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Komatsu PC88MR-10 Mini Excavator Service Manual

1,436 pages · Publication SEN06467-04

$149.61
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Models
PC88MR-10
Serial coverage
7001 and up
Manual type
Service Manual
Pages
1,436
Publication
SEN06467-04
Condition
Brand new
Komatsu PC88MR-10 Mini Excavator Service Manual, publication SEN06467-04

What's inside

From the manual's own table of contents: 300 sections, 542 entries. See sample pages (PDF, 809 KB)

Index and foreword
Foreword, safety and general information
Important safety notice
How to read the shop manual
Explanation of terms for maintenance standard
Handling equipment of fuel system devices
Handling of intake system parts
Handling of hydraulic equipment
Method of disconnecting and connecting of push-pull type coupler
Handling of electrical equipment
How to read electric wire code
Precautions when performing operation
Practical use of KOMTRAX
Standard tightening torque table
List of abbreviation
Conversion table
Specification
Specifications
Specification drawing
Working range drawings
Weight table
Table of fuel, coolant, and lubricants
Structure and function
Engine and cooling system
Show all 300 sections
Engine related parts
Variable flow turbocharger
EGR system piping drawing
EGR system circuit diagram
EGR valve
EGR cooler
KCCV layout drawing
KCCV ventilator
KDOC muffler
Cooling system
Power train
Power train system
Swing circle
Swing machinery
Undercarriage and frame
Track frame
Idler cushion
Hydraulic system
Hydraulic component layout
Valve control
Hydraulic tank
CLSS
Main pump
Control valve
Swing motor
Travel motor
Work equipment and swing PPC valve
Travel PPC valve
Blade PPC valve7 topics
  • Boom swing PPC valve
  • Solenoid valve
  • Multi-control valve
  • Anti-drop valve for boom
  • Anti-drop valve for arm
  • Center swivel joint
  • Accumulator
Work equipment2 topics
  • Work equipment shim
  • Bucket play adjustment shim
Cab and its attachments2 topics
  • Cab mount and cab tipping stopper
  • ROPS cab
Electrical system4 topics
  • Electrical control system
  • Machine monitor system
  • KOMTRAX system
  • Sensor
Standard value tables
Standard service value table3 topics
  • Standard value table for engine
  • Standard value table for machine
  • Standard value table for electrical system
Testing and adjusting
Related information on testing and adjusting27 topics
  • Tools for testing and adjusting
  • Sketch of tools for testing and adjusting
  • Testing engine speed
  • Testing exhaust gas color
  • Testing and adjusting valve clearance
  • Testing compression pressure
  • Testing blowby pressure
  • Testing engine oil pressure
  • Testing fuel pressure
  • Testing fuel return rate and leakage
  • Bleeding air from fuel system
  • Testing fuel circuit for leakage
  • Handling cylinder cutout mode operation
  • Handling no-injection cranking operation
  • Testing and adjusting air conditioner compressor belt tension
  • Check fan belt, replace
  • Check auto-tensioner, replace
  • Writing compensation values at replacement of injector and engine controller
  • Testing swing circle bearing clearance
  • Testing and adjusting track tension
  • Releasing remaining pressure from hydraulic circuit
  • Testing and adjusting oil pressure in work equipment and travel circuits
  • Testing and adjusting swing and blade circuit oil pressure
  • Testing oil pressure of control circuit
  • Testing and adjusting oil pressure in pump PC control circuit
  • Testing and adjusting oil pressure in pump LS control circuit
  • Testing outlet pressure of solenoid valve
Testing PPC valve outlet pressure
Adjusting play of work equipment and swing PPC valves
Isolating the parts causing hydraulic drift in work equipment
Testing and adjusting travel deviation
Testing oil leakage
Bleeding air from hydraulic circuit
Testing, cleaning and lubricating slide door rail and roller
Adjusting mirrors
Testing and adjusting hood catcher
Special functions of machine monitor
KOMTRAX terminal start-up procedure
Adjusting rearview camera angle
Handling voltage circuit of engine controller
Handling battery disconnect switch
Testing diodes
Pm clinic
Pm Clinic service
Troubleshooting
Related information on troubleshooting
Troubleshooting points
Sequence of events in troubleshooting
Checks before troubleshooting
Inspection procedure before troubleshooting
Preparation for troubleshooting of electrical system
Classification and procedures for troubleshooting
Symptom and troubleshooting numbers
Information in troubleshooting table
Troubleshooting method for open circuit in wiring harness of pressure sensor system
Connector list and layout
Connector contact identification
T-branch box and T-branch adapter table
Fuse location table
Failure codes table
Troubleshooting by failure code (Display of code)
Failure code [879AKA] A/C Recirc Air Temp Sens Open Circuit
Failure code [879AKB] A/C Recirc Air Temp Sens Short
Failure code [879BKA] A/C Fresh Air Temp Sens Open Circuit
Failure code [879BKB] A/C Fresh Air Temp Sens Short Circuit
Failure code [879CKA] Ventilating Sensor Open Circuit
Failure code [879CKB] Ventilating Sensor Short Circuit
Failure code [879DKZ] Sunlight Sensor Open or Short Circuit
Failure code [879EMC] Ventilation Damper Malfunction
Failure code [879FMC] Air Mix Damper Malfunction
Failure code [879GKX] Refrigerant Press Input Sig Out of Range
Failure code [989L00] Engine Controller Lock Caution 1
Failure code [989M00] Engine Controller Lock Caution 2
Failure code [989N00] Engine Controller Lock Caution 3
Failure code [A900FR] Abrupt Engine Stop by Auto Idle Stop 3
Failure code [A900N6] Abrupt Engine Stop by Auto Idle Stop 1
Failure code [A900NY] Abrupt Engine Stop by Auto Idle Stop 2
Failure code [AB00KE] Charge Voltage Low
Failure code [B@BAZG] Eng Oil Press Low
Failure code [B@BCNS] Eng Water Overheat
Failure code [CA115] Eng Ne and Bkup Speed Sens Error
Failure code [CA122] Charge Air Pressure Sensor High Error
Failure code [CA123] Charge Air Pressure Sensor Low Error59 topics
  • Failure code [CA131] Throttle Sensor High Error
  • Failure code [CA132] Throttle Sensor Low Error
  • Failure code [CA144] Coolant Temperature Sensor High Error
  • Failure code [CA145] Coolant Temperature Sensor Low Error
  • Failure code [CA153] Charge Air Temperature Sensor High Error
  • Failure code [CA154] Charge Air Temperature Sensor Low Error
  • Failure code [CA187] Sensor 2 Supply Voltage Low Error
  • Failure code [CA221] Ambient Pressure Sensor High Error
  • Failure code [CA222] Ambient Pressure Sensor Low Error
  • Failure code [CA227] Sensor 2 Supply Voltage High Error
  • Failure code [CA234] Engine Overspeed
  • Failure code [CA238] NE Speed Sensor Supply Voltage Error
  • Failure code [CA239] NE Speed Sensor Supply Voltage High Error
  • Failure code [CA271] PCV1 Short Circuit Error
  • Failure code [CA272] PCV1 Open Circuit Error
  • Failure code [CA322] Injector #1 (L#1) Open or Short Circuit
  • Failure code [CA324] Injector #3 (L#3) Open or Short Circuit
  • Failure code [CA331] Injector #2 (L#2) Open or Short Circuit
  • Failure code [CA332] Injector #4 (L#4) Open or Short Circuit
  • Failure code [CA343] Engine Controller Internal Failure
  • Failure code [CA351] Injectors Drive Circuit Error
  • Failure code [CA352] Sensor1 Supply Voltage Low Error
  • Failure code [CA356] MAF Sensor High Error
  • Failure code [CA357] MAF Sensor Low Error
  • Failure code [CA386] Sensor1 Supply Voltage High Error
  • Failure code [CA435] Engine Oil Pressure SW Error
  • Failure code [CA441] Battery Voltage Low Error
  • Failure code [CA442] Battery Voltage High Error
  • Failure code [CA449] Common Rail Pressure High Error 2
  • Failure code [CA451] Common Rail Pressure Sensor High Error
  • Failure code [CA452] Common Rail Pressure Sensor Low Error
  • Failure code [CA466] KVGT Motor Driver Position Error
  • Failure code [CA515] Rail Pressure Sensor Sup Volt High Error
  • Failure code [CA516] Rail Pressure Sensor Sup Volt Low Error
  • Failure code [CA553] Common Rail Pressure High Error 1
  • Failure code [CA555] Crankcase Pressure High Error 1
  • Failure code [CA556] Crankcase Pressure High Error 2
  • Failure code [CA559] Common Rail Pressure Low Error 1
  • Failure code [CA689] Engine NE Speed Sensor Error
  • Failure code [CA691] Intake Air Temperature Sensor High Error
  • Failure code [CA692] Intake Air Temperature Sensor Low Error
  • Failure code [CA697] Engine Con Internal Temp Sens High Error
  • Failure code [CA698] Engine Con Internal Temp Sens Low Error
  • Failure code [CA731] Engine Backup Speed Sensor Phase Error
  • Failure code [CA778] Engine Backup Speed Sensor Error
  • Failure code [CA1117] Engine Controller Partial Data Lost Error
  • Failure code [CA1695] Sensor 5 Supply Voltage High Error
  • Failure code [CA1696] Sensor 5 Supply Voltage Low Error
  • Failure code [CA1843] Crankcase Pressure Sensor High Error
  • Failure code [CA1844] Crankcase Pressure Sensor Low Error
  • Failure code [CA1896] EGR Valve Stuck Error
  • Failure code [CA1942] Crankcase Pressure Sensor In Range Error
  • Failure code [CA1961] EGR_Motor Driver IC Over Temp Error
  • Failure code [CA2185] Throttle Sensor Supply Voltage High Error
  • Failure code [CA2186] Throttle Sensor Supply Voltage Low Error
  • Failure code [CA2249] Common Rail Pressure Low Error 2
  • Failure code [CA2272] EGR Valve Position Sensor Low Error
  • Failure code [CA2311] IMV Solenoid Error
  • Failure code [CA2349] EGR Valve Solenoid Open Circuit Error
Failure code [CA2353] EGR Valve Solenoid Short Circuit Error
Failure code [CA2357] EGR Valve Servo Error
Failure code [CA2765] Injector Trim Data Mismatch
Failure code [CA3419] MAF Sensor Supply Voltage High Error
Failure code [CA3421] MAF Sensor Supply Voltage Low Error
Failure code [CA3724] EGR/KVGT Motor Driver Power Low Error
Failure code [CA3918] KVGT Stuck Error
Failure code [CA3919] KVGT Motor Driver IC Over Temp Error
Failure code [CA3921] KVGT Servo Error 2
Failure code [CA3922] KVGT Motor Driver Open Error
Failure code [CA3923] KVGT Motor Driver Short Error
Failure code [D110KB] Battery Relay Output Short Circuit
Failure code [D19JKZ] Personal Code Relay Open or Short
Failure code [D811MC] KOMTRAX Malfunction
Failure code [D862KA] GPS Antenna Open Circuit
Failure code [D8ALKA] Operating Lamp Open Circuit (KOMTRAX)
Failure code [D8ALKB] Operating Lamp Short Circuit (KOMTRAX)
Failure code [D8AQKR] CAN 2 Defective Communication (KOMTRAX)
Failure code [DA20MC] Pump Controller Malfunction
Failure code [DA22KK] Pump Con Solenoid Power Volt Low Error
Failure code [DA25KP] 5V Sensor 1 Power Voltage Low Error
Failure code [DA29KQ] Model Selection Sig Mismatch (Pump Con)
Failure code [DA2LKA] Operating Lamp Open Circuit (Pump Con)
Failure code [DA2LKB] Operating Lamp Short Circuit (Pump Con)
Failure code [DA2QKR] CAN 2 Defective Communication (Pump Con)
Failure code [DA2RKR] CAN 1 Defective Communication (Pump Con)
Failure code [DAF0MB] Monitor ROM Abnormality
Failure code [DAF0MC] Monitor Malfunction
Failure code [DAF8KB] Camera Power Supply Short Circuit
Failure code [DAF9KQ] Model Selection Signal Mismatch (Monitor)
Failure code [DAFGMC] GPS Module Malfunction
Failure code [DAFLKA] Operating Lamp Open Circuit (Monitor)
Failure code [DAFLKB] Operating Lamp Short Circuit (Monitor)
Failure code [DAFQKR] CAN 2 Defective Communication (Monitor)
Failure code [DAZ9KQ] Model Selection Sig Mismatch (A/C)
Failure code [DAZQKR] CAN2 Defective Communication (A/C ECU)
Failure code [DB2QKR] CAN2 Defective Communication (Engine Con)
Failure code [DB2RKR] CAN1 Defective Communication (Engine Con)
Failure code [DDNRKA] WE Lever Lock SW Open Circuit
Failure code [DDNRKY] WE Lever Lock SW Short Circuit
Failure code [DDNS00] Lock Lever Auto Lock Release SW On
Failure code [DGH2KB] Hydraulic Oil Temp Sensor Ground Fault
Failure code [DHPAMA] Front Pump Press Sens Defective Function
Failure code [DHS3MA] Arm IN PPC Press Sensor Def Function
Failure code [DHS4MA] Bucket CURL PPC Press Sens Def Function
Failure code [DHS5MA] Travel PPC Sensor Abnormality
Failure code [DHS8MA] Boom Raise PPC Press Sens Def Function
Failure code [DHS9MA] Boom Lower PPC Press Sens Def Function
Failure code [DHSAMA] Swing Right PPC Press Sens Def Function
Failure code [DHSBMA] Swing Left PPC Press Sensor Def Function
Failure code [DHSCMA] Arm OUT PPC Press Sens Def Function
Failure code [DHSDMA] Bucket DUMP PPC Press Sens Def Function
Failure code [DHSPMA] Boom Swing LH PPC Press Sensor Abnormality
Failure code [DHSQMA] Boom Swing RH PPC Press Sensor Abnormality
Failure code [DKULKA] PPC Lock Relay Open Circuit
Failure code [DKULKB] PPC Lock Relay Short Circuit
Failure code [DKULKY] PPC Lock Relay Hot Short Circuit
Failure code [DV20KB] Travel Alarm Short Circuit
Failure code [DW43KA] Travel Speed Solenoid Open Circuit21 topics
  • Failure code [DW43KB] Travel Speed Solenoid Short Circuit
  • Failure code [DW43KY] Travel Speed Sol Hot Short Circuit
  • Failure code [DW45KA] Swing Parking Brake Solenoid Open Circuit
  • Failure code [DW45KB] Swing Parking Brake Solenoid Short Circuit
  • Failure code [DW45KY] Swing Brake Sol Hot Short Circuit
  • Failure code [DW4CKY] PPC lock Sol Hot Short Circuit
  • Failure code [DWJ0KA] Merge-divider Sol Open Circuit
  • Failure code [DWJ0KB] Merge-divider Sol Short Circuit
  • Failure code [DWJ0KY] Merge-divider Sol Short Circuit
  • Failure code [DXA8KA] Front Pump PC-EPC Solenoid Open Circuit
  • Failure code [DXA8KB] Front Pump PC-EPC Solenoid Short Circuit
  • Failure code [DXE7KA] Attachment Flow Regulating EPC 2 Solenoid Open Circuit
  • Failure code [DXE7KB] Att Flow Regulating EPC 2 Short Circuit
  • Failure code [DXEAKA] Att Flow Regulating EPC 5 Open Circuit
  • Failure code [DXEAKB] Att Flow Regulating EPC 5 Short Circuit
  • Failure code [DXEAKY] Service Current EPC5 Hot Short Circuit
  • Failure code [DY20KA] Wiper Motor Open Circuit
  • Failure code [DY20MA] Wiper Motor Defective Function
  • Failure code [DY2CKB] Washer Motor Short Circuit
  • Failure code [DY2DKB] Wiper Motor (Normal) Short Circuit
  • Failure code [DY2EKB] Wiper Motor (Reverse) Short Circuit
Troubleshooting of electrical system (E-mode)21 topics
  • Engine does not start (Engine does not crank)
  • Manual preheating system does not work
  • While preheating is working, preheating monitor does not light up
  • When starting switch is turned to ON position, machine monitor displays nothing
  • Engine coolant temperature monitor lights up in white while engine is running
  • Hydraulic oil temperature monitor lights up in white while engine is running
  • Charge level monitor lights up while engine is running
  • Fuel level monitor lights up in red while engine is running
  • Engine coolant temperature monitor lights up in red while engine is running
  • Hydraulic oil temperature monitor lights up in red while engine is running
  • Engine oil pressure monitor lights up in red while engine is running
  • Fuel gauge display does not move from minimum or maximum
  • Fuel gauge indicates incorrect amount (indicates neither full nor empty)
  • Hydraulic oil temperature gauge does not move from minimum or maximum
  • Some areas of machine monitor screen are not displayed
  • Function switch does not work
  • Automatic warm-up system does not operate (in cold season)
  • Travel speed monitor does not change when travel speed switch is operated
  • Travel speed does not change while travel speed selection is changed
  • Alarm buzzer does not stop sounding
  • Service meter is not displayed, while starting switch is in OFF position
Service mode cannot be selected
Any of work equipment, swing and travel does not work
Any of work equipment, swing and travel cannot be locked2 topics
  • CANCEL position
    • position
Alarm does not sound during travel
Alarm does not stop sounding while machine is stopped
Horn does not sound
Horn does not stop sounding1 topic
  • operated
Wiper does not operate while wiper switch is operated
Window washer does not operate while window washer switch is operated
Boom LOWER is not displayed correctly with monitoring function
Arm OUT is not displayed correctly with monitoring function
Arm IN is not displayed correctly with monitoring function
Boom RAISE is not displayed correctly with monitoring function
Bucket CURL is not displayed correctly with monitoring function
Bucket DUMP is not displayed correctly with monitoring function
Boom swing left is not displayed correctly with monitoring function
Boom swing right is not displayed correctly with monitoring function
Swing is not displayed correctly with monitoring function
Travel is not displayed correctly with monitoring function
Blade RAISE ON is not displayed correctly with monitoring function
Blade LOWER ON is not displayed correctly with monitoring function
KOMTRAX system does not operate normally
Troubleshooting of hydraulic and mechanical system (H-mode)
Information described in troubleshooting table (H-mode)
System chart of hydraulic and mechanical systems
Failure mode and cause table
All of work equipments, swing and travel operations lack speed or power
Engine speed drops significantly or engine stalls
Unusual sound is heard from around hydraulic pump
Fine control performance or response is poor
Boom speed or power is low
Arm speed or power is low
Bucket speed or power is low
Boom swing speed or power is low
Blade speed or power is low
Work equipment does not move in single operation
Hydraulic drift of boom is large
Hydraulic drift of arm is large
Hydraulic drift of bucket is large
Hydraulic drift of blade is large
Time lag of work equipment is large1 topic
  • slower
In combined operation of swing and boom RAISE, boom rising speed is low1 topic
  • largely
Machine does not travel straight
Travel speed is slow
Machine is hard to steer or travel power is low
Travel speed does not change, or travel speed is too slow or fast10 topics
  • One of tracks does not run
  • Upper structure does not swing to the right or left
  • Upper structure swing only to the right or left
  • Swing acceleration or swing speed is low in both directions (right and left)
  • Upper structure overruns excessively when it stops swinging (either right or left)
  • Shock is large when upper structure stops swinging
  • Large unusual noise is heard when upper structure stops swinging
  • Swing drift on a slope is large while swing parking brake is applied
  • Swing drift on a slope is large while swing parking brake is released
  • Oil flow in attachment circuit cannot be controlled
Troubleshooting of engine (S-mode)20 topics
  • Information mentioned in troubleshooting table (S mode)
  • Engine does not crank when starting switch is turned to START position
  • Engine cranks but no exhaust smoke comes out
  • Engine startability is poor
  • Engine does not pick up smoothly
  • Engine stops during operation
  • Engine runs rough or is unstable
  • Engine lacks power
  • Exhaust smoke is black
  • Engine oil consumption is excessive
  • Oil becomes contaminated quickly
  • Fuel consumption is excessive
  • Oil is in coolant (or coolant spurts or coolant level goes down)
  • Oil pressure drops
  • Fuel mixes into engine oil
  • Water mixes into engine oil (milky)
  • Coolant temperature rises too high (overheating)
  • Unusual noise is heard
  • Vibration is excessive
  • Air cannot be bled from fuel circuit
Disassembly and assembly
Related information on disassembly and assembly18 topics
  • How to read this manual
  • Coating materials list
  • Special tools list
  • Sketches of special tools
  • Removal and installation of supply pump assembly
  • Removal and installation of injector assembly
  • Removal and installation of cylinder head assembly
  • Removal and installation of radiator assembly
  • Removal and installation of hydraulic oil cooler assembly
  • Removal and installation of aftercooler assembly
  • Removal and installation of engine and main pump assembly
  • Removal and installation of engine front oil seal
  • Removal and installation of engine rear oil seal
  • Removal and installation of fuel cooler assembly
  • Removal and installation of fuel tank assembly
  • Removal and installation of engine hood assembly
  • Removal and installation of KDOC muffler
  • Removal and installation of KCCV ventilator
Removal and installation of air cleaner assembly
Removal and installation of EGR (Exhaust Gas Recirculation) cooler assembly
Removal and installation of EGR (Exhaust Gas Recirculation) valve assembly
Removal and installation of fan belt
Removal and installation of travel motor and final drive assembly
Disassembly and assembly of travel motor and final drive assembly
Removal and installation of swing motor and swing machinery assembly
Disassembly and assembly of swing machinery assembly
Removal and installation of swing circle assembly
Separation and connection of track
Removal and installation of sprocket
Removal and installation of idler and idler cushion assembly
Disassembly and assembly of idler assembly
Disassembly and assembly of idler cushion assembly
Disassembly and assembly of track roller assembly
Removal and installation of revolving frame assembly1 topic
  • counterweight]
Removal and installation of center swivel joint assembly
Disassembly and assembly of center swivel joint assembly
Removal and installation of hydraulic tank assembly
Removal and installation of main pump assembly
Removal and installation of control valve assembly
Disassembly and assembly of control valve assembly
Disassembly and assembly of work equipment PPC valve assembly
Disassembly and assembly of travel PPC valve assembly
Disassembly and assembly of work equipment cylinder assembly
Removal and installation of work equipment assembly
Removal and installation of boom swing bracket
Removal and installation of anti-drop valve for boom assembly
Removal and installation of anti-drop valve for arm assembly
Disassembly and assembly of anti-drop valve assembly
Removal and installation of blade assembly
Removal and installation of operator's cab assembly
Removal and installation of operator's cab door
Removal and installation of operator's cab glass (adhered glass)
Removal and installation of front window assembly
Removal and installation of floor frame assembly
Removal and installation of air conditioner unit assembly
Removal and installation of air conditioner compressor assembly
Removal and installation of air conditioner condenser assembly
Removal and installation of operator's seat
Removal and installation of seat belt
Removal and installation of front wiper assembly
Removal and installation of starting motor assembly
Removal and installation of engine controller assembly
Removal and installation of pump controller assembly
Removal and installation of machine monitor assembly
Removal and installation of mass air flow and temperature sensor
Removal and installation of KOMTRAX terminal assembly
Maintenance standard16 topics
  • Engine mount
  • Cooling system
  • Swing circle
  • Swing machinery
  • Sprocket
  • Track frame
  • Idler cushion
  • Idler
  • Track roller
  • Carrier roller
  • Track shoe
  • Hydraulic tank
  • Main pump
  • Control valve
  • Swing motor
  • Travel motor
PPC valve8 topics
  • Work equipment and swing PPC valve
  • Travel PPC valve
  • Blade PPC valve
  • Boom cylinder
  • Arm cylinder
  • Bucket cylinder
  • Boom swing cylinder
  • Blade cylinder
Appendix
Air conditioner components17 topics
  • Precautions for refrigerant
  • Air conditioner component
  • Configuration and function of refrigeration cycle
  • Outline of refrigeration cycle
  • Air conditioner unit
  • Dual pressure switch
  • Air conditioner controller
  • Compressor
  • Condenser
  • Sunlight sensor
  • Outer temperature sensor (outside air temperature sensor)
  • Procedure for testing and troubleshooting
  • Circuit diagram and arrangement of connector pins
  • System diagram
  • Input and output signals of the air conditioner controller
  • Parts and connectors layout
  • Testing air leakage (duct)
Testing with self-diagnosis function
Testing vent (mode) changeover
Testing FRESH/RECIRC air changeover
Testing sunlight sensor
Testing (dual) pressure switch for refrigerant
Testing relays
Troubleshooting chart 1
Troubleshooting chart 2
Failure code list related to air conditioner
Troubleshooting for power supply system (Air conditioner does not operate)
Troubleshooting for compressor and refrigerant system (Air is not cooled)1 topic
  • abnormal)
Troubleshooting for FRESH/RECIRC air changeover
Troubleshooting with gauge pressure
Connection of service tool
Precautions for disconnecting and connecting refrigerant piping
Handling of compressor oil
Diagrams and drawings
Hydraulic circuit diagram
Symbols in hydraulic circuit diagram
Electric circuit diagram
Symbols in electric circuit diagram
Electrical circuit diagram
Electrical circuit diagram of air conditioner unit

Inside this manual

Real pages from this service manual (1,436 pages). Open the sample pages (PDF, 808 KB)

Sample pages from the Komatsu PC88MR-10 Mini Excavator Service Manual: Troubleshooting, Diagram, Specifications, Foldout diagram
  • Troubleshooting, page 676: Troubleshooting by failure code (Display of code)
  • Diagram, page 940: Troubleshooting of electrical system (E-mode)
  • Specifications, page 1,314: 60 Maintenance standard
  • Foldout diagram, page 1,421: Electrical circuit diagram (1/5)

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Details

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This manual

Service manual

Factory repair procedures and technical information such as specifications, troubleshooting, and wiring and hydraulic diagrams, for the models and systems the manual covers. See What's inside for its topics.

Operator's manual

Safe operation, controls, maintenance schedules, lubrication points, inspections, and basic checks. Repair procedures are in the service manual.

Parts manual

Illustrated diagrams with factory part numbers for identifying components and ordering parts. Repair procedures are in the service manual.

Engine service manuals are sometimes sold separately, since certain machine models were offered with more than one engine option.

What it's used for

Factory manual for in-house farm and construction shop use. Straightforward, complete, and easy to follow. It contains the OEM information dealership service departments and parts counters use to diagnose problems, identify components, and perform maintenance or repairs correctly.

Service shops and owner/operators who repair their own equipment

Identifying correct parts and seeing how assemblies come apart and go back together

Keeping equipment running with less downtime

Factory manual, 1,436 pages

Quantity one is the manual described above.

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