………………………………….117
c. Drive Sprocket……………………………………….121
d. Track Frame (Retractable – version)…………………….122
III.ENGINE (Mechanism Section)…………………………………..127
A. SAFETY FIRST…………………………………………….129
B. ENGINE SPECIFICATIONS FOR CONSTRUCTION MACHINERY…………….131
C. ENGINE ELECTRIC COMPONENTS………………………………..133
D. ENGINE CHANGE FOR EPA EMISSION CONTROL……………………..135
E. PERFORMANCE CURVE………………………………………..137
F. DIMENSION……………………………………………….139
III.ENGINE (Service Section)…………………………………….165
A. TANK……………………………………………………167
B. ENGINE MOUNT ON THE MACHINE……………………………….175
C. GENERAL…………………………………………………177
IV.HYDRAULIC SYSTEM (Mechanism Section)…………………………..245
A. MAIN PUMP (K008-3, U10-3)…………………………………247
B. PILOT PUMP (U10-3)……………………………………….249
C. CONTROL VALVE……………………………………………251
a. Specifications……………………………………….251
b. General View of Control Valve………………………….253
c. Sectional View……………………………………….257
d. Structure and Function………………………………..269
D. PILOT VALVE……………………………………………..271
a. Structure……………………………………………271
b. Pilot Valve Control Diagram……………………………273
c. Function…………………………………………….274
E. HYDRAULIC PILOT CIRCUIT…………………………………..277
a. Oil Flow when the Control Lever is Locked (A)……………278
b. Oil Flow when the Control Lever is Locked (B)……………280
c. Oil Flow in Boom Lifting Operation……………………..282
d. Oil Flow in Bucket Dumping Operation……………………284
e. Oil Flow in Arm Crowding Operation……………………..286
f. Oil Flow in Right Swivel Operation……………………..288
F. SWIVEL MOTOR (K008-3, U10-3)………………………………291
a. Structure and Specifications…………………………..291
b. Operating Principle…………………………………..293
G. ROTARY JOINT (SWIVEL JOINT)……………………………….295
H. TRAVEL MOTOR…………………………………………….297
a. Single Speed Motor (K008, EU-Version)…………………..297
b. Two Speed Motor………………………………………300
I. ORBITROL MOTOR: STRUCTURE & FUNCTION……………………….303
a. Basic Function……………………………………….303
b. Structure & Function: Shaft Output Type…………………305
c. Structure & Function: Ring Output Type………………….314
J. HYDRAULIC CIRCUIT DIAGRAM…………………………………325
a. K008-3: Travel 1st Speed Type………………………….325
b. K008-3: Travel 2nd Speed Type………………………….326
c. U10-3: Travel 1st Speed Type…………………………..327
d. U10-3: Travel 2nd Speed Type…………………………..328
e. Hydraulic Components Layout: K008-3…………………….329
IV.HYDRAULIC SYSTEM (Service Section)…………………………….331
A. TROUBLESHOOTING………………………………………….333
a. Machine General………………………………………333
b. Hydraulic System……………………………………..336
B. SPECIFICATIONS…………………………………………..341
a. Pump System………………………………………….341
b. List of Relief Valves…………………………………343
c. Noise……………………………………………….344
d. Swivel System………………………………………..345
e. Traveling System……………………………………..346
f. Cylinder System………………………………………347
C. TESTING…………………………………………………351
a. Pump Flow Test……………………………………….351
b. Pilot Pressure (U10-3)………………………………..352
c. Main Relief Valve Pressure…………………………….353
d. Operating Speed………………………………………354
e. Travel Straightness Measurement Test……………………357
f. Traveling Motor Block Performance………………………357
g. Swivel Motor Block Performance…………………………358
h. Cylinder Natural Fall Amount…………………………..358
i. Control and Traveling Lever Operating Force……………..359
j. Lever Stroke…………………………………………359
D. DISASSEMBLING AND ASSEMBLING………………………………361
a. Pump Coupling………………………………………..361
b. Pump………………………………………………..362
c. Control Valve………………………………………..367
d. Pilot Valve………………………………………….370
e. U10-3 Component Parts of Hydraulic Operating Unit………..371
f. Pilot Valve………………………………………….376
g. Swivel Motor…………………………………………390
h. Swivel Joint…………………………………………402
i. Wheel Motor………………………………………….406
j. Cylinder…………………………………………….423
k. Route of Hydraulic Hose……………………………….429
l. Accumulator………………………………………….438
m. Tank………………………………………………..439
n. Service Port Operation………………………………..440
V.ELECTRICAL SYSTEM (Service Section)…………………………….443
A. WIRING DIAGRAM…………………………………………..445
a. K008-3, U10-3………………………………………..445
b. Wiring Diagram, K008-3, U10-3………………………….446
B. ELECTRIC WIRING………………………………………….447
a. Cautions on Electric Wire Clamping Method……………….447
b. Harness Route………………………………………..447
C. TROUBLESHOOTING OF ELECTRIC SYSTEM…………………………455
a. Outline of Troubleshooting…………………………….455
b. Cautions in General…………………………………..456
c. Troubleshooting………………………………………461
d. Checking Procedure……………………………………463
Conversion Tables………………………………………………477
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