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Komatsu PC170LC-10 Hydraulic Excavator Service Manual

1,455 pages · Publication SEN06367-03

$149.69
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Models
PC170LC-10
Serial coverage
30001 and up
Manual type
Service Manual
Pages
1,455
Publication
SEN06367-03
Condition
Brand new
Komatsu PC170LC-10 Hydraulic Excavator Service Manual, publication SEN06367-03

What's inside

From the manual's own table of contents: 295 sections, 542 entries. See sample pages (PDF, 871 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 295 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
Final drive
Undercarriage and frame
Track frame and idler cushion
Hydraulic system
Hydraulic component layout
Valve control
Hydraulic tank
CLSS
Main pump
Control valve
Swing motor
Travel motor
PPC valve
Solenoid valve
Attachment circuit selector valve (for high pressure circuit)3 topics
  • Attachment circuit selector valve (for low pressure circuit)
  • 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 adjusting31 topics
  • Tools for testing and adjusting
  • Sketch of tools for testing and adjusting
  • Testing engine speed
  • Testing boost pressure
  • Testing exhaust gas color
  • Testing and adjusting valve clearance
  • Testing compression pressure
  • Testing blowby pressure
  • Testing engine oil pressure
  • Testing fuel pressure
  • Testing fuel discharge, return 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
  • Replacing fan belt
  • Testing swing circle bearing clearance
  • Testing and adjusting track tension
  • Releasing remaining pressure from hydraulic circuit
  • Testing oil pressure of control circuit
  • Testing and adjusting oil pressure in work equipment, swing, and travel circuits
  • 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
  • Testing pump swash plate sensor
  • Isolating the parts causing hydraulic drift in work equipment
  • Testing and adjusting travel deviation
  • Testing oil leakage
Bleeding air from hydraulic circuit
Testing cab tipping stopper
Adjusting mirrors
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 work for troubleshooting of electrical system
Classification and procedure for troubleshooting
Symptom and troubleshooting numbers
Information in troubleshooting table1 topic
  • circuit
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 Inner Sensor Open Circuit
Failure code [879AKB] A/C Inner Sensor Short Circuit
Failure code [879BKA] A/C Outer Sensor Open Circuit
Failure code [879BKB] A/C Outer Sensor 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 Abnormality
Failure code [879FMC] Air Mix Damper Abnormality
Failure code [879GKX] Refrigerant Abnormality
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 [AA10NX] Air Cleaner Clogging
Failure code [AB00KE] Charge Voltage Low
Failure code [B@BAZG] Eng Oil Press Low
Failure code [B@BAZK] Eng Oil Level Low
Failure code [B@BCNS] Eng Water Overheat
Failure code [B@BCZK] Eng Water Level Low
Failure code [B@HANS] Hyd Oil Overheat
Failure code [CA115] Eng Ne and Bkup Speed Sens Error
Failure code [CA122] Chg Air Press Sensor High Error
Failure code [CA123] Chg Air Press Sensor Low Error
Failure code [CA131] Throttle Sensor High Error
Failure code [CA132] Throttle Sensor Low Error
Failure code [CA144] Coolant Temp Sens High Error
Failure code [CA145] Coolant Temp Sens Low Error59 topics
  • Failure code [CA153] Chg Air Temp Sensor High Error
  • Failure code [CA154] Chg Air Temp Sensor Low Error
  • Failure code [CA187] Sensor 2 Supply Volt Low Error
  • Failure code [CA221] Ambient Press Sensor High Error
  • Failure code [CA222] Ambient Press Sens Low Error
  • Failure code [CA227] Sensor 2 Supply Volt High Error
  • Failure code [CA234] Eng Overspeed
  • Failure code [CA238] Ne Speed Sensor Supply Volt Error
  • Failure code [CA239] Ne Speed Sens Supply Volt High Error
  • Failure code [CA271] IMV/PCV1 Short Error
  • Failure code [CA272] IMV/PCV1 Open Error
  • Failure code [CA295] Ambient Press Sens In Range Error
  • Failure code [CA322] Inj #1(L#1) Open/Short Error
  • Failure code [CA324] Inj #3(L#3) Open/Short Error
  • Failure code [CA331] Inj #2(L#2) Open/Short Error
  • Failure code [CA332] Inj #4(L#4) Open/Short Error
  • Failure code [CA343] ECM Critical Internal Failure
  • Failure code [CA351] Injectors Drive Circuit Error
  • Failure code [CA352] Sensor 1 Supply Volt Low Error
  • Failure code [CA356] Mass Air Flow Sensor High Error
  • Failure code [CA357] Mass Air Flow Sensor Low Error
  • Failure code [CA386] Sensor 1 Supply Volt High Error
  • Failure code [CA428] Water in Fuel Sensor High Error
  • Failure code [CA429] Water in Fuel Sensor Low Error
  • Failure code [CA435] Eng Oil Press Sw Error
  • Failure code [CA441] Battery Voltage Low Error
  • Failure code [CA442] Battery Voltage High Error
  • Failure code [CA449] Rail Press Very High Error
  • Failure code [CA451] Rail Press Sensor High Error
  • Failure code [CA452] Rail Press Sensor Low Error
  • Failure code [CA466] KVGT Motor Driver Position Error
  • Failure code [CA488] Chg Air Temp High Torque Derate
  • Failure code [CA515] Rail Press Sens Sup Volt High Error
  • Failure code [CA516] Rail Press Sens Sup Volt Low Error
  • Failure code [CA553] Rail Press High Error
  • Failure code [CA555] Crankcase Press High Error 1
  • Failure code [CA556] Crankcase Press High Error 2
  • Failure code [CA559] Rail Press Low Error
  • Failure code [CA689] Eng Ne Speed Sensor Error
  • Failure code [CA691] Intake Air Temp Sens High Error
  • Failure code [CA692] Intake Air Temp Sens Low Error
  • Failure code [CA697] ECM Internal Temp Sensor High Error
  • Failure code [CA698] ECM Int Temp Sensor Low Error
  • Failure code [CA731] Eng Bkup Speed Sens Phase Error
  • Failure code [CA778] Eng Bkup Speed Sensor Error
  • Failure code [CA1117] Persistent Data Lost Error
  • Failure code [CA1695] Sensor 5 Supply Volt High Error
  • Failure code [CA1696] Sensor 5 Supply Volt Low Error
  • Failure code [CA1843] Crankcase Press Sens High Error
  • Failure code [CA1844] Crankcase Press Sens Low Error
  • Failure code [CA1896] EGR Valve Stuck Error
  • Failure code [CA1942] Crankcase Press Sens In Range Error
  • Failure code [CA1961] EGR_Motor Driver IC Over Temp Error
  • Failure code [CA2185] Throt Sensor Sup Volt High Error
  • Failure code [CA2186] Throt Sensor Sup Volt Low Error
  • Failure code [CA2249] Rail Press Very Low Error
  • Failure code [CA2272] EGR Valve Pos Sens Low Error
  • Failure code [CA2311] IMV Solenoid Error
  • Failure code [CA2349] EGR Valve Solenoid Open Error
Failure code [CA2353] EGR Valve Solenoid Short Error
Failure code [CA2357] EGR Valve Servo Error
Failure code [CA2373] Exhaust Manifold Press Sens High Error
Failure code [CA2374] Exhaust Manifold Press Sens Low Error
Failure code [CA2375] EGR Orifice Temp Sens High Error
Failure code [CA2376] EGR Orifice Temp Sens Low Error
Failure code [CA2554] Exh Manifold Press Sens In Range Error
Failure code [CA2555] Grid Htr Relay Volt Low Error
Failure code [CA2556] Grid Htr Relay Volt High Error
Failure code [CA2961] EGR Orifice Temp High Error 1
Failure code [CA2973] Chg Air Press Sensor In Range Error
Failure code [CA3419] Mass Air Flow Sensor Sup Volt High Error
Failure code [CA3421] Mass Air Flow Sensor Sup Volt Low Error
Failure code [CA3724] EGR/KVGT Motor Driver Power Low Error
Failure code [CA3741] Rail Press Valve Trip 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 Drive Short Circuit
Failure code [D19JKZ] Personal Code Relay Abnormality
Failure code [D811MC] KOMTRAX Error
Failure code [D862KA] GPS Antenna Open Circuit
Failure code [D8ALKA] System Operating Lamp Disconnection (KOMTRAX)
Failure code [D8ALKB] System Operating Lamp Short Circuit (KOMTRAX)
Failure code [D8AQKR] CAN2 Discon (KOMTRAX)
Failure code [DA20MC] Pump Controller Malfunction
Failure code [DA22KK] Pump Solenoid Power Low Error
Failure code [DA25KP] 5V Sensor 1 Power Abnormality
Failure code [DA29KQ] Model Selection Abnormality
Failure code [DA2LKA] System Operating Lamp Disconnection (Pump Con)
Failure code [DA2LKB] System Operating Lamp Short Circuit (Pump Con)
Failure code [DA2QKR] CAN2 Discon (Pump Con)
Failure code [DA2RKR] CAN1 Discon (Pump Con)
Failure code [DAF0MB] Monitor ROM Abnormality
Failure code [DAF0MC] Monitor Error
Failure code [DAF8KB] Camera Power Supply Short Circuit
Failure code [DAF9KQ] Model Selection Abnormality
Failure code [DAFGMC] GPS Module Error
Failure code [DAFLKA] Operating Lamp Open Circuit(Monitor)
Failure code [DAFLKB] System Operating Lamp Short Circuit (Monitor)
Failure code [DAFQKR] CAN2 Discon (Monitor)
Failure code [DAZ9KQ] A/C Model Selection Abnormality
Failure code [DAZQKR] CAN2 Discon (Aircon ECU)
Failure code [DB2QKR] CAN2 Discon (Engine Con)
Failure code [DB2RKR] CAN1 Discon (Engine Con)
Failure code [DGH2KB] Hyd Oil Sensor Short Circuit
Failure code [DHA4KA] Air Cleaner Clogging Sensor Open Circuit
Failure code [DHPAMA] F Pump Press Sensor Abnormality
Failure code [DHPBMA] R Pump Press Sensor Abnormality
Failure code [DHS3MA] Arm Curl PPC Press Sensor Abnormality
Failure code [DHS4MA] Bucket Curl PPC Press Sensor Abnormality
Failure code [DHS8MA] Boom Raise PPC Press Sensor Abnormality
Failure code [DHS9MA] Boom Lower PPC Press Sensor Abnormality
Failure code [DHSAMA] Swing RH PPC Press Sensor Abnormality
Failure code [DHSBMA] Swing LH PPC Press Sensor Abnormality
Failure code [DHSCMA] Arm Dump PPC Press Sensor Abnormality
Failure code [DHSDMA] Bucket Dump PPC Press Sensor Abnormality25 topics
  • Failure code [DKR0MA] Pump Swash Plate Sensor Abnormality
  • Failure code [DR21KX] Camera 2 Picture Rev. Drive Abnormality
  • Failure code [DR31KX] Camera 3 Picture Rev. Drive Abnormality
  • Failure code [DV20KB] Travel Alarm Short Circuit
  • Failure code [DW43KA] Travel Speed Sol Open Circuit
  • Failure code [DW43KB] Travel Speed Sol Short Circuit
  • Failure code [DW45KA] Swing Brake Sol Open Circuit
  • Failure code [DW45KB] Swing Brake Sol Short Circuit
  • Failure code [DW91KA] Travel Junction Sol Open Circuit
  • Failure code [DW91KB] Travel Junction Sol Short Circuit
  • Failure code [DWA2KA] Attachment Sol Open Circuit
  • Failure code [DWA2KB] Attachment Sol Short Circuit
  • Failure code [DWJ0KA] Merge-divider Sol Open Circuit
  • Failure code [DWJ0KB] Merge-divider Sol Short Circuit
  • Failure code [DWK0KA] 2-Stage Relief Sol Open Circuit
  • Failure code [DWK0KB] 2-Stage Relief Sol Short Circuit
  • Failure code [DXA8KA] PC-EPC Sol Open Circuit
  • Failure code [DXA8KB] PC-EPC Sol Short Circuit
  • Failure code [DXE4KA] Attachment Flow EPC Open Circuit
  • Failure code [DXE4KB] Attachment Flow EPC Short Circuit
  • Failure code [DY20KA] Wiper Working Abnormality
  • Failure code [DY20MA] Wiper Parking Abnormality
  • Failure code [DY2CKB] Washer Drive Short Circuit
  • Failure code [DY2DKB] Wiper Drive (Fwd) Short Circuit
  • Failure code [DY2EKB] Wiper Drive (Rev) Short Circuit
Troubleshooting of electrical system (E-mode)21 topics
  • Engine does not start (Engine does not crank)
  • Manual preheating system does not work
  • Automatic 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 red while engine is running
  • Hydraulic oil temperature monitor lights up in red while engine is running
  • Charge level monitor lights up in red while engine is running
  • Fuel level monitor lights up in red while engine is running
  • Air cleaner clogging monitor lights up in yellow while engine is running
  • Water separator 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)
    • switch is operated
    • operated
    • changed
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 locked3 topics
  • CANCEL position
    • position
    • monitor
One-touch power maximizing function cannot be canceled
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
Swing is not displayed correctly with monitoring function
Travel is not displayed correctly with monitoring function
Service is not displayed correctly with monitoring function
Attachment hydraulic circuit cannot be changed
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
All work equipment, swing and travel does not work
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
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
Time lag of work equipment is large18 topics
  • One-touch power maximizing function does not operate
  • In combined operations of swing and boom RAISE, boom rising speed is low
  • In combined operation of swing and travel, travel speed drops 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 fast
  • 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
  • Attachment hydraulic circuit cannot be changed while attachment is installed
  • 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 assembly6 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 assembly
Removal and installation of KCCV assembly
Removal and installation of air cleaner assembly
Removal and installation of travel motor and final drive assembly
Disassembly and assembly of 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 shoe assembly
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
Disassembly and assembly of carrier roller assembly
Removal and installation of revolving frame assembly
Removal and installation of counterweight assembly
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 main pump input shaft oil seal
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
Removal and installation of work equipment assembly
Disassembly and assembly of work equipment cylinder assembly
Removal and installation of operator's cab assembly
Removal and installation of operator 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 operator's seat
Removal and installation of seat belt
Removal and installation of front wiper assembly
Removal and installation of air conditioner compressor assembly
Removal and installation of air conditioner condenser 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 pump swash plate sensor
Removal and installation of mass air flow and temperature sensor1 topic
  • Removal and installation of KOMTRAX terminal assembly
Maintenance standard25 topics
  • Engine mount
  • Cooling system
  • Swing circle
  • Swing machinery
  • Final drive
  • Sprocket
  • Track frame and idler cushion
  • Idler
  • Track roller
  • Carrier roller
  • Track shoe
  • Hydraulic tank
  • Main pump
  • Control valve
  • Travel motor
  • Work equipment and swing PPC valve
  • Travel PPC valve
  • 1st-line attachment PPC valve (with EPC valve)
  • 2nd-line attachment PPC valve
  • Solenoid valve
  • Attachment circuit selector valve (for high-pressure circuit)
  • Attachment circuit selector valve (for low-pressure circuit)
  • Boom cylinder
  • Arm cylinder
  • Bucket cylinder
Appendix
Air conditioner components21 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
  • Air conditioner 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 air conditioner piping
Handling of compressor oil
Desiccant replacement
Diagrams and drawings
Hydraulic circuit diagram
Symbols in hydraulic circuit diagram
Electric circuit diagram
Symbols in electric circuit diagram
Electrical circuit diagram
Electric circuit diagram of air conditioner unit

Inside this manual

Real pages from this service manual (1,455 pages). Open the sample pages (PDF, 870 KB)

Sample pages from the Komatsu PC170LC-10 Hydraulic Excavator Service Manual: Diagram, Troubleshooting, Specifications, Foldout diagram
  • Diagram, page 655: Troubleshooting by failure code (Display of code)
  • Troubleshooting, page 831: Troubleshooting by failure code (Display of code)
  • Specifications, page 1,293: 60 Maintenance standard
  • Foldout diagram: Electrical circuit diagram (1/6)

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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, 1,455 pages

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