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Komatsu PC290LC-8, PC290NLC-8 Hydraulic Excavator Service Manual

1,051 pages · Publication UEN00001-01

$109.51
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Models
PC290LC-8, PC290NLC-8
Serial coverage
K50001 and up
Manual type
Service Manual
Pages
1,051
Publication
UEN00001-01
Condition
Brand new
Komatsu PC290LC-8, PC290NLC-8 Hydraulic Excavator Service Manual, publication UEN00001-01

What's inside

From the manual's own table of contents: 187 sections, 362 entries. See sample pages (PDF, 874 KB)

Organization list of the shop manual
Foreword and general information
Safety notice
How to read the shop manual
Explanation of terms for maintenance standard
Handling electric equipment and hydraulic component
How to read electric wire code
Method of disassembling and connecting push-pull type coupler
Standard tightening torque table
Conversion table
Specification and technical data
Specification dimension drawings
Working range diagram
Specifications
Weight table
Table of fuel, coolant and lubricants
Engine and cooling system
Engine related parts
Radiator, oil cooler, aftercooler and fuel cooler
Power train
Final drive
Swing machinery
Swing circle
Undercarriage and frame
Show all 187 sections
Track frame and recoil spring
Idler
Carrier roller
Track roller
Track shoe
Hydraulic system, Part 1
Hydraulic equipment layout drawing
Hydraulic tank and filter
Hydraulic pump
Pilot oil filter
Hydraulic system, Part 2
Control valve
CLSS
Functions and operation by valve45 topics
  • Hydraulic system, Part 3
  • Swing motor
  • Center swivel joint
  • Travel motor
  • PPC valve
  • Valve control
  • ATT EPC Valve Assembly
  • Solenoid valve
  • PPC Accumulator
  • Return oil filter
  • Attachment circuit selector valve
  • Quick coupler control valve
  • Hydraulic cylinder
  • Work equipment
  • Dimensions of components
  • Cab and its attachments
  • Air conditioner piping
  • Electrical system
  • Engine control
  • Electrical control system
  • Monitor system
  • Sensor
  • PPC Levers
  • KOMTRAX terminal system
  • Standard service value table
  • Standard value table for engine related parts
  • Standard value table for chassis related parts
  • Testing and adjusting, Part 1
  • Tools for testing, adjusting, and troubleshooting
  • Measuring engine speed
  • Measuring intake air pressure (boost pressure)
  • Checking exhaust gas color
  • Adjusting valve clearance
  • Measuring compression pressure
  • Measuring blow-by pressure
  • Measuring engine oil pressure
  • Handling fuel system parts
  • Releasing residual pressure from fuel system
  • Measuring fuel pressure
  • Measuring fuel return rate and leakage
  • Bleeding air from fuel circuit
  • Checking fuel circuit for leakage
  • Checking and adjusting air conditioner compressor belt tension
  • Measuring swing circle bearing clearance
  • Checking and adjusting track shoe tension
Measuring and adjusting oil pressure in work equipment, swing, and travel circuits
Measuring control circuit basic pressure
Measuring and adjusting oil pressure in pump PC control circuit
Measuring and adjusting oil pressure in pump LS control circuit
Measuring solenoid valve output pressure
Measuring PPC valve output pressure
Adjusting play of work equipment and swing PPC valves
Checking parts which cause hydraulic drift of work equipment
Releasing residual pressure from hydraulic circuit
Measuring oil leakage
Bleeding air from each part
Checking cab tipping stopper
Adjusting mirrors
Testing and adjusting, Part 2
Special functions of machine monitor
Testing and adjusting, Part 3
Handling high-voltage circuit of engine controller
Preparation work for troubleshooting of electrical system
Procedure for testing diodes
Pm Clinic service
General information on troubleshooting
Points to remember when troubleshooting
Sequence of events in troubleshooting
Check before troubleshooting
Classification and procedures for troubleshooting
Connection table for connector pin numbers
T-boxes and T-adapters table
Troubleshooting by failure code (Display of code), Part 1
Failure codes table
Before carrying out troubleshooting when failure code is displayed
Information in troubleshooting table
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] Hydr Oil Overheat
Failure code [CA111] EMC Critical Internal Failure
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 Error
Failure code [CA153] Chg Air Temp Sensor High Error55 topics
  • Failure code [CA154] Chg Air Temp Sensor Low Error
  • Failure code [CA155] Chg Air Temp High Speed Derate
  • Failure code [CA187] Sens Supply 2 Volt Low Error
  • Failure code [CA221] Ambient Press Sens High Error
  • Failure code [CA222] Ambient Press Sens Low Error
  • Failure code [CA227] Sens Supply 2 Volt High Error
  • Failure code [CA234] Eng Overspeed
  • Failure code [CA238] Ne Speed Sens Supply Volt Error
  • Failure code [CA271] IMV/PCV1 Short Error
  • Failure code [CA272] IMV/PCV1 Open Error
  • Failure code [CA322] Inj #1 (L#1) Open/Short Error
  • Failure code [CA323] Inj #5 (L#5) Open/Short Error
  • Failure code [CA324] Inj #3 (L#3) Open/Short Error
  • Failure code [CA325] Inj #6 (L#6) Open/Short Error
  • Failure code [CA331] Inj #2 (L#2) Open/Short Error
  • Failure code [CA332] Inj #4 (L#4) Open/Short Error
  • Troubleshooting by failure code (Display of code), Part 2
  • Failure code [CA342] Calibration Code Incompatibility
  • Failure code [CA351] Injectors Drive Circuit Error
  • Failure code [CA352] Sens Supply 1 Volt Low Error
  • Failure code [CA386] Sens Supply 1 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 [CA488] Chg Air Temp High Torque Derate
  • Failure code [CA553] Rail Press High Error
  • Failure code [CA559] Rail Press Low Error
  • Failure code [CA689] Eng Ne Speed Sensor Error
  • Failure code [CA731] Eng Bkup Speed Sens Phase Error
  • Failure code [CA757] All Continuous Data Lost Error
  • Failure code [CA778] Eng Bkup Speed Sensor Error
  • Failure code [CA1633] KOMNET Datalink Timeout Error
  • Failure code [CA2185] Throt Sens Sup Volt High Error
  • Failure code [CA2186] Throt Sens Sup Volt Low Error
  • Failure code [CA2249] Rail Press Very Low Error
  • Failure code [CA2311] IMV Solenoid Error
  • Failure code [CA2555] Grid Htr Relay Volt High Error
  • Failure code [CA2556] Grid Htr Relay Volt Low Error
  • Failure code [D19JKZ] Personal Code Relay Abnormality
  • Failure code [D862KA] GPS Antenna Discon
  • Failure code [DA25KP] 5V Sensor 1 Power Abnormality
  • Failure code [DA29KQ] Model Selection Abnormality
  • Troubleshooting by failure code (Display of code), Part 3
  • Failure code [DA2RMC] CAN Discon (Pump Con Detected)
  • Failure code [DAFGMC] GPS Module Error
  • Failure code [DAFRMC] CAN Discon (Monitor Detected)
  • Failure code [DGH2KB] Hydr Oil Sensor Short
  • 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 [DHSAMA] Swing RH PPC Press Sensor Abnormality
Failure code [DHSBMA] Swing LH PPC Press Sensor Abnormality
Failure code [DHSDMA] Bucket Dump PPC Press Sensor Abnormality
Failure code [DHX1MA] Overload Sensor Abnormality (Analog)
Failure code [DW43KA] Travel Speed Sol Discon
Failure code [DW43KB] Travel Speed Sol Short
Failure code [DW45KA] Swing Brake Sol Discon
Failure code [DW45KB] Swing Brake Sol Short
Failure code [DW91KA] Travel Junction Sol Discon
Failure code [DW91KB] Travel Junction Sol Short
Failure code [DWA2KA] Service Sol Discon
Failure code [DWA2KB] Service Sol Short
Failure code [DWK0KA] 2-stage Relief Sol Discon
Failure code [DWK0KB] 2-stage Relief Sol Short
Troubleshooting by failure code (Display of code), Part 4
Failure code [DXA8KA] PC-EPC (F) Sol Discon
Failure code [DXA8KB] PC-EPC (F) Sol Short
Failure code [DXA9KA] PC-EPC (R) Sol Discon
Failure code [DXA9KB] PC-EPC (R) Sol Short
Failure code [DXE0KA] LS-EPC Sol Discon
Failure code [DXE0KB] LS-EPC Sol Short
Failure code [DXE4KA] Service Current EPC Discon
Failure code [DXE4KB] Service Current EPC Short
Failure code [DXE5KA] Merge-divider Main Sol Discon
Failure code [DXE5KB] Merge-divider Main Sol Short
Failure code [DXE6KA] Merge-divider LS Sol Discon
Failure code [DXE6KB] Merge-divider LS Sol Short
Failure code [DY20KA] Wiper Working Abnormality
Failure code [DY20MA] Wiper Parking Abnormality
Failure code [DY2CKA] Washer Drive Discon
Failure code [DY2CKB] Washer Drive Short
Failure code [DY2DKB] Wiper Drive (For) Short
Failure code [DY2EKB] Wiper Drive (Rev) Short
Troubleshooting of electrical system (E-mode)
Before carrying out troubleshooting of electrical system
When starting switch turned ON, machine monitor displays nothing
When starting switch turned ON (before starting engine), basic check item lights up
Engine does not start (Engine does not turn)
Preheater does not operate
Automatic warm-up system does not operate (in cold season)
All work equipment, swing, and travel mechanism do not move or cannot be locked
Precaution lights up while engine is running
Emergency stop item lights up while engine is running
Engine coolant temperature gauge does not indicate normally
Hydraulic oil temperature gauge does not indicate normally
Fuel level gauge does not indicate normally
Contents of display by machine monitor are different from applicable machine
Machine monitor does not display some items
Function switch does not work
Auto-decelerator does not operate normally
Working mode does not change
Travel speed does not change54 topics
  • Alarm buzzer cannot be stopped
  • Windshield wiper and window washer do not operate
  • Power maximizing function does not operate normally
  • Swing holding brake does not operate normally
  • Travel alarm does not sound or does not stop sounding
  • When starting switch is turned OFF, service meter is not displayed
  • Machine monitor cannot be set in service mode
  • Monitoring function does not display lever control signal normally
  • KOMTRAX system does not operate normally
  • Troubleshooting of hydraulic and mechanical system (H-mode)
  • System diagram of hydraulic and mechanical system
  • Information in troubleshooting table
  • Speed or power of whole work equipment, swing, and travel is low
  • Engine speed lowers extremely or engine stalls
  • Work equipment, swing, and travel systems do not work
  • Abnormal sound comes out from around hydraulic pump
  • Auto-decelerator does not operate
  • Fine control performance or response is low
  • Speed or power of boom is low
  • Speed or power of arm is low
  • Speed or power of bucket is low
  • Work equipment does not move singly
  • Hydraulic drift of work equipment is large
  • Time lag of work equipment is large
  • When part of work equipment is relieved singly, other parts of work equipment move
  • Power maximizing function does not work
  • In compound operation of work equipment, speed of part loaded more is low
  • When machine swings and raises boom simultaneously, boom rising speed is low
  • When machine swings and travels simultaneously, travel speed lowers largely
  • Machine deviates during travel
  • Travel speed is low
  • Machine is not steered well or steering power is low
  • Travel speed does not change or travel speed is low/high
  • Travel system does not move (only one side)
  • Upper structure does not swing
  • Swing acceleration or swing speed is low
  • Upper structure overruns remarkably when it stops swinging
  • Large shock is made when upper structure stops swinging
  • Large sound is made when upper structure stops swinging
  • Hydraulic drift of swing is large
  • Attachment circuit is not changed
  • Oil flow in attachment circuit cannot be controlled
  • Troubleshooting of engine (S-mode)
  • Method of using troubleshooting chart
  • Starting performance is poor
  • Engine does not start
  • Engine does not pick up smoothly
  • Engine stops during operations
  • Engine does not rotate smoothly
  • Engine lack output (or lacks power)
  • Exhaust smoke is black (incomplete combustion)
  • Oil consumption is excessive (or exhaust smoke is blue)
  • Oil becomes contaminated quickly
  • Fuel consumption is excessive
Oil is in coolant (or coolant spurts back or coolant level goes down)
Oil pressure drops
Oil level rises (Entry of coolant/fuel)
Coolant temperature becomes too high (overheating)
Abnormal noise is made
Vibration is excessive
General information on disassembly and assembly
How to read this manual
Coating materials list
Special tool list
Sketches of special tools
Removal and installation of fuel supply pump assembly
Removal and installation of fuel injector assembly
Removal and installation of engine front seal
Removal and installation of engine rear seal
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 fuel cooler assembly
Removal and installation of engine and hydraulic pump assembly
Removal and installation of 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 motor and swing machinery assembly
Removal and installation of swing circle assembly
Disassembly and assembly of carrier roller assembly
Disassembly and assembly of track roller assembly
Disassembly and assembly of idler assembly
Disassembly and assembly of recoil spring assembly
Removal and installation of sprocket
Expansion and installation of track shoe assembly
Removal and installation of revolving frame assembly
Removal and installation of counterweight assembly
Hydraulic system
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 control valve assembly
Disassembly and assembly of control valve assembly
Removal and installation of hydraulic pump assembly
Removal and installation of oil seal in hydraulic pump input shaft
Disassembly and assembly of work equipment PPC valve assembly
Disassembly and assembly of travel PPC valve assembly
Disassembly and assembly of hydraulic cylinder assembly21 topics
  • Removal and installation of work equipment assembly
  • Removal and installation of operator's cab assembly
  • Removal and installation of operator cab glass (stuck 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 KOMTRAX communication modem assembly
  • Removal and installation of monitor assembly
  • Removal and installation of pump controller assembly
  • Removal and installation of engine controller assembly
  • Hydraulic diagrams and drawings (For PC290-8 K50001 ~ K50104)
  • Hydraulic circuit diagram 1/2
  • Hydraulic circuit diagram 2/2
  • Hydraulic diagrams and drawings (For PC290-8 K50105 and up))
  • Electrical circuit diagram (For PC290-8 K50001 ~ K50104)
  • Electrical circuit diagram (1/5)
  • Electrical circuit diagram (2/5)
  • Electrical circuit diagram (3/5)
  • Electrical circuit diagram (4/5)
  • Electrical circuit diagram (5/5)
  • Electrical diagrams and drawings (For PC290 K50105 and up)

Inside this manual

Real pages from this service manual (1,051 pages). Open the sample pages (PDF, 873 KB)

Sample pages from the Komatsu PC290LC-8, PC290NLC-8 Hydraulic Excavator Service Manual: Specifications, Troubleshooting, Diagram, Foldout diagram
  • Specifications, page 381: 30 Testing and adjusting
  • Troubleshooting, page 525: Failure code [B@HANS] Hydr Oil Overheat
  • Diagram, page 621: Possible causes
  • Foldout diagram, page 1,040: Electrical diagrams and drawings (For PC290 K50105 and up

This is a service manual

Here's how it compares to the other manual types.

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, 1,051 pages

Quantity one is the manual described above.

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