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LA243A
Kubota LA243A User Manual
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FRONT LOADER
BX1870,BX2370,BX2670,LA203A,LA243A,RCK48(P),RCK54(P),RCK60B,RCK60D,RC
K54D, WSM
8-S10
[3] SERVICING
Piston Rod Bend
1.
Place piston rod on V blocks.
2.
Set a dial indicator on the center of the rod.
3.
Turn the piston rod and read the dial indicato
r.
4.
If the measurement exceeds the allowable limit, replace it.
9Y1210855FLS0016US0
Piston rod bend
Allowable limit
0.25 mm
0.0098 in.
KiSC issued 02, 2017 A
415
417
Table of Contents
Information
5
Default Chapter
5
Table of Contents
5
1 Safety First
6
2 Safety Decals
9
Bx Tractor
9
Mower
13
Front Loader
17
3 Specifications
19
Bx Tractor
19
Mower
20
RCK48-18BX, RCK54-23BX, RCK60B-23BX, RCK48P-18BX and RCK54P-23BX
20
RCK54D-26BX and RCK60D-26BX
21
Front Loader
22
4 Traveling Speeds
25
5 Dimensions
26
General
28
1 Identification
30
Tractor Identification
30
Serial Number and Hour Meter
30
Cylinder Number
31
Mower Identification
31
Front Loader Identification
31
2 General Precautions
32
3 Handling Precautions for Electrical Parts and Wiring
33
Wiring
33
Battery
35
Fuse
35
Connector
35
Handling of Circuit Tester
36
Color of Wiring
37
4 Lubricants, Fuel and Coolant
38
BX Tractor
38
Capacity Table
38
Engine Oil, Fuel and Transmission Oil
39
Mower
41
Lubricants
41
Front Loader
41
5 Tightening Torques
42
General Use Screws, Bolts and Nuts (Tractor and Mower
42
General Use Screws, Bolts and Nuts (Front Loader
43
Stud Bolts
43
Metric Screws, Bolts and Nuts
44
American Standard Screws, Bolts and Nuts with Unc or Unf Threads
44
Plugs
44
Hydraulic Fittings
45
Adaptors, Elbows and Others
45
6 Maintenance Check List
46
Bx Tractor
46
Mower
47
Front Loader
48
7 Check and Maintenance
49
Bx Tractor
49
Daily Check
49
Check Points of Initial 50 Hours
50
Check Points of Every 50 Hours
52
Check Points of Every 100 Hours
55
Check Points of Every 200 Hours
60
Check Points of Every 400 Hours
61
Check Point of Every 1000 Hours or 1 Year
63
Check Point of Every 1500 Hours
63
Check Point of Every 800 Hours
63
Check Point of Every 2000 Hours or 2 Years
64
Check Point of Every 3000 Hours
66
Check Point of Every 1 Year
67
Check Points of Every 4 Years
68
Others
69
Mower
71
Check Points of Daily or each Use
71
Check Point of Every 1 Year
75
Check Point of Every 150 Hours
75
Check Point of Initial 50 Hours
75
Check Point of Every 4 Years
76
Front Loader
77
Check Points of each Use or Daily
77
Check Points of Every 10 Hours
77
8 Special Tools
78
Special Tools for Engine
78
Special Tools for Tractor
87
Special Tools for Loader
92
9 Tires
93
Tire Pressure
93
Wheel Tread
94
Front Wheels
94
Rear Wheels
95
Ballast
96
Front Ballast
96
Rear Ballast
97
10 Implement Limitations
98
Servicing
105
1 Troubleshooting
106
2 Servicing Specifications
109
BX1870D (D722-E4) and BX2370D (D902-E4)
109
Bx2670D (D1005-E4)
114
3 Tightening Torques
120
4 Checking, Disassembling and Servicing
122
Checking and Adjusting
122
Engine Body
122
Lubricating System
124
Cooling System
125
Fuel System
127
Disassembling and Assembling
131
Separating Engine
131
Cylinder Head and Valves
134
Removing Outer Parts
134
Gear Case and Timing Gears
138
Piston and Connecting Rod
142
Flywheel and Crankshaft
144
Servicing
146
Cylinder Head and Valves
146
Timing Gears, Camshaft and Governor Gear
154
Piston and Connecting Rod
158
Crankshaft
162
Cylinder
170
Oil Pump
171
Relief Valve Spring
173
Mechanism
175
1 Structure
176
2 Traveling System
177
Hydrostatic Transmission
177
Structure
177
Oil Flow
178
HST Control Linkage
183
Speed Set Linkage
184
Range Gear Shift Section
186
Front Wheel Drive Section
186
Differential Gear Section
187
Differential Gears
187
Differential Lock
188
Brake Section
189
3 Pto System
190
Pto Clutch and Valve
190
MID and Rear Pto Section
193
4 Others
194
Hydraulic Pump Drive Gear Section
194
Servicing
195
Troubleshooting
196
Servicing Specifications
200
Tightening Torques
202
Checking, Disassembling and Servicing
203
Checking and Adjusting
203
Preparation
211
Separating Transaxle
211
Disassembling and Assembling
218
Hydrostatic Transmission
218
Hydraulic Cylinder
224
Transaxle Shafts
225
Assembling Shafts
233
Servicing
235
Hydrostatic Transmission
235
Transaxle Case
237
Servicing
246
Troubleshooting
247
Servicing Specifications
248
Tightening Torques
249
Checking, Disassembling and Servicing
250
Checking and Adjusting
250
Preparation
251
Separating Front Axle Assembly
251
Disassembling and Assembling
254
Front Axle Assembly
254
Servicing
258
Servicing
266
Troubleshooting
267
Servicing Specifications
268
Tightening Torques
269
Checking, Disassembling and Servicing
270
Checking
270
Relief Valve
270
Preparation
270
Separating Power Steering Controller
270
Separating Power Steering Cylinder
272
Disassembling and Assembling
274
Power Steering Cylinder
274
Servicing
275
Hydraulic System
276
Mechanism
277
Hydraulic Circuit
278
Hydraulic Pump
279
Control Valve
280
Flow Priority Valve
283
Relief Valve
284
Hydraulic Cylinder
286
Hydraulic Block Type Outlet
287
Mower Linkage
288
Front Loader Valve
289
Structure
289
Structure for Front Loader Valve and Pipe
289
Structure for Front Loader Control Valve
290
Front Loader Hydraulic Circuit
291
Operation
292
Servicing
299
Troubleshooting
300
Servicing Specifications
301
Tightening Torques
302
Checking, Disassembling and Servicing
303
Checking and Adjusting
303
Relief Valve
303
Pump and Priority Valve
304
Mower Lift Linkage
306
Preparation
307
Separating
310
Hydraulic Cylinder Block
310
Hydraulic Pump
310
Disassembling and Assembling
311
Hydraulic Cylinder and Control Valve
311
Mower Lift Linkage
313
Control Valve (Front Loader)
314
Servicing
317
Hydraulic Pump
317
Hydraulic Cylinder
318
Mechanism
320
1 Wiring Diagram
321
2 Starting System
322
Main Switch Position
322
Safety Switch
323
Operator Presence Control (Opc)
324
3 Charging System
325
Electrical Circuit
325
IC Regulator (3P Connector Type)
326
4 Lighting System
327
5 Gauges
328
Electrical Circuit
328
Hour and Tachometer
329
Fuel Level Gauge
329
Water Temperature Gauge
330
6 Others
331
DC Outlet
331
Servicing
332
1 Troubleshooting
333
2 Servicing Specifications
337
4 Checking, Disassembling and Servicing
339
Checking and Adjusting
339
Battery
339
Main Switch
341
Starter
342
Glow Plug
343
Safety Switch
344
Operator Presence Control (OPC) Switch
346
Fuel Pump
347
Engine Stop Solenoid
348
Timer Relay
348
Charging System
349
Combination Switch
349
Gauge
355
DC Outlet
357
Meter Panel
357
Disassembling and Assembling
360
Starter
360
Alternator
361
Servicing
363
Starter
363
Alternator
365
Servicing
372
2 Servicing Specifications
374
4 Setting up Mower
376
RCK48-18BX, RCK54-23BX, RCK60B-23BX, RCK48P-18BX, and RCK54P-23BX
376
Rck54D-26Bx, Rck60D-26Bx
379
5 Checking and Adjusting
385
Mower Adjustment
385
Checking Mower Blade and Belt
389
6 Disassembling and Servicing
392
Disassembling and Assembling
392
Servicing Specifications
408
Disassembling and Servicing
410
Dismounting and Mounting Front Loader
410
Dismounting Front Loader from Tractor
410
Mounting Front Loader to Tractor
411
Bucket, Boom and Hydraulic Cylinders
412
Front Loader
412
Side Frames, Front Guard and Main Frames
415
Servicing
416
5
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Kubota LA243A Specifications
General
Brand
Kubota
Model
LA243A
Category
Front End Loaders
Language
English
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