Komatsu PC390LL-10 Log Loader Road Builder Service Manual

Name: Komatsu PC390LL-10 Log Loader Road Builder Service Manual
Brand: MidWestTech
SKU: CEBM027502
Price: 199.55 USD
Availability: InStock

1,907 pages · Publication CEBM027502

$199.55

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Models: PC390LL-10 Log Loader
Serial coverage: A50601 and up
Manual type: Service Manual
Pages: 1,907
Publication: CEBM027502
Condition: Brand new

Komatsu PC390LL-10 Log Loader Road Builder Service Manual, publication CEBM027502

What's inside

From the manual's own table of contents: 4 sections, 433 entries. See sample pages (PDF, 1034 KB)

Search the contents

FOREWORD48 topics

12CONTENTS
FOREWORD
GENERAL
STRUCTURE AND FUNCTION
STANDARD VALUE TABLES
TESTING AND ADJUSTING
TROUBLESHOOTING
DISASSEMBLY AND ASSEMBLY
MAINTENANCE STANDARD
AIR CONDITIONING
DIAGRAMS AND SCHEMATICS
Pilot Monitor
Switches
Guidance ICON and Function Switch
Operator Mode Function
Service Mode Function
KOMTRAX SYSTEM
KOMTRAX terminal
Input and Output Signals
SENSORS
Ambient Pressure Sensor
Charge (Boost) Pressure and Temperature Sensor
Coolant Temperature Sensor
Ne (Crankshaft) Speed Sensor
Bkup (Camshaft) Speed Sensor
Common Rail Pressure Sensor
Exhaust Manifold Pressure Sensor
EGR Orifice Temperature Sensor
EGR Valve Lift Sensor
Turbo Speed Sensor
KVGT Position Sensor
Mass Air Flow and Temperature Sensor
KDPF Differential Pressure and Outlet Pressure Sensor
KDOC Inlet Temperature Sensor
KDOC Outlet Temperature Sensor
KDPF Outlet Temperature Sensor
Crankcase Pressure Sensor
Engine Oil Level Sensor
Fuel Level Sensor
Coolant Level Sensor
Hydraulic Oil Temperature Sensor
Front Pump Oil Pressure Sensor
Rear Pump Oil Pressure Sensor
PPC Oil Pressure Sensor
Air Cleaner Clogging Sensor
Front Pump Swash Plate Sensor
Rear Pump Swash Plate Sensor
Water-In-Fuel Sensor

TROUBLESHOOTING312 topics

A1U0N4 - KDPF Dry Request (HC Release) 2
AA10NX - Air Cleaner Clogging
AB00KE - Charge Voltage Low
B@BAZG - Engine Oil Pressure Low
B@BAZK - Eng Oil Level Low
B@BCNS - Engine Coolant Overheat
B@BCZK - Radiator Coolant Level Low
B@HANS - Hyd Oil Overheat
CA115 - Eng Ne and Bkup Speed Sens Error
CA122 - Chg Air Press Sensor High Error
CA123 - Chg Air Press Sensor Low Error
CA131 - Throttle Sensor High Error
CA132 - Throttle Sensor Low Error
CA144 - Coolant Temp Sens High Error
CA145 - Coolant Temp Sens Low Error
CA153 - Chg Air Temp Sensor High Error
CA154 - Chg Air Temp Sensor Low Error
CA187 - Sensor 2 Supply Volt Low Error
CA221 - Ambient Press Sensor High Error
CA222 - Ambient Press Sensor Low Error
CA227 - Sensor 2 Supply Volt High Error
CA234 - Eng Overspeed
CA238 - Ne Speed Sensor Supply Volt Error
CA239 - Ne Speed Sens Supply Volt High Error
CA271 - IMV/PCV1 Short Error
CA272 - IMV/PCV1 Open Error
CA281 - Pump Press Balance Error
CA295 - Ambient Press Sens In Range Error
CA343 - ECM Critical Internal Failure
CA351 - Injectors Drive Circuit Error
CA352 - Sensor 1 Supply Volt Low Error
CA356 - Mass Air Flow Sensor High Error
CA357 - Mass Air Flow Sensor Low Error
CA386 - Sensor 1 Supply Volt High Error
CA428 - Water in Fuel Sensor High Error
CA429 - Water in Fuel Sensor Low Error
CA435 - Eng Oil Press Sw Error
CA441 - Battery Voltage Low Error
CA442 - Battery Voltage High Error
CA449 - Rail Press Very High Error
CA451 - Rail Press Sensor High Error
CA452 - Rail Press Sensor Low Error
CA488 - Chg Air Temp High Torque Derate
CA515 - Rail Press Sens Sup Volt High Error
CA516 - Rail Press Sens Sup Volt Low Error
CA553 - Rail Press High Error 1
CA555 - Crankcase Press High Error 1
CA556 - Crankcase Press High Error 2
CA559 - Rail Press Low Error 1
CA595 - Turbo Speed High Error 2
CA687 - Turbo Speed Low Error
CA689 - Eng Ne Speed Sensor Error
CA691 - Intake Air Temp Sens High Error
CA692 - Intake Air Temp Sens Low Error
CA697 - ECM Int Temp Sensor High Error
CA698 - ECM Int Temp Sensor Low Error
CA731 - Eng Bkup Speed Sens Phase Error
CA778 - Eng Bkup Speed Sensor Error
CA1117 - Persistent Data Lost Error
CA1664 - KDOC Malfunction
CA1691 - Regeneration Ineffective
CA1695 - Sensor 5 Supply Volt High Error
CA1696 - Sensor 5 Supply Volt Low Error
CA1843 - Crankcase Press Sens High Error
CA1844 - Crankcase Press Sens Low Error
CA1879 - KDPF Differential P Sensor High Error
CA1881 - KDPF Differential P Sensor Low Error
CA1883 - KDPF Differential P Sens In Range Error
CA1921 - KDPF Soot Load High Error 1
CA1922 - KDPF Soot Load High Error 2
CA1942 - Crankcase Press Sens In Range Error
CA1993 - KDPF Differential Pressure Low Error
CA2185 - Throt Sensor Sup Volt High Error
CA2186 - Throt Sensor Sup Volt Low Error
CA2249 - Rail Press Very Low Error
CA2265 - Fuel Feed Pump Open Error
CA2266 - Fuel Feed Pump Short Error
CA2271 - EGR Valve Pos Sens High Error
CA2272 - EGR Valve Pos Sens Low Error
CA2288 - Turbo Speed High Error 1
CA2311 - IMV Solenoid Error
CA2349 - EGR Valve Solenoid Open Error
CA2353 - EGR Valve Solenoid Short Error
CA2357 - EGR Valve Servo Error
CA2373 - Exhaust Manifold Press Sens High error
CA2374 - Exhaust Manifold Press Sens Low Error
CA2375 - EGR Orifice Temp Sens High Error
CA2376 - EGR Orifice Temp Sens Low Error
CA2381 - KVGT Pos Sens High Error
CA2382 - KVGT Pos Sens Low Error
CA2383 - KVGT Solenoid Open Error
CA2386 - KVGT Solenoid Short Error
CA2387 - KVGT Valve Servo Error
CA2554 - Exh Manifold Press Sens In Range Error
CA2555 - Grid Htr Relay Open Circuit Error
CA2556 - Grid Htr Relay Volt High Error
CA2637 - KDOC Blocked
CA2639 - Manual Stationary Regeneration Request
CA2961 - EGR Orifice Temp High Error 1
CA2973 - Chg Air Press Sensor In Range Error
CA3133 - KDPF Outlet Press Sens High Error
CA3134 - KDPF Outlet Press Sens Low Error
CA3135 - KDPF Outlet Press Sens In Range Error
CA3251 - KDOC Inlet Temp High Error
CA3253 - KDOC Temp Error - Non Regeneration
CA3254 - KDOC Outlet Temp High Error 1
CA3255 - KDPF Temp Error - Non Regeneration
CA3256 - KDPF Outlet Temp High Error 1
CA3311 - KDOC Outlet Temp High Error 2
CA3312 - KDPF Outlet Temp High Error 2
CA3313 - KDOC Inlet Temp Sensor Low Error
CA3314 - KDOC Inlet Temp Sens High Error
CA3315 - KDOC Inlet Temp Sens In Range Error
CA3316 - KDOC Outlet Temp Sens Low Error
CA3317 - KDOC Outlet Temp Sens High Error
CA3318 - KDOC Outlet Temp Sens In Range Error
CA3319 - KDPF Outlet Temp Sens High Error
CA3321 - KDPF Outlet Temp Sens Low Error
CA3322 - KDPF Outlet Temp Sens In Range Error
CA3419 - Mass Air Flow (MAF) Sensor Sup Volt High Error
CA3421 - Mass Air Flow (MAF) Sensor Sup Volt Low Error
CA3741 - Rail Press Valve Trip Error
D110KB - Battery Relay Output Voltage
D19JKZ - Personal Code Relay Abnormality
D811MC - KOMTRAX Error
D862KA - GPS Antenna Open Circuit
D8AQKR - CAN2 Discon (KOMTRAX)
DA20MC - Pump Controller
DA22KK - Pump Solenoid Power Low Error
DA25KP - 5 V Sensor 1 Power Abnormality
DA29KQ - Model Selection Abnormality
DA2QKR - CAN2 Discon ( Pump Con)
DA2RKR - CAN1 Discon ( Pump Con)
DAF0MB - Monitor Memory Error
DAF0MC - Monitor Error
DAF8KB - Camera Power Supply Short Circuit
DAF9KQ - Model Selection Abnormality
DAFGMC - GPS Module Error
DAFQKR - CAN2 Discon
DAZ9KQ - A/C Model Selection Abnormality
DAZQKR - CAN2 Discon (AC)
DB2QKR - CAN2 Discon (Engine Con)
DB2RKR - CAN1 Discon (Engine Con)
DGH2KB - Hyd Oil Sensor Short Circuit
DHA4KA - Air Cleaner Clog Sensor Open Circuit
DHPAMA - F Pump Press Sensor Abnormality
DHPBMA - R Pump Press Sensor Abnormality
DHS3MA - Arm In PPC Press Sensor Abnormality
DHS4MA - Bucket Curl PPC Press Sensor Abnormality
DHS8MA - Boom Raise PPC Press Sensor Abnormality
DHS9MA - Boom Lower PPC Press Sensor Abnormality
DHSAMA - Swing RH PPC Press Sensor Abnormality
DHSBMA - Swing LH PPC Press Sensor Abnormality
DHSCMA - Arm Out PPC Press Sensor Abnormality
DHSDMA - Bucket Dump PPC Press Sensor Abnormality
DHSFMA - Travel Fwd LH PPC Press Sensor Abnormality
DHSGMA - Travel Fwd RH PPC Press Sensor Abnormality
DHSHMA - Travel Rev LH PPC Press Sensor Abnormality
DHSJMA - Travel Rev RH PPC Press Sensor Abnormality
DKR0MA - F Pump Swash Plate Sensor Abnormality
DKR1MA - R Pump Swash Plate Sensor Abnormality
DV20KB - Travel Alarm Short Circuit
DW43KA - Travel Speed Sol Open Circuit
DW43KB - Travel Speed Sol Short Circuit
DW45KA - Swing Brake Sol Open Circuit
DW45KB - Swing Brake Sol Short Circuit
DW91KA - Travel Junction Sol Open Circuit
DW91KB - Travel Junction Sol Short Circuit
DWA2KA - Attachment Sol Open Circuit
DWA2KB - Attachment Sol Short Circuit
DWK0KA - 2-Stage Relief Sol Open Circuit
DWK0KB - 2-Stage Relief Sol Short Circuit
DWK2KA - Variable Back Press Sol Open Circuit
DWK2KB - Variable Back Press Sol Short Circuit
DWK8KA - Swing Press C/O Sol Open Circuit
DWK8KB - Swing Press C/O Sol Short Circuit
DXA8KA - PC-EPC (F) Sol Open Circuit
DXA8KB - PC-EPC (F) Sol Short Circuit
DXA9KA - PC-EPC (R) Sol Open Circuit
DXA9KB - PC-EPC (R) Sol Short Circuit
DXE0KA - LS-EPC Sol Open Circuit
DXE0KB - LS-EPC Sol Short Circuit
DXE4KA - Attachment Flow EPC Open Circuit
DXE4KB - Attachment Flow EPC Short Circuit
DXE5KA - Merge-divide Main Sol Open Circuit
DXE5KB - Merge-divide Main Sol Short Circuit
DXE6KA - Merge-divide LS Sol Open Circuit
DXE6KB - Merge-divide LS Sol Short Circuit
DY20KA - Wiper Working Abnormality
DY20MA - Wiper Parking Abnormality
DY2CKB - Washer Drive Short Circuit
DY2DKB - Wiper Drive (Fwd) Short Circuit
DY2EKB - Wiper Drive (Rev) Short Circuit
ELECTRICAL SYSTEM (E-MODE)
E-1 Engine Does Not Start (Engine Does Not Rotate)
E-2 Manual Pre-Heating System Does Not Work
E-3 Automatic Pre-Heating System Does Not Work
E-4 Pre-Heating Monitor Does Not Light Up When Pre-Heater is Operated
Displays Nothing
Engine Oil Level Monitor Lights Up in Yellow
Radiator Coolant Level Monitor Lights Up in Yellow
E-8 Coolant Temperature Monitor Lights Up in White While Engine is Running
Running
E-10 Charge Level Monitor Lights Up While Engine is Running
E-11 Fuel Level Monitor Lights Up in Red While Engine is Running
E-12 Air Cleaner Clogging Monitor Lights Up in Yellow While Engine is Running
E-15 Engine Oil Pressure Monitor Lights Up in Red While Engine is Running
E-16 Fuel Gauge Display Does Not Move from Minimum or Maximum
E-17 Display of Fuel Gauge Differs from Actual Fuel Level
E-18 Coolant Temperature Gauge Indicate Either Min or Max and Does Not Move
and Does Not Move
E-21 Hydraulic Oil Temperature Gauge Differs from Actual oil Temperature
E-22 Machine Monitor Does Not Display Partially
E-23 Function Switch Does Not Work
E-24 Automatic Pre-Heating System Does Not Work (In Cold Weather)
When Auto-Deceleration Switch is Operated
E-26 Auto-Deceleration is Not Actuated or Canceled When Lever is Operated
Working Mode Switch is Operated
is Changed
Operated
E-32 Travel Speed Does Not Change When Travel Speed is Shifted
E-31 Alarm Buzzer Does Not Stop Sounding
E-32 When Starting Switch is Turned OFF, Service Meter is Not Displayed
E-33 Machine Monitor Service Mode Cannot be Selected
E-34 Any of Work Equipment, Swing and Travel Does Not Work
E-35 Any of Work Equipment, Swing and Travel Can Not be Locked
E-36 Machine Can Not Swing While Swing Brake Cancel Switch is Canceled
NORMAL position
is Not Displayed
E-39 One-Touch Power Maximizing Function Cannot be Released
E-40 Travel Alarm Does Not Sound When Machine Travels
E-41 Travel Alarm Does Not Stop Sounding When Machine Stops
E-42 Horn Does Not Sound
E-43 Horn Does Not Stop Sounding
E-44 Wiper Monitor Does Not Light Up or Go Out When Wiper Switch is Operated
E-45 Wiper Does Not Operate When Wiper Switch is Operated
E-46 Window Washer Does Not Operate When Window Washer Switch is Operated
E-47 Boom LOWER Indication is Not Displayed Properly With Monitoring Function
E-48 Arm DUMP Indication is Not Displayed Properly With Monitoring Function
E-49 Arm IN Indication is Not Displayed Properly With Monitoring Function
E-50 Boom RAISE Indication is Not Displayed Properly With Monitoring Function
E-51 Bucket CURL Indication is Not Displayed Properly With Monitoring Function
E-52 Bucket DUMP Indication is Not Displayed Properly With Monitoring Function
E-53 Swing Indication is Not Displayed Properly With Monitoring Function
E-54 Travel Indication is Not Displayed Properly With Monitoring Function
E-55 Attachment is Not Displayed Properly With Monitoring Function
E-56 Attachment Hydraulic Circuit Cannot be Changed
E-57 KOMTRAX System Does Not Work Properly
E-58 Machine Push-up Function is Not Canceled
HYDRAULIC AND MECHANICAL SYSTEM (H-MODE)
Information Mentioned in Troubleshooting Table (H Mode)
Failure Mode and Cause Table
H-1 All of Work Equipment, Swing and Travel Operation Lacks Speed or Power
H-2 Engine Speed Lowers Significantly or Engine Stalls
H-3 Any of Work Equipment, Swing and Travel Does Not Work
H-4 Unusual Sound is Heard from Around Hydraulic Pump
H-5 Fine Control Performance or Response is Poor
H-6 Boom Operation Lacks Speed or Power
H-7 Arm Operation Lacks Speed or Power
H-8 Bucket Operation Lacks Speed or Power
H-9 Work Equipment Does Not Move in Single Operation
H-10 Hydraulic Drift of Boom is Large
H-11 Hydraulic Drift of Arm is Large
H-12 Hydraulic Drift of Bucket is Large
H-13 Time Lag of Work Equipment is Large
Equipment Move
H-15 One-Touch Power Maximizing Function Does Not Work
H-16 Machine Push Up Function Does Not Work
Load Moves Slower
H-19 In Combined Operations of Swing and Travel, Travel Speed Drops Largely
H-20 Machine Does Not Travel Straight
H-21 Travel Speed is Too Low
H-22 Machine is hard to Steer or Travel Power is Low
H-23 Travel Speed Does Not Change, or Travel Speed is Too Low or High
H-24 One of Tracks Dose Not Run
H-25 Upper Structure Does Not Swing to the Right or Left
H-26 Upper Structure Swing Only to the Right or Left
H-27 Swing Acceleration is Poor or Swing Speed is Low (Either Right and Left)
H-28 Swing Acceleration is Poor or Swing Speed is Low in Only One Direction
(Both Right and Left)
(Either Right or Left)
H-31 Shock is Large When Upper Structure Stops Swinging
H-32 Large Unusual Noise is Heard When Upper Structure Stops Swinging
H-33 When Swing Holding Brake is Applied, Hydraulic Drift of Swing is Large
H-34 When Swing Holding Brake is Released, Hydraulic Drift Of Swing is Large
H-35 When additional attachment is installed, attachment circuit is not switched
H-36 Oil Flow in Attachment Circuit Cannot be Controlled
ENGINE (S-MODE)
Information Mentioned in Troubleshooting Table (S-Mode)
S-1 When Starting Switch is Turned to START Position, Engine Does Not Crank
S-2 When Engine Cranks, Exhaust Smoke Does Not Come Out
(Incomplete Combustion: Engine Cranks but Does Not Start)
S-4 Startability is Poor
S-5 Engine Does Not Pick Up Smoothly
S-6 Engine Stops During Operation
S-7 Engine Runs Rough or is Unstable
S-8 Engine Lacks Power
S-9 Exhaust Smoke is Black (KDPF Clogs Up Early)
S-10 Engine Oil Consumption is Excessive
S-11 Oil Becomes Contaminated Early
S-12 Fuel Consumption is Excessive
S-13 Oil is in Coolant (or Coolant Spurts or Coolant Level Goes Down)
S-14 Oil Pressure Drops
S-15 Fuel is Contaminated in Engine Oil
S-16 Coolant Mixes in Engine Oil (Oil Becomes Cloudy White)
S-17 Coolant Temperature Rises Too High (Overheating)
S-18 Unusual Noise is Heard
S-19 Vibration is Excessive
S-20 Air Cannot be Bled from Fuel Circuit
S-21 Automatic Regeneration is Operated Frequently
S-22 Active Regeneration is Operated for Long
S-23 White Smoke Comes Out in the Process of Active Regeneration

DISASSEMBLY AND ASSEMBLY56 topics

Removal
Installation
Fuel Tank Assembly
Engine Hood Assembly
KDPF Assembly
Disassembly
Assembly
KCCV Assembly
Air Cleaner Assembly
Air Conditioner Compressor Assembly
Air Conditioner Condenser Assembly
DRIVE ASSEMBLY
Swing Motor and Swing Machinery Assembly
Swing Machinery
Swing Circle Assembly
UNDERCARRIAGE AND FRAME
Track Shoe Assembly
Separation
Sprocket
Idler and Idler Cushion Assembly
Idler
Idler Cushion
Track Roller/Carrier Roller
Revolving Frame Assembly
Counterweight Assembly
HYDRAULIC SYSTEM
Center Swivel Joint Assembly
Hydraulic Tank Assembly
Main Pump Assembly
Control Valve Assembly
Replacing Procedures of Pressure Compensation Valve Seal
Work Equipment PPC Valve
Travel PPC Valve
WORK EQUIPMENT
Bucket Assembly
Arm Assembly
Work Equipment Assembly (Road Builder)
Work Equipment Assembly (Log Loader)
Work Equipment Cylinder (Road Builder)
CAB AND ITS ATTACHMENTS
Operator's Cab Assembly
Operator Cab Glass (Fixed Glass)
Removal of Side Windows (4)
Front Window Assembly
Floor Frame Assembly
Air Conditioner Unit Assembly
Operator's Seat
Seat Belt
Front Upper Wiper Assembly
Front Lower Wiper Assembly
ELECTRIC SYSTEM
Engine Controller Assembly
Pump Controller Assembly
Machine Monitor Assembly
Pump Swash Plate Sensor
KOMTRAX Terminal Assembly

AIR CONDITIONER13 topics

A-3 Troubleshooting of Blower Motor System (Air Does Not Come Out or Air Flow is Normal)
A-4 Troubleshooting for FRESH/RECIRC Air Changeover
Troubleshooting with Gauge Pressure
[Measurement Condition for Pressure]
Testing Refrigerant Pressure
Check
Precautions for Disconnecting and Connecting Refrigerant Piping
Disconnection
Connection
Tightening Torque for Joint Portion of Refrigerant Piping
Handling of Compressor Oil
Oil Level Control of Compressor
Refilling of Compressor Oil

Inside this manual

Real pages from this service manual (1,907 pages). Open the sample pages (PDF, 1033 KB)

Sample pages from the Komatsu PC390LL-10 Log Loader Road Builder Service Manual: Troubleshooting, Diagram, Specifications, Color page, Foldout diagram

Troubleshooting, page 717: Procedure, measuring location, criteria and remarks
Diagram, page 1,703: DISASSEMBLY AND ASSEMBLY
Specifications, page 1,790: MAINTENANCE STANDARDS
Color page, page 487: TESTING AND ADJUSTING
Foldout diagram, page 1,897: Electrical Circuit Diagram (1/6)

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, 1,907 pages

Quantity one is the manual described above.

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Other editions and similar models

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