Komatsu PC300-8M0 PC350LC-8M0 Hydraulic Excavator Shop Manual PDF

Description

Komatsu PC300-8M0 PC350LC-8M0 Hydraulic Excavator Shop Manual UENBM00410 – PDF DOWNLOAD

FILE DETAILS:

Komatsu PC300-8M0 PC350LC-8M0 Hydraulic Excavator Shop Manual UENBM00410 – PDF DOWNLOAD

Language : English
Pages : 1185
Downloadable : Yes
File Type : PDF

TABLE OF CONTENTS:

Komatsu PC300-8M0 PC350LC-8M0 Hydraulic Excavator Shop Manual UENBM00410 – PDF DOWNLOAD 

SERIAL NUMBERS
PC300-8M0 K56001 and up
PC350LC-8M0 K52001 and up

00 Index and foreword
100 Index UEN06259-02
Composition of shop manual 2
Table of contents 4
200 Foreword and general information UEN06260-00
Foreword, safety and general information 2
How to read the shop manual 9
Explanation of terms for maintenance standard 11
Handling equipment of fuel system devices 13
Handling of intake system parts 14
Handling of hydraulic equipment 15
Method of disconnecting and connectingof push-pull type coupler 17
Handling of electrical equipment 20
How to read electric wire code 29
Precautions when performing operation 32
Practical use of KOMTRAX 35
Standard tightening torque table 36
List of abbreviation 40
Conversion table 45
01 Specification
100 Specification and technical data UEN06262-01
Specification dimension drawings 2
Specifications 4
Weight table 10
Table of fuel, coolant and lubricants 12
10 Structure, function and maintenance standard
100 Engine and cooling system UEN06264-01
Engine related parts 2
Radiator, oil cooler and aftercooler 3
200 Power train UEN06265-01
Power train 2
Swing circle 3
Swing machinery 4
Final drive 6
Sprocket 8
300 Undercarriage and frame UEN06266-01
Track frame and recoil spring 2
Idler 4
Carrier roller 6
Track roller 7
Track shoe 9
401 Hydraulic system, Part 1 UEN06267-01
Hydraulic equipment layout drawing 2
Hydraulic tank and filter 4
Hydraulic pump 6
402 Hydraulic system, Part 2 UEN06268-01
Control valve 2
CLSS 14
Functions and operation by valve 18
Attachment circuit selector valve 57
Hydraulic drift prevention valve 60
UEN06259-02
PC300, 350LC-8M0 00-100 5
100 Index
Table of contents
403 Hydraulic system, Part 3 UEN06269-01
Valve control 2
PPC valve 4
Solenoid valve 24
PPC accumulator 26
Center swivel joint 27
Travel motor 29
Swing motor 41
Work equipment cylinder 49
500 Work equipment UEN06270-01
Work equipment 2
Dimensions of components 4
600 Electrical system UEN06271-01
Engine control system 2
Electronic control system 11
Machine monitor system 36
Sensor 56
KOMTRAX system 59
20 Standard value table
100 Standard service value table UEN06276-00
Standard value table for engine related parts 2
Standard value table for chassis related parts 3
30 Testing and adjusting
101 Testing and adjusting, Part 1 UEN06278-00
Tools for testing, adjusting and troubleshooting 3
Sketches of special tools 7
Testing engine speed 8
Testing air boost pressure 9
Testing exhaust gas color 10
Adjusting valve clearance 12
Testing compression pressure 14
Testing blowby pressure 18
Testing engine oil pressure 19
Testing fuel pressure 20
Handling during cylinder cutout operation 25
Handling during no-injection cranking operation 25
Testing fuel return rate and leakage 26
Bleeding air from fuel circuit 28
Checking fuel circuit for leakage 29
Testing and adjusting air compressor belt tension 30
Replacing fan belt 31
Replacing alternator belt 32
Testing clearance in swing circle bearings 33
Testing and adjusting track tension 34
Testing and adjusting oil pressure in work equipment, swing and travel circuit 35
Testing control circuit oil pressure 39
Testing and adjusting pump PC control circuit oil pressure 40
Testing and adjusting pump LS control circuit oil pressure 43
Testing solenoid valve output pressure 48
Testing PPC valve output pressure 52
Adjusting play of work equipment and swing PPC valves 53
Inspecting locations of hydraulic drift of work equipment 54
Releasing remaining pressure in hydraulic circuit 56
Testing oil leakage amount 57
Bleeding air from various parts 59
UEN06259-02
00-100 6 PC300, 350LC-8M0
100 Index
Table of contents
102 Testing and adjusting, Part 2 UEN06279-00
Special functions of machine monitor 2
103 Testing and adjusting, Part 3 UEN06280-00
Handling voltage circuit of engine controller 2
Preparation work for troubleshooting of electrical system 3
Procedure for testing diodes 7
Pm clinic service 8
40 Troubleshooting
100 Failure code table and fuse locations UEN06354-00
Failure codes table 2
Fuse locations 10
200 General Information on troubleshooting UEN06355-00
Symptom and troubleshooting numbers 2
Sequence of events in troubleshooting 4
Checks before troubleshooting 6
Classification and procedures for troubleshooting 8
Symptom and troubleshooting numbers 10
Information in troubleshooting table 12
Connector list and layout 14
Connection table for connector pin numbers 24
T- branch box and T- branch adapter table 60
Troubleshooting method for open circuit in wiring harness of pressure sensor system 63
301 Troubleshooting by failure code, Part 1 UEN06356-00
Failure code [879AKA] A/C Inner Sensor Open Circuit 3
Failure code [879AKB] A/C Inner Sensor Short Circuit 3
Failure code [879BKA] A/C Outer Sensor Open Circuit 3
Failure code [879BKB] A/C Outer Sensor Short Circuit 3
Failure code [879CKA] Ventilating Sensor Open Circuit 3
Failure code [879CKB] Ventilating Sensor Short Circuit 4
Failure code [879DKZ] Sunlight Sensor Open Or Short Circuit 4
Failure code [879EMC] Ventilation Damper Abnormality 4
Failure code [879FMC] Air Mix Damper Abnormality 4
Failure code [879GKX] Refrigerant Abnormality 4
Failure code [989L00] Engine Controller Lock Caution1 5
Failure code [989M00] Engine Controller Lock Caution2 6
Failure code [989N00] Engine Controller Lock Caution3 7
Failure code [AA10NX] Air Cleaner Clogging 8
Failure code [AB00KE] Charge Voltage Low 10
Failure code [B@BAZG] Eng Oil Press Low 12
Failure code [B@BAZK] Engine Oil Level Low 13
Failure code [B@BCNS] Eng Water Overheat 14
Failure code [B@BCZK] Radiator Coolant Level Low 16
Failure code [B@HANS] Hyd Oil Overheat 18
Failure code [CA111] ECM Critical Internal Failure 19
Failure code [CA115] Eng Ne and Bkup Speed Sens Error 19
Failure code [CA122] Chg Air Press Sensor High Error 20
Failure code [CA123] Chg Air Press Sensor Low Error 22
Failure code [CA131] Throttle Sensor High Error 24
Failure code [CA132] Throttle Sensor Low Error 26
Failure code [CA144] Coolant Temp Sens High Error 28
Failure code [CA145] Coolant Temp Sens Low Error 30
Failure code [CA153] Chg Air Temp Sensor High Error 32
Failure code [CA154] Chg Air Temp Sensor Low Error 34
Failure code [CA155] Chg Air Temp High Speed Derate 36
Failure code [CA187] Sens Supply 2 Volt Low Error 38
Failure code [CA221] Ambient Press Sens High Error 40
UEN06259-02
PC300, 350LC-8M0 00-100 7
100 Index
Table of contents
Failure code [CA222] Ambient Press Sens Low Error 42
Failure code [CA227] Sens 2 Supply Volt High Error 44
Failure code [CA234] Eng Overspeed 44
Failure code [CA238] Ne Speed Sens Supply Volt Error 45
Failure code [CA271] IMV/PCV1 Short Error 46
Failure code [CA272] IMV/PCV1 Open Error 48
Failure code [CA281] Abnormal supply pump pressure balance 50
302 Troubleshooting by failure code, Part 2 UEN06357-00
Failure code [CA322] Inj #1(L#1) Open/Short Error 4
Failure code [CA323] Inj #5(L#5) Open/Short Error 6
Failure code [CA324] Inj #3(L#3) Open/Short Error 8
Failure code [CA325] Inj #6(L#6) Open/Short Error 10
Failure code [CA331] Inj #2(L#2) Open/Short Error 12
Failure code [CA332] Inj #4(L#4) Open/Short Error 14
Failure code [CA342] Calibration Code Incompatibility 16
Failure code [CA351] Injectors Drive Circuit Error 17
Failure code [CA352] Sens Supply 1 Volt Low Error 18
Failure code [CA386] Sens Supply 1 Volt High Error 20
Failure code [CA428] Water in Fuel Sensor High Error 22
Failure code [CA429] Water in Fuel Sensor Low Error 24
Failure code [CA435] Eng Oil Press Sw Error 26
Failure code [CA441] Battery Voltage Low Error 28
Failure code [CA442] Battery Voltage High Error 30
Failure code [CA449] Rail Press Very High Error 31
Failure code [CA451] Rail Press Sensor High Error 32
Failure code [CA452] Rail Press Sensor Low Error 34
Failure code [CA488] Chg Air Temp High Torque Derate 36
Failure code [CA553] Rail Press High Error 37
Failure code [CA559] Rail Press Low Error 38
Failure code [CA689] Eng Ne Speed Sensor Error 40
Failure code [CA731] Eng Bkup Speed Sens Phase Error 44
Failure code [CA757] All Continuous Data Lost Error 45
Failure code [CA778] Eng Bkup Speed Sensor Error 46
Failure code [CA2185] Throt Sens Sup Volt High Error 49
Failure code [CA2186] Throt Sens Sup Volt Low Error 50
Failure code [CA2249] Rail Press Very Low Error 51
Failure code [CA2265] Fuel Feed Pump Open Error 52
Failure code [CA2266] Fuel Feed Pump Short Error 54
Failure code [CA2311] lMV Solenoid Error 55
Failure code [CA2555] Grid Htr Relay Open Circuit Error 56
Failure code [CA2556] Grid Htr Relay Short Circuit Error 58
303 Troubleshooting by failure code, Part 3 UEN06358-00
Failure code [D110KB] Battery Relay Drive Short Circuit 4
Failure code [D19JKZ] Personal Code Relay Abnormality 6
Failure code [D811MC] KOMTRAX Error 8
Failure code [D862KA] GPS Antenna Open Circuit 9
Failure code [D8AQKR] CAN2 Discon (KOMTRAX) 10
Failure code [DA22KK] Pump Solenoid Power Low Error 12
Failure code [DA25KP] 5V Sensor 1 Power Abnormality 14
Failure code [DA26KP] 5V Sensor 2 Power Abnormality 16
Failure code [DA29KQ] Model Selection Abnormality 18
Failure code [DA2QKR] CAN2 Discon (Pump Con) 20
Failure code [DAF0MB] Monitor ROM Abnormality 23
Failure code [DAF0MC] Monitor Error 24
Failure code [DAF8KB] Camera Power Supply Short Circuit 26
Failure code [DAF9KQ] Model Selection Abnormality 28
Failure code [DAFGMC] GPS Module Error 29
Failure code [DAFQKR] CAN2 Discon 30
UEN06259-02
00-100 8 PC300, 350LC-8M0
100 Index
Table of contents
Failure code [DAZ9KQ] A/C Model Selection Abnormality 31
Failure code [DAZQKR] CAN2 Discon (Aircon ECU) 32
Failure code [DB2QKR] CAN2 Discon (Engine Con) 34
Failure code [DGH2KB] Hyd Oil Sensor Short Circuit 38
Failure code [DHA4KA] Air Cleaner Clog Sensor Open Circuit 40
Failure code [DHPAMA] F Pump Press Sensor Abnormality 42
Failure code [DHPBMA] R Pump Press Sensor Abnormality 44
304 Troubleshooting by failure code, Part 4 UEN06359-00
Failure code [DHS3MA] Arm Curl PPC Press Sensor Abnormality 4
Failure code [DHS4MA] Bucket CURL PPC Press Sensor Abnormality 6
Failure code [DHS8MA] Boom Raise PPC Press Sensor Abnormality 8
Failure code [DHS9MA] Boom Lower PPC Press Sensor Abnormality 10
Failure code [DHSAMA] Swing RH PPC Press Sensor Abnormality 12
Failure code [DHSBMA] Swing LH PPC Press Sensor Abnormality 14
Failure code [DHSCMA] Arm Dump PPC Press Sensor Abnormality 16
Failure code [DHSDMA] Bucket Dump PPC Press Sensor Abnormality 18
Failure code [DHSFMA] Travel FW L PPC Press Sensor Abnormality 20
Failure code [DHSGMA] Travel FW R PPC Press Sensor Abnormality 22
Failure code [DHSHMA] Travel BW L PPC Press Sensor Abnormality 24
Failure code [DHSJMA] Travel BW R PPC Press Sensor Abnormality 26
Failure code [DHX1MA] Overload Sensor Abnormality 28
Failure code [DR21KX] Camera 2 Picture Rev Drive Abnormality 30
Failure code [DR31KX] Camera 3 Picture Rev Drive Abnormality 32
Failure code [DV20KB] Travel Alarm Short Circuit 34
Failure code [DW43KA] Travel Speed Sol Open Circuit 36
Failure code [DW43KB] Travel Speed Sol Short Circuit 38
Failure code [DW45KA] Swing Brake Sol Valve Open Circuit 40
Failure code [DW45KB] Swing Brake Sol Short Circuit 42
Failure code [DW91KA] Travel Neutral Sol Open Circuit 44
Failure code [DW91KB] Travel Neutral Sol Short Circuit 46
305 Troubleshooting by failure code, Part 5 UEN06360-00
Failure code [DWA2KA] Attachment Sol Open Circuit 2
Failure code [DWA2KB] Attachment Sol Short Circuit 4
Failure code [DWJ0KA] Merge-divider Sol Open Circuit 6
Failure code [DWJ0KB] Merge-divider Sol Short Circuit 8
Failure code [DWK0KA] 2-stage Relief Sol Open Circuit 10
Failure code [DWK0KB] 2-stage Relief Sol Short Circuit 12
Failure code [DWK2KA] Variable Back Press Sol Open Circuit 14
Failure code [DWK2KB] Variable Back Press Sol Short Circuit 16
Failure code [DXA8KA] PC-EPC Sol Open Circuit 18
Failure code [DXA8KB] PC-EPC Sol Short Circuit 20
Failure code [DXE0KA] LS-EPC Sol Open Circuit 22
Failure code [DXE0KB] LS-EPC Sol Short Circuit 24
Failure code [DXE4KA] Attachment Flow EPC Open Circuit 26
Failure code [DXE4KB] Attachment Flow EPC Short Circuit 28
Failure code [DY20KA] Wiper Working Abnormality 30
Failure code [DY20MA] Wiper Parking Abnormality 32
Failure code [DY2CKB] Washer Drive Short Circuit 34
Failure code [DY2DKB] Wiper Drive (Fwd) Short 36
Failure code [DY2EKB] Wiper Drive (Rev) Short 38
400 Troubleshooting of electrical system (E-mode) UEN06361-00
Fuse locations 4
Information contained in troubleshooting table 6
E-1 Engine does not start (Engine does not crank) 8
E-2 Preheater does not operate 13
E-3 When starting switch is turned to ON position, machine monitor displays nothing 17
E-4 When starting switch is turned to ON position (with engine stopped), basic check monitor lights
up 20
UEN06259-02
PC300, 350LC-8M0 00-100 9
100 Index
Table of contents
E-5 Precaution monitor lights up while engine is running 21
E-6 Emergency stop monitor lights up while engine is running 23
E-7 Fuel level gauge does not indicate properly 24
E-8 Engine coolant temperature gauge does not indicate properly 26
E-9 Hydraulic oil temperature gauge does not indicate properly 27
E-10 Displays on machine monitor are different from those for actual machine 30
E-11 Some areas of machine monitor screen are not displayed 31
E-12 Function switch does not operate 31
E-13 Automatic warm-up system does not operate (in cold season) 32
E-14 Auto-decelerator does not operate properly 33
E-15 Working mode does not change 34
E-16 Travel speed does not change 35
E-17 Alarm buzzer cannot be canceled 36
E-18 When starting switch is turned OFF, service meter is not displayed 36
E-19 Service mode cannot be selected 36
E-20 Any of work equipment, swing and travel do not operate or cannot be locked 37
E-21 Swing holding brake does not operate properly 39
E-22 One-touch power maximizing function does not operate properly 42
E-23 Travel alarm does not sound or does not stop sounding 45
E-24 Horn does not sound or does not stop 46
E-25 Windshield wiper and window washer do not operate 48
E-26 Machine push-up function cannot be canceled 50
E-27 Machine push-up function does not operate 52
E-28 BOOM DOWN indicator is not displayed properly with monitoring function 53
E-29 ARM DUMP indicator is not displayed properly with monitoring function 53
E-30 ARM IN indicator is not displayed properly with monitoring function 53
E-31 BOOM RAISE indicator is not displayed properly with monitoring function 54
E-32 BUCKET CURL indicator is not displayed properly with monitoring function 54
E-33 BUCKET DUMP indicator is not displayed properly with monitoring function 54
E-34 SWING indicator is not displayed properly with monitoring function 55
E-35 TRAVEL indicator is not displayed properly with monitoring function 55
E-36 ATTACHMENT indicator is not displayed properly with monitoring function 56
E-37 Attachment hydraulic circuit cannot be changed 58
E-38 KOMTRAX system does not operate properly 59
500 Troubleshooting of hydraulic and mechanical system (H-mode) UEN06362-00
System chart for hydraulic and mechanical system 4
Information contained in troubleshooting table 6
H-1 All work equipment lack power, or travel and swing speeds are slow 8
H-2 Engine speed sharply drops or engine stalls 10
H-3 No work equipment, swing or travel move 11
H-4 Abnormal noise is heard from around hydraulic pump 11
H-5 Auto-decelerator does not work 12
H-6 Fine control mode does not function or responds slow 12
H-7 Boom moves slowly or lacks power 13
H-8 Arm moves slowly or lacks power 14
H-9 Bucket moves slowly or lacks power 15
H-10 Work equipment does not move in its single operation 15
H-11 Work equipment has a bit too fast hydraulic drift 16
H-12 Work equipment has big time lag 18
H-13 Other work equipment moves when relieving single circuit 18
H-14 Power max switch does not operate 19
H-15 In compound operation, work equipment with larger load moves slowly 19
H-16 In swing + boom RAISE operation, boom moves slowly 20
H-17 In swing + travel operation, travel speed drops sharply 20
H-18 Machine swerves in travel 21
H-19 Machine travels slowly 22
H-20 Machine cannot be easily steered or lacks power 23
H-21 Travel speed does not shift, or it is too slow or fast 24
UEN06259-02
00-100 10 PC300, 350LC-8M0
100 Index
Table of contents
H-22 Track shoe does not turn (on one side only) 25
H-23 Machine does not swing 26
H-24 Swing acceleration is poor, or swing speed is slow 28
H-25 Excessive overrun when stopping swing 30
H-26 There is big shock when stopping swing 31
H-27 Large sound is made when upper structure stops swinging 31
H-28 Swing hydraulic drift is too big 32
600 Troubleshooting of engine (S-mode) UEN06363-00
Method of using troubleshooting charts 3
S-1 Starting performance is poor 6
S-2 Engine does not start 7
S-3 Engine does not pick up smoothly 10
S-4 Engine stops during operations 11
S-5 Engine does not rotate smoothly 12
S-6 Engine lacks output (or lacks power) 13
S-7 Exhaust smoke is black (incomplete combustion) 14
S-8 Oil consumption is excessive (or exhaust smoke is blue) 15
S-9 Oil becomes contaminated quickly 16
S-10 Fuel consumption is excessive 17
S-11 Oil is in coolant (or coolant spurts back, or coolant level goes down) 18
S-12 Oil pressure drops 19
S-13 Oil level rises (water, fuel in oil) 20
S-14 Coolant temperature becomes too high (overheating) 21
S-15 Abnormal noise is made 22
S-16 Vibration is excessive 23
50 Disassembly and assembly
100 Related information on disassembly and assembly UEN06345-00
How to read this manual 2
Coating materials list 4
Special tools list 8
Sketches of special tools 12
200 Engine and cooling system UEN06346-00
Removal and installation of supply pump assembly 2
Removal and installation of engine front oil seal 6
Removal and installation of engine rear oil seal 9
Removal and installation of cylinder head assembly 14
Removal and installation of radiator assembly 28
Removal and installation of hydraulic oil cooler assembly 30
Removal and installation of aftercooler assembly 32
Removal and installation of engine and hydraulic pump assembly 34
300 Power train system UEN06347-00
Removal and installation of travel motor and final drive assembly 2
Disassembly and assembly of final drive assembly 3
Removal and installation of swing motor and swing machinery assembly 13
Disassembly and assembly of swing motor and swing machinery assembly 14
Removal and installation of swing circle assembly 22
400 Undercarriage and frame UEN06348-00
Disassembly and assembly of carrier roller assembly 2
Disassembly and assembly of track roller assembly 5
Removal and installation of idler and idler cushion assembly 7
Disassembly and assembly of idler assembly 8
Disassembly and assembly of recoil spring assembly 11
Removal and installation of sprocket 13
Separation and connection of track assembly 14
Removal and installation of revolving frame assembly 18
Removal and installation of counterweight assembly 20
UEN06259-02
PC300, 350LC-8M0 00-100 11
100 Index
Table of contents
500 Hydraulic system UEN06349-00
Removal and installation of center swivel joint assembly 2
Disassembly and assembly of center swivel joint assembly 4
Removal and installation of hydraulic tank assembly 5
Removal and installation of control valve assembly 7
Disassembly and assembly of control valve assembly 10
Removal and installation of hydraulic pump assembly 15
Removal and installation of hydraulic pump input shaft oil seal 18
Disassembly and assembly of work equipment PPC valve assembly 19
Disassembly and assembly of travel PPC valve assembly 21
Disassembly and assembly of work equipment cylinder assembly 23
600 Work equipment UEN06350-00
Removal and installation of work equipment assembly 2
700 Cab and its attachments UEN06351-00
Removal and installation of operator’s cab assembly 2
Removal and installation of operator’s cab glass (adhered window glass) 5
Removal and installation of front window assembly 14
Removal and installation of floor frame assembly 20
800 Electrical system UEN06352-00
Removal and installation of air conditioner unit assembly 2
Removal and installation of KOMTRAX terminal assembly 7
Removal and installation of machine monitor assembly 9
Removal and installation of pump controller assembly 11
Removal and installation of engine controller assembly 13
80 Appendix
100 Air conditioner UEN06365-00
Precautions for refrigerant 3
Air conditioner component 4
Configuration and function of refrigeration cycle 6
Outline of refrigeration cycle 7
Air conditioner unit 9
Air conditioner controller 15
Compressor 16
Condenser 17
Receiver drier 18
Sensor 19
Procedure for testing and troubleshooting 20
Circuit diagram and arrangement of connector pins 22
System diagram 24
Parts and connectors layout 26
Testing air leakage (duct) 29
Testing with self-diagnosis function 31
Testing vent (mode) changeover 33
Testing FRESH/RECIRC air changeover 34
Testing sunlight sensor 35
Testing (dual) pressure switch for refrigerant 36
Testing relays 37
Troubleshooting chart 1 38
Troubleshooting chart 2 40
Information in troubleshooting table 42
Failure code list related to air conditioner 43
Failure code [879AKA] A/C Inner sensor Open Circuit 44
Failure code [879AKB] A/C Inner sensor Short Circuit 45
Failure code [879BKA] A/C Outer sensor Open Circuit 46
Failure code [879BKB] A/C Outer sensor Short Circuit 48
Failure code [879CKA] Ventilating sensor Open Circuit 50
UEN06259-02
00-100 12 PC300, 350LC-8M0
100 Index
Table of contents
Failure code [879CKB] Ventilating sensor Short Circuit 51
Failure code [879DKZ] Sunlight sensor Open or Short Circuit 52
Failure code [879EMC] Ventilating Damper Abnormality 54
Failure code [879FMC] Air Mix Damper Abnormality 55
Failure code [879GKX] Refrigerant Abnormality 56
Troubleshooting for power supply and CAN communication system (Air conditioner does not operate)
58
Troubleshooting for compressor and refrigerant system (Air is not cooled) 60
Troubleshooting for blower motor system (No air comes out or air flow is abnormal) 63
Troubleshooting for FRESH/RECIRC air changeover 65
Troubleshooting with gauge pressure 67
Connection of service tool 69
Precautions for disconnecting and connecting air conditioner piping 71
Handling of compressor oil 73
90 Diagrams and drawings
100 Hydraulic diagrams and drawings UEN06273-00
Symbols in hydraulic circuit diagram 2
Hydraulic circuit diagram 5
200 Electrical diagrams and drawings UEN06274-00
Symbols in electric circuit diagram 2
Electrical circuit diagram 5

DESCRIPTION:

Komatsu PC300-8M0 PC350LC-8M0 Hydraulic Excavator Shop Manual UENBM00410 – PDF DOWNLOAD 

SERIAL NUMBERS
PC300-8M0 K56001 and up
PC350LC-8M0 K52001 and up

Composition of shop manual
q This shop manual describes the technical information required for the services performed in a workshop.
The shop manual is divided into the following chapters for the convenience of use.
00. Index and foreword
q This section includes the index, foreword, safety and basic information.
01. Specification
q This section explains the specifications of the machine.
10. Structure, function and maintenance standard
q This section explains the structure, function, and maintenance standard values of each component. The
structure and function sub-section explains the structure and function of each component. It serves not
only to give an understanding of the structure, but also serves as reference material for troubleshooting.
The maintenance standard sub-section explains the criteria and remedies for disassembly and service.
20. Standard value table
q The standard values for a new machine and trouble shooting are described. This standard value table is
used for testing and adjusting, and determining a failure at troubleshooting.
30. Testing and adjusting
q This section describes the measuring tools and how to measure, and how to adjust various parts. As for
the standard value and failure criterion, see the standard value table.
40. Troubleshooting
q This section describes the troubleshooting in a suspected area when a failure occurs and the remedy for
the failure. Troubleshooting is described by each failure mode.
50. Disassembly and assembly
q This section explains the procedures for removing, installing, disassembling, and assembling each part
or component and the special tools for the works as well as precautions for doing them safely. In addition,
tightening torque, and quantity and weight of coating material, oil, grease, and coolant required for
the works are also explained.
80. Appendix
q The structure and function, testing and adjusting, and troubleshooting for all of the other components or
equipment which can not be separately classified are explained together in the appendix.
90. Diagrams and drawings
q This section gives hydraulic circuit diagrams and electrical circuit diagrams.

IMAGES PREVIEW OF THE MANUAL:

S.V 28/12/24