Komatsu PC24MR-5 PC26MR-5 Compact Hydraulic Excavator Shop Manual SEN06893-00 – PDF DOWNLOAD

Komatsu PC24MR-5 PC26MR-5 Compact Hydraulic Excavator Shop Manual SEN06893-00 – PDF DOWNLOAD

FILE DETAILS:

Komatsu PC24MR-5 PC26MR-5 Compact Hydraulic Excavator Shop Manual SEN06893-00 – PDF DOWNLOAD

Language : English
Pages : 1076
Downloadable : Yes
File Type : PDF
Size: 87.4 MB

TABLE OF CONTENTS:

Komatsu PC24MR-5 PC26MR-5 Compact Hydraulic Excavator Shop Manual SEN06893-00 – PDF DOWNLOAD

00 INDEX AND FOREWORD 00-1
FOREWORD, SAFETY, BASIC INFORMATION 00-9
HOW TO READ THE SHOP MANUAL 00-9
SAFETY NOTICE FOR OPERATION 00-11
PRECAUTIONS TO PREVENT FIRE 00-19
ACTIONS IF FIRE OCCURS 00-21
PRECAUTIONS WHEN YOU DISPOSE OF WASTE MATERIALS 00-22
PRECAUTIONS FOR HANDLING HYDRAULIC EQUIPMENT 00-23
PRECAUTIONS WHEN YOU DISCONNECT AND CONNECT PIPINGS 00-26
PRECAUTIONS WHEN YOU HANDLE ELECTRICAL EQUIPMENT 00-33
PRECAUTIONS FOR HANDLING FUEL SYSTEM EQUIPMENT 00-35
PRECAUTIONS FOR HANDLING INTAKE SYSTEM EQUIPMENT 00-36
PRACTICAL USE OF KOMTRAX 00-37
DISCONNECT AND CONNECT PUSH-PULL TYPE COUPLER 00-38
PRECAUTIONS FOR DISCONNECTION AND CONNECTION OF CONNECTORS 00-42
METHOD FOR DISCONNECTING AND CONNECTING DEUTSCH CONNECTOR 00-46
METHOD FOR DISCONNECTING AND CONNECTING SLIDE LOCK TYPE CONNECTOR 00-47
METHOD FOR DISCONNECTING AND CONNECTING CONNECTOR WITH LOCK TO PULL 00-49
METHOD FOR DISCONNECTING AND CONNECTING CONNECTOR WITH LOCK TO PUSH 00-50
METHOD FOR DISCONNECTING AND CONNECTING CONNECTOR WITH HOUSING TO ROTATE
00-52
STANDARD TIGHTENING TORQUE TABLE 00-53
CONVERSION TABLE 00-60
ABBREVIATION LIST 00-65
01 SPECIFICATION 01-1
CONTENTS 01-2
SPECIFICATIONS 01-3
SPECIFICATION DRAWING 01-3
WORKING RANGE DRAWINGS 01-7
SPECIFICATIONS 01-9
WEIGHT TABLE 01-19
FUEL, COOLANT, LUBRICANT 01-23
10 STRUCTURE AND FUNCTION 10-1
CONTENTS 10-2
BOOT-UP SYSTEM 10-4
LAYOUT DRAWING OF BOOT-UP SYSTEM 10-4
SYSTEM OPERATING LAMP SYSTEM 10-5
BATTERY DISCONNECT SWITCH 10-7
ENGINE SYSTEM 10-8
LAYOUT DRAWING OF ENGINE SYSTEM 10-8
ENGINE CONTROL SYSTEM 10-9
ENGINE SYSTEM 10-11
COOLING SYSTEM 10-12
LAYOUT DRAWING OF COOLING SYSTEM 10-12
CONTROL SYSTEM 10-14
LAYOUT DRAWING OF CONTROL SYSTEM 10-14
MACHINE MONITOR SYSTEM 10-15
KOMTRAX SYSTEM 10-16
CONTROL SYSTEM 10-17
HYDRAULIC SYSTEM 10-28
LAYOUT DRAWING OF HYDRAULIC SYSTEM 10-28
CLSS 10-29
HYDRAULIC SYSTEM 10-32
WORK EQUIPMENT SYSTEM 10-70
LAYOUT DRAWING OF WORK EQUIPMENT SYSTEM 10-70
STRUCTURE OF VALVE CONTROL 10-73
INDEX 00 INDEX AND FOREWORD
00-2 PC24MR-5, PC26MR-5
PPC LOCK SYSTEM 10-75
WORK EQUIPMENT DOUBLE LOCK SYSTEM 10-77
WORK EQUIPMENT SYSTEM 10-78
SWING SYSTEM 10-103
LAYOUT DRAWING OF SWING SYSTEM 10-103
SWING SYSTEM 10-104
TRAVEL SYSTEM 10-117
LAYOUT DRAWING OF TRAVEL SYSTEM 10-117
SYSTEM DIAGRAM OF TRAVEL CONTROL SYSTEM 10-119
TRAVEL SYSTEM 10-121
UNDERCARRIAGE AND FRAME 10-138
LAYOUT DRAWING OF UNDERCARRIAGE 10-138
SPECIFICATIONS OF UNDERCARRIAGE 10-140
IDLER CUSHION 10-141
WORK EQUIPMENT 10-144
STRUCTURE OF WORK EQUIPMENT 10-144
FUNCTION OF WORK EQUIPMENT 10-145
WORK EQUIPMENT CLEARANCE ADJUSTMENT SHIM 10-146
CAB RELATED PARTS 10-147
ROPS CAB 10-147
20 STANDARD VALUE TABLE 20-1
CONTENTS 20-2
STANDARD VALUE TABLE FOR ENGINE 20-3
STANDARD VALUE TABLE FOR ENGINE: PC24MR-5 20-3
STANDARD VALUE TABLE FOR ENGINE: PC26MR-5 20-5
STANDARD VALUE TABLE FOR MACHINE 20-7
STANDARD VALUE TABLE FOR MACHINE: PC24MR-5 20-7
STANDARD VALUE TABLE FOR MACHINE: PC26MR-5 20-17
GEAR PUMP: PC24MR-5 20-27
PISTON PUMP: PC24MR-5 20-28
GEAR PUMP: PC26MR-5 20-29
PISTON PUMP: PC26MR-5 20-30
MACHINE POSTURE AND PROCEDURES TO MEASURE PERFORMANCE 20-31
30 TESTING AND ADJUSTING 30-1
CONTENTS 30-2
RELATED INFORMATION ON TESTING AND ADJUSTING 30-4
TOOLS FOR TESTING AND ADJUSTING 30-4
ENGINE AND COOLING SYSTEM 30-8
TEST ENGINE SPEED 30-8
TEST EXHAUST GAS COLOR 30-13
CHECK AND ADJUST VALVE CLEARANCE 30-16
TEST COMPRESSION PRESSURE 30-20
TEST ENGINE OIL PRESSURE 30-24
TEST AND ADJUST FUEL INJECTION TIMING 30-26
BLEED AIR FROM FUEL SYSTEM 30-29
TEST FUEL CIRCUIT FOR LEAKAGE 30-30
TEST AND ADJUST ALTERNATOR BELT TENSION 30-31
POWER TRAIN 30-33
TEST SWING CIRCLE BEARING CLEARANCE 30-33
UNDERCARRIAGE AND FRAME 30-35
TEST AND ADJUST TRACK TENSION 30-35
HYDRAULIC SYSTEM 30-37
RELEASE PRESSURE REMAINED IN HYDRAULIC CIRCUIT 30-37
TEST AND ADJUST OIL PRESSURE IN WORK EQUIPMENT, TRAVEL, AND BOOM SWING CIRCUITS
30-45
TEST AND ADJUST OIL PRESSURE IN SWING AND BLADE CIRCUITS 30-53
TEST AND ADJUST OIL PRESSURE IN CONTROL CIRCUIT 30-58
TEST AND ADJUST OIL PRESSURE IN PUMP LS CONTROL CIRCUIT 30-60
00 INDEX AND FOREWORD INDEX
PC24MR-5, PC26MR-5 00-3
TEST OUTLET PRESSURE IN SOLENOID VALVE 30-63
TEST OUTLET PRESSURE IN PPC VALVE 30-66
ADJUST PLAY OF WORK EQUIPMENT AND SWING PPC VALVES 30-70
TEST RELEASE PRESSURE IN SWING PARKING BRAKE 30-71
TEST TRAVEL DEVIATION 30-74
TEST THE PARTS WHICH CAUSE HYDRAULIC DRIFT OF WORK EQUIPMENT 30-75
TEST OIL LEAKAGE 30-77
BLEED AIR FROM HYDRAULIC SYSTEM 30-83
PRESSURIZE HYDRAULIC TANK 30-85
ELECTRICAL SYSTEM 30-87
START UP KOMTRAX TERMINAL 30-87
STOP USING OF KOMTRAX TERMINAL (MACHINE WITH KOMTRAX TERMINAL) 30-91
DISPLAY OF KOMTRAX TERMINAL LAMPS 30-93
BATTERY DISCONNECT SWITCH 30-96
TEST DIODES 30-97
Pm-CLINIC 30-98
Pm CLINIC SERVICE 30-98
40 TROUBLESHOOTING 40-1
CONTENTS 40-2
RELATED INFORMATION TO TROUBLESHOOT 40-6
GENERAL TROUBLESHOOTING POINTS 40-6
SEQUENCE OF EVENTS IN TROUBLESHOOTING 40-7
CHECKS BEFORE TROUBLESHOOTING 40-9
INSPECTION PROCEDURE BEFORE TROUBLESHOOTING 40-11
TEST IN ACCORDANCE WITH TESTING PROCEDURE 40-12
PREPARATION TO TROUBLESHOOT ELECTRICAL SYSTEM 40-39
PROCEDURE FOR TROUBLESHOOTING 40-42
SYMPTOM AND TROUBLESHOOTING NUMBERS 40-43
INFORMATION DESCRIBED IN TROUBLESHOOTING TABLE 40-47
CONNECTOR LIST AND LAYOUT (Cab) 40-49
CONNECTOR LIST AND LAYOUT (Canopy) 40-57
CONNECTOR CONTACT IDENTIFICATION 40-63
T-BRANCH BOX AND T-BRANCH ADAPTER TABLE 40-105
FUSE LOCATION TABLE 40-111
TABLE OF FAILURE CODE AND USER CODE 40-113
TROUBLESHOOTING BY FAILURE CODE (DISPLAY OF CODE) 40-115
USER CODE [EOE] 40-115
FAILURE CODE [6AZ0ZG] 40-118
FAILURE CODE [DBH0MC] 40-119
FAILURE CODE [DBH2KK] 40-120
FAILURE CODE [DBH5KP] 40-124
FAILURE CODE [DBHLKA] 40-128
FAILURE CODE [DBHLKB] 40-130
FAILURE CODE [DDWLKA] 40-131
FAILURE CODE [DDWLKB] 40-134
FAILURE CODE [DFB1KZ] 40-136
FAILURE CODE [DFB2KZ] 40-139
FAILURE CODE [DFB3L8] 40-143
FAILURE CODE [DFB4L8] 40-146
FAILURE CODE [DFB5KZ] 40-150
FAILURE CODE [DFB6KZ] 40-153
FAILURE CODE [DV50KB] 40-157
FAILURE CODE [DV50KY] 40-160
FAILURE CODE [DXE7KA] 40-163
FAILURE CODE [DXE7KB] 40-166
FAILURE CODE [DXE7KY] 40-169
FAILURE CODE [DXE8KA] 40-172
FAILURE CODE [DXE8KB] 40-175
INDEX 00 INDEX AND FOREWORD
00-4 PC24MR-5, PC26MR-5
FAILURE CODE [DXE8KY] 40-178
FAILURE CODE [DXE9KA] 40-181
FAILURE CODE [DXE9KB] 40-184
FAILURE CODE [DXE9KY] 40-187
FAILURE CODE [DXEAKA] 40-190
FAILURE CODE [DXEAKB] 40-193
FAILURE CODE [DXEAKY] 40-196
TROUBLESHOOTING OF ELECTRICAL SYSTEM (E-MODE) 40-199
E-1 ENGINE DOES NOT START (ENGINE DOES NOT CRANK) (Cab) 40-199
E-2 ENGINE DOES NOT START (ENGINE DOES NOT CRANK) (Canopy) 40-205
E-3 ENGINE DOES NOT START (FUEL FEED PUMP SYSTEM) 40-212
E-4 PREHEATING SYSTEM DOES NOT OPERATE 40-215
E-5 WHEN YOU TURN STARTING SWITCH TO ON POSITION, ALL ITEMS OF MACHINE MONITOR
DO NOT WORK, OR ONE OF ITEMS DO NOT WORK 40-217
E-6 CHARGE LEVEL CAUTION LAMP LIGHTS UP WHILE ENGINE IS IN OPERATION 40-220
E-7 FUEL LEVEL MONITOR PILOT LAMP LIGHTS UP WHILE ENGINE IS IN OPERATION 40-222
E-8 ENGINE COOLANT TEMPERATURE MONITOR PILOT LAMP LIGHTS UP WHILE ENGINE IS IN
OPERATION 40-223
E-9 ENGINE OIL PRESSURE CAUTION LAMP LIGHTS UP WHILE ENGINE IS IN OPERATION
40-224
E-10 FUEL GAUGE DOES NOT MOVE FROM MINIMUM OR MAXIMUM 40-225
E-11 FUEL GAUGE DOES NOT SHOW ACTUAL FUEL LEVEL 40-227
E-12 COOLANT TEMPERATURE GAUGE DOES NOT MOVE FROM MINIMUM OR MAXIMUM40-229
E-13 COOLANT TEMPERATURE GAUGE DOES NOT SHOW CORRECT TEMPERATURE 40-231
E-14 TRAVEL SPEED DOES NOT CHANGE EVEN WHEN YOU OPERATE THE OPERATION TO
CHANGE TRAVEL SPEED 40-232
E-15 TRAVEL ALARM DOES NOT MAKE SOUND (Cab) 40-237
E-16 TRAVEL ALARM DOES NOT MAKE SOUND (Canopy) 40-240
E-17 TRAVEL ALARM DOES NOT STOP WHEN MACHINE STOPS 40-243
E-18 ALARM BUZZER DOES NOT MAKE SOUND 40-246
E-19 ALARM BUZZER DOES NOT STOP WHEN MACHINE STOPS 40-250
E-20 SERVICE METER IS NOT SHOWN WHILE STARTING SWITCH IS IN OFF POSITION 40-253
E-21 SERVICE METER DOES NOT OPERATE WHILE ENGINE IS IN OPERATION 40-254
E-22 ALL WORK EQUIPMENT, SWING, TRAVEL DO NOT OPERATE (Cab) 40-255
E-23 ALL WORK EQUIPMENT, SWING, TRAVEL DO NOT OPERATE (Canopy) 40-260
E-24 ALL WORK EQUIPMENT, SWING, TRAVEL CANNOT BE LOCKED (Cab) 40-265
E-25 ALL WORK EQUIPMENT, SWING, TRAVEL CANNOT BE LOCKED (Canopy) 40-268
E-26 HORN DOES NOT MAKE SOUND 40-271
E-27 HORN DOES NOT STOP 40-274
E-28 WORKING LAMP DOES NOT LIGHT UP (Cab) 40-277
E-29 WORKING LAMP DOES NOT LIGHT UP (Canopy) 40-279
E-30 BEACON LAMP DOES NOT LIGHT UP (Cab) 40-281
E-31 BEACON LAMP DOES NOT LIGHT UP (Canopy) 40-283
E-32 KOMTRAX SYSTEM DOES NOT OPERATE CORRECTLY 40-285
TROUBLESHOOTING FOR HYDRAULIC AND MECHANICAL SYSTEMS (H MODE) 40-286
INFORMATION SHOWN IN TROUBLESHOOTING TABLE (H-MODE) 40-286
H-1 ALL WORK EQUIPMENT, TRAVEL, SWING, BLADE DO NOT OPERATE 40-287
H-2 All work equipment or travel does not operate 40-288
H-3 TRAVEL AND BLADE DO NOT OPERATE 40-289
H-4 SWING AND BLADE DO NOT OPERATE 40-290
H-5 ALL WORK EQUIPMENT, TRAVEL, SWING, BLADE SPEED IS LOW OR POWER IS LOW 40-291
H-6 ALL WORK EQUIPMENT AND TRAVEL SPEED IS LOW OR POWER IS LOW 40-292
H-7 TRAVEL AND BLADE SPEED IS LOW OR POWER IS LOW 40-293
H-8 SWING AND BLADE SPEED OR POWER IS LOW 40-294
H-9 FINE CONTROL PERFORMANCE OR RESPONSE IS UNSATISFACTORY 40-295
H-10 THERE IS AN UNUSUAL NOISE FROM AROUND MAIN PUMP 40-296
H-11 ENGINE SPEED FALLS LARGELY OR ENGINE STOPS 40-297
H-12 ALL WORK EQUIPMENT SPEED OR POWER IS LOW 40-298
00 INDEX AND FOREWORD INDEX
PC24MR-5, PC26MR-5 00-5
H-13 ALL WORK EQUIPMENT AND BLADE SPEED IS LOW OR POWER IS LOW 40-299
H-14 BLADE DOES NOT OPERATE 40-300
H-15 ALL WORK EQUIPMENT DO NOT OPERATE 40-301
H-16 ALL WORK EQUIPMENT AND BLADE DO NOT OPERATE 40-302
H-17 BOOM SPEED OR POWER IS LOW 40-303
H-18 ARM SPEED IS LOW OR POWER IS LOW 40-305
H-19 BUCKET SPEED OR POWER IS LOW 40-306
H-20 BLADE SPEED IS LOW OR POWER IS LOW 40-307
H-21 BOOM SWING SPEED IS LOW OR POWER IS LOW 40-309
H-22 WORK EQUIPMENT DOES NOT MOVE IN SINGLE OPERATION 40-310
H-23 HYDRAULIC DRIFT OF BOOM IS LARGE 40-312
H-24 HYDRAULIC DRIFT OF ARM IS LARGE 40-313
H-25 HYDRAULIC DRIFT OF BUCKET IS LARGE 40-314
H-26 HYDRAULIC DRIFT OF BLADE IS LARGE 40-315
H-27 TIME LAG OF WORK EQUIPMENT IS LARGE 40-316
H-28 IN COMBINED OPERATION OF WORK EQUIPMENT, WORK EQUIPMENT WITH HEAVIER
LOAD MOVES SLOWER 40-317
H-29 MACHINE DOES NOT TRAVEL STRAIGHT 40-318
H-30 MACHINE DOES NOT MOVE OFF STRAIGHT 40-320
H-31 MACHINE IS NOT STEERED WELL OR STEERING POWER IS LOW 40-321
H-32 TRAVEL SPEED IS SLOW 40-323
H-33 ONE OF TRACKS DOES NOT RUN 40-325
H-34 TRAVEL SPEED DOES NOT CHANGE, OR TRAVEL SPEED IS TOO SLOW OR FAST 40-326
H-35 MACHINE DOES NOT SWING TO RIGHT OR LEFT 40-327
H-36 SWINGS ONLY IN ONE DIRECTION 40-329
H-37 SWING ACCELERATION OR SWING SPEED IS LOW IN TWO DIRECTIONS OF RIGHT AND
LEFT 40-331
H-38 SWING ACCELERATION OR SWING SPEED IS LOW IN ONLY ONE DIRECTION 40-333
H-39 UPPER STRUCTURE OVERRUNS EXCESSIVELY WHEN IT STOPS SWING OPERATION
(RIGHT AND LEFT) 40-334
H-40 UPPER STRUCTURE OVERRUNS EXCESSIVELY WHEN IT STOPS SWING OPERATION
(ONLY ONE DIRECTION) 40-335
H-41 SHOCK IS LARGE WHEN UPPER STRUCTURE STOPS SWING OPERATION 40-336
H-42 THERE IS A LARGE UNUSUAL NOISE WHEN UPPER STRUCTURE STOPS SWING OPERATION
40-337
H-43 SWING DRIFT ON A SLOPE IS LARGE (WHILE SWING PARKING BRAKE IS APPLIED) 40-338
H-44 SWING DRIFT ON A SLOPE IS LARGE (WHILE SWING PARKING BRAKE IS RELEASED)
40-339
TROUBLESHOOTING OF ENGINE (S-MODE) 40-340
INFORMATION DESCRIBED IN TROUBLESHOOTING TABLE (S-MODE) 40-340
S-1 ENGINE DOES NOT CRANK WHEN STARTING SWITCH IS TURNED TO START POSITION
40-341
S-2 ENGINE CRANKS BUT NO EXHAUST SMOKE COMES OUT 40-342
S-3 FUEL IS INJECTED BUT ENGINE DOES NOT START (MISFIRING: ENGINE CRANKS BUT
DOES NOT START) 40-343
S-4 ENGINE STARTABILITY IS UNSATISFACTORY 40-344
S-5 ENGINE DOES NOT PICK UP SMOOTHLY 40-346
S-6 ENGINE STOPS DURING OPERATION 40-347
S-7 ENGINE RUNNING IS NOT STABLE 40-349
S-8 OUTPUT POWER IS LOW (POWER IS LOW) 40-350
S-9 ENGINE OIL CONSUMPTION IS EXCESSIVE 40-352
S-10 ENGINE OIL BECOMES CONTAMINATED QUICKLY 40-353
S-11 FUEL CONSUMPTION IS EXCESSIVE 40-354
S-12 OIL MIXES INTO COOLANT (OR SPURTS BACK, COOLANT LEVEL FALLS) 40-355
S-13 ENGINE OIL PRESSURE FALLS 40-356
S-14 FUEL MIXES INTO ENGINE OIL 40-357
S-15 WATER MIXES INTO ENGINE OIL (MILKY) 40-358
S-16 COOLANT TEMPERATURE RISES TOO HIGH (OVERHEAT) 40-359
INDEX 00 INDEX AND FOREWORD
00-6 PC24MR-5, PC26MR-5
S-17 THERE IS AN UNUSUAL NOISE 40-360
S-18 VIBRATION IS EXCESSIVE 40-361
S-19 AIR CANNOT BE BLED FROM FUEL CIRCUIT 40-362
50 DISASSEMBLY AND ASSEMBLY 50-1
CONTENTS 50-2
RELATED INFORMATION ON DISASSEMBLY AND ASSEMBLY 50-5
HOW TO READ THIS MANUAL 50-5
COATING MATERIALS LIST 50-7
SPECIAL TOOLS LIST 50-11
ENGINE AND COOLING SYSTEM 50-14
DRAIN AND ADD COOLANT 50-14
DRAIN AND ADD HYDRAULIC OIL 50-16
REMOVE AND INSTALL RADIATOR ASSEMBLY 50-19
REMOVE AND INSTALL HYDRAULIC OIL COOLER ASSEMBLY 50-25
REMOVE AND INSTALL ENGINE AND MAIN PUMP ASSEMBLY 50-35
REMOVE AND INSTALL FUEL TANK ASSEMBLY 50-51
POWER TRAIN 50-56
REMOVE AND INSTALL TRAVEL MOTOR ASSEMBLY (PC24MR-5) 50-56
REMOVE AND INSTALL TRAVEL MOTOR ASSEMBLY (PC26MR-5) 50-60
REMOVE AND INSTALL SWING MOTOR ASSEMBLY 50-64
REMOVE AND INSTALL SWING CIRCLE ASSEMBLY 50-66
UNDERCARRIAGE AND FRAME 50-68
DISASSEMBLE AND ASSEMBLE RECOIL SPRING ASSEMBLY 50-68
REMOVE AND INSTALL TRACK ASSEMBLY 50-76
DISASSEMBLE AND ASSEMBLE IDLER ASSEMBLY 50-78
DISASSEMBLE AND ASSEMBLE TRACK ROLLER ASSEMBLY 50-84
REMOVE AND INSTALL REVOLVING FRAME ASSEMBLY 50-86
REMOVE AND INSTALL COUNTERWEIGHT ASSEMBLY 50-90
HYDRAULIC SYSTEM 50-94
REMOVE AND INSTALL CENTER SWIVEL JOINT ASSEMBLY (PC24MR-5) 50-94
REMOVE AND INSTALL CENTER SWIVEL JOINT ASSEMBLY (PC26MR-5) 50-100
REMOVE AND INSTALL HYDRAULIC TANK ASSEMBLY (CANOPY SPECIFICATION) 50-106
REMOVE AND INSTALL HYDRAULIC TANK ASSEMBLY (CAB SPECIFICATION) 50-112
REMOVE AND INSTALL MAIN PUMP ASSEMBLY 50-116
WORK EQUIPMENT 50-119
REMOVE AND INSTALL BLADE ASSEMBLY 50-119
REMOVE AND INSTALL WORK EQUIPMENT ASSEMBLY 50-122
REMOVE AND INSTALL BOOM ANTI-DROP VALVE ASSEMBLY 50-126
REMOVE AND INSTALL ARM ANTI-DROP VALVE ASSEMBLY 50-130
DISASSEMBLE AND ASSEMBLE ANTI-DROP VALVE ASSEMBLY 50-135
DISASSEMBLE AND ASSEMBLE WORK EQUIPMENT CYLINDER ASSEMBLY 50-136
CAB RELATED PARTS 50-145
REMOVE AND INSTALL OPERATOR CAB ASSEMBLY (CAB SPECIFICATION) 50-145
REMOVE AND INSTALL FLOOR FRAME ASSEMBLY (CANOPY SPECIFICATION) 50-157
REMOVE AND INSTALL OPERATOR CAB GLASS (ADHERED GLASS) 50-170
REMOVE AND INSTALL FRONT WINDOW ASSEMBLY 50-180
REMOVE AND INSTALL OPERATOR’S SEAT 50-183
REMOVE AND INSTALL SEATBELT 50-185
ELECTRICAL SYSTEM 50-187
REMOVE AND INSTALL MACHINE CONTROLLER ASSEMBLY 50-187
REMOVE AND INSTALL MACHINE MONITOR ASSEMBLY 50-193
REMOVE AND INSTALL KOMTRAX TERMINAL ASSEMBLY 50-197
60 MAINTENANCE STANDARD 60-1
CONTENTS 60-2
EXPLANATION OF TERMS FOR MAINTENANCE STANDARD 60-3
ENGINE AND COOLING SYSTEM 60-5
MAINTENANCE STANDARD OF ENGINE MOUNT 60-5
MAINTENANCE STANDARD OF PTO 60-6
00 INDEX AND FOREWORD INDEX
PC24MR-5, PC26MR-5 00-7
MAINTENANCE STANDARD OF COOLING SYSTEM 60-7
POWER TRAIN 60-8
MAINTENANCE STANDARD OF SWING CIRCLE 60-8
MAINTENANCE STANDARD OF SPROCKET 60-9
UNDERCARRIAGE AND FRAME 60-11
MAINTENANCE STANDARD OF TRACK FRAME AND IDLER CUSHION 60-11
MAINTENANCE STANDARD OF IDLER 60-15
MAINTENANCE STANDARD OF TRACK ROLLER 60-19
MAINTENANCE STANDARD OF TRACK SHOE 60-21
MAINTENANCE STANDARD OF DOUBLE SHOE 60-23
MAINTENANCE STANDARD OF RUBBER SHOE 60-24
HYDRAULIC SYSTEM 60-26
MAINTENANCE STANDARD OF HYDRAULIC TANK 60-26
MAINTENANCE STANDARD OF MAIN PUMP 60-27
MAINTENANCE STANDARD OF SWING MOTOR 60-28
MAINTENANCE STANDARD OF TRAVEL MOTOR 60-29
MAINTENANCE STANDARD OF CONTROL VALVE 60-32
MAINTENANCE STANDARD OF ANTI-DROP VALVE OF BOOM 60-42
MAINTENANCE STANDARD OF ANTI-DROP VALVE OF ARM 60-44
MAINTENANCE STANDARD OF WORK EQUIPMENT AND SWING PPC VALVE 60-46
MAINTENANCE STANDARD OF BLADE PPC VALVE 60-49
MAINTENANCE STANDARD OF BOOM SWING PPC VALVE 60-51
MAINTENANCE STANDARD OF TRAVEL PPC VALVE 60-53
MAINTENANCE STANDARD OF ATTACHMENT PPC VALVE 60-56
MAINTENANCE STANDARD OF CENTER SWIVEL JOINT 60-58
WORK EQUIPMENT 60-59
MAINTENANCE STANDARD OF WORK EQUIPMENT LINKAGE 60-59
DIMENSIONS OF ARM 60-71
DIMENSIONS OF BUCKET 60-73
MAINTENANCE STANDARD OF BOOM CYLINDER 60-74
MAINTENANCE STANDARD OF ARM CYLINDER 60-75
MAINTENANCE STANDARD OF BUCKET CYLINDER 60-76
MAINTENANCE STANDARD OF BLADE CYLINDER 60-77
MAINTENANCE STANDARD OF BOOM SWING CYLINDER 60-78
90 CIRCUIT DIAGRAMS 90-1
CONTENTS 90-2
HOW TO READ THE CODES FOR ELECTRIC CABLE 90-3
HYDRAULIC CIRCUIT DIAGRAM 90-7
SYMBOLS USED IN HYDRAULIC CIRCUIT DIAGRAM 90-7
HYDRAULIC CIRCUIT DIAGRAM (1/3) 90-11
HYDRAULIC CIRCUIT DIAGRAM (2/3) 90-13
HYDRAULIC CIRCUIT DIAGRAM (3/3) 90-15
HYDRAULIC CIRCUIT DIAGRAM (AT BOOM RAISE OPERATION) 90-17
HYDRAULIC CIRCUIT DIAGRAM (AT LEFT SWING OPERATION) 90-19
HYDRAULIC CIRCUIT DIAGRAM (AT BOOM RAISE AND LEFT SWING OPERATION) 90-21
ELECTRICAL CIRCUIT DIAGRAM 90-23
SYMBOLS USED IN ELECTRIC CIRCUIT DIAGRAM 90-23
ELECTRICAL CIRCUIT DIAGRAM (CANOPY SPECIFICATION) (1/3) 90-27
ELECTRICAL CIRCUIT DIAGRAM (CANOPY SPECIFICATION) (2/3) 90-29
ELECTRICAL CIRCUIT DIAGRAM (CANOPY SPECIFICATION) (3/3) 90-31
ELECTRICAL CIRCUIT DIAGRAM (CAB SPECIFICATION) (1/4) 90-33
ELECTRICAL CIRCUIT DIAGRAM (CAB SPECIFICATION) (2/4) 90-35
ELECTRICAL CIRCUIT DIAGRAM (CAB SPECIFICATION) (3/4) 90-37
ELECTRICAL CIRCUIT DIAGRAM (CAB SPECIFICATION) (4/4) 90-39
INDEX 1

DESCRIPTION:

Komatsu PC24MR-5 PC26MR-5 Compact Hydraulic Excavator Shop Manual SEN06893-00 – PDF DOWNLOAD

FOREWORD, SAFETY, BASIC INFORMATION:
HOW TO READ THE SHOP MANUAL:
• Some of the attachments and options described in this shop manual may not be available in some areas. If
they are required, consult your Komatsu distributor.
• The materials and specifications are subject to change without notice.
• Shop Manuals are available for “machine part” and “engine part”. For the engine unit, see the shop manual
for the machine which has the same engine model.
• Actual machine may differ from the images which are contained in this manual. A typical model is shown in
the illustrations of this shop manual.
Composition of the shop manual
This shop manual contains technical information necessary to perform services in workshops. It is divided into
the following chapters for the ease of use.

00 INDEX AND FOREWORD
This section describes the index, foreword, safety, and basic information.
01 SPECIFICATIONS
This section describes the specifications of the machine.
10 STRUCTURE AND FUNCTION
This section describes the structure and operation of each component with respect to each system. “STRUCTURE
AND FUNCTION” is helpful in not only understanding the structure of each component but performing
troubleshooting.
20 STANDARD VALUE TABLE
This section describes the standard values for new machine and failure criteria for testing and adjusting, and
troubleshooting. Use the standard values table to check the standard values for testing and adjusting, and judge
troubles in troubleshooting.
30 TESTING AND ADJUSTING
This section describes the measuring tools and measuring methods for testing and adjusting as well as the adjusting
method of each part. The standard values and repair limit for TESTING AND ADJUSTING are described
in “STANDARD VALUE TABLE”.
40 TROUBLESHOOTING
This section describes troubleshooting of failure part and its remedy method on the occurrence of the failure.
Descriptions of troubleshooting are sorted by failure mode.
50 DISASSEMBLY AND ASSEMBLY
This section describes the special tools, work procedures, and safety precautions necessary for removal, installation,
disassembly, and assembly of the components and parts. In addition, tightening torques, quantity, and
weight of the coating materials, lubricants, and coolant necessary to these works are shown.
60 MAINTENANCE STANDARD
This section describes the maintenance standard value of each component. The maintenance standard shows
the criteria and remedies for disassembly and assembly.
80 THE OTHER INFORMATION
This section describes the structure and function, testing and adjusting, and troubleshooting for all of the other
components or equipment which cannot be separately classified in the appendix.
90 Circuit diagrams
This section describes hydraulic circuit diagrams and electrical circuit diagrams.

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