MidWestTechService, Parts and Operator's Manuals, in stock and ready to ship!
Fast free USA shippingShips in 1 business daySave 10% on 2 manuals, 15% on 3+

Komatsu PC228USLC-10 Mini Excavator Service Manual

1,755 pages · Publication SEN06483-04

$179.61
Fast free USA shippingShips in 1 business daySave 10% on 2 manuals, 15% on 3 or morePay by credit or debit card or with PayPal. No PayPal account needed.
Models
PC228USLC-10
Serial coverage
1002 and up
Manual type
Service Manual
Pages
1,755
Publication
SEN06483-04
Condition
Brand new
Komatsu PC228USLC-10 Mini Excavator Service Manual, publication SEN06483-04

What's inside

From the manual's own table of contents: 305 sections, 607 entries. See sample pages (PDF, 824 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 305 sections
Engine related parts
KVGT
EGR system piping drawing
EGR system circuit diagram
EGR valve
EGR cooler
KCCV layout drawing
KCCV ventilator
KDPF
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 EGR valve and KVGToil pressures
  • Measuring fuel pressure
  • Measuring fuel delivery, 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 and adjusting oil pressure in work equipment, swing, and travel circuits
  • 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
  • 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 and adjusting boom angle potentiometer
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
Testing before troubleshooting
Inspection procedure before troubleshooting
Preparation work for troubleshooting of electrical system
Classification and procedure for troubleshooting
Symptom of probable failure and troubleshooting No
Information in troubleshooting table
Diagnostic procedure for wiring harness open curcuit of pressure sensor system
Connector list and layout
Connector contact identification
T-branch box and T-branch adapter table
Fuse location table
Precautions for KDPF (KCSF and KDOC) Cleaning and Replacement1 topic
  • sensors)
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 [A1U0N3] HC Desorb Request 1
Failure code [A1U0N4] HC Desorb Request 2
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 Overheat59 topics
  • 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 Error
  • 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 Sensor 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 [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
  • 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 [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 [CA595] Turbo Speed High Error 2
  • Failure code [CA687] Turbo Speed 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 Int 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 [CA1664] KDOC Malfunction
Failure code [CA1691] Regeneration Ineffective
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 [CA1879] KDPF Delta P Sensor High Error
Failure code [CA1881] KDPF Delta P Sensor Low Error
Failure code [CA1883] KDPF Delta P Sens In Range Error
Failure code [CA1921] KDPF Soot Load High Error 1
Failure code [CA1922] KDPF Soot Load High Error 2
Failure code [CA1942] Crankcase Press Sens In Range Error
Failure code [CA1993] KDPF Delta Pressure Low 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 [CA2271] EGR Valve Pos Sens High Error
Failure code [CA2272] EGR Valve Pos Sens Low Error
Failure code [CA2288] Turbo Speed High Error 1
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 [CA2381] KVGT Pos Sens High Error
Failure code [CA2382] KVGT Pos Sens Low Error
Failure code [CA2383] KVGT Solenoid Open Error
Failure code [CA2386] KVGT Solenoid Short Error
Failure code [CA2387] KVGT Servo 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 [CA2637] KDOC Face Plugging
Failure code [CA2639] Manual Stationary Regeneration Request
Failure code [CA2961] EGR Orifice Temp High Error 1
Failure code [CA2973] Chg Air Press Sensor In Range Error
Failure code [CA3133] KDPF Outlet Press Sens High Error
Failure code [CA3134] KDPF Outlet Press Sens Low Error
Failure code [CA3135] KDPF Outlet Press Sens In Range Error
Failure code [CA3251] KDOC Inlet Temp High Error
Failure code [CA3253] KDOC Temp Error - Non Regeneration
Failure code [CA3254] KDOC Outlet Temp High Error 1
Failure code [CA3255] KDPF Temp Error - Non Regeneration
Failure code [CA3256] KDPF Outlet Temp High Error 1
Failure code [CA3311] KDOC Outlet Temp High Error 2
Failure code [CA3312] KDPF Outlet Temp High Error 2
Failure code [CA3313] KDOC Inlet Temp Sensor Low Error
Failure code [CA3314] KDOC Inlet Temp Sens High Error
Failure code [CA3315] KDOC Inlet Temp Sens In Range Error
Failure code [CA3316] KDOC Outlet Temp Sens Low Error
Failure code [CA3317] KDOC Outlet Temp Sens High Error
Failure code [CA3318] KDOC Outlet Temp Sens In Range Error
Failure code [CA3319] KDPF Outlet Temp Sens High Error
Failure code [CA3321] KDPF Outlet Temp Sens Low Error
Failure code [CA3322] KDPF Outlet Temp Sens In Range Error
Failure code [CA3419] Mass Air Flow Sensor Sup Volt High Error
Failure code [CA3421] Mass Air Flow Sensor Sup Volt Low Error59 topics
  • Failure code [CA3741] Rail Press Valve Trip 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
  • Failure code [DA22KK] Pump Solenoid Power Low Error
  • Failure code [DA25KP] 5V Sensor 1 Power Abnormality
  • Failure code [DA26KP] 5V Sensor 2 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 Clog Sensor Open Circuit
  • Failure code [DHPAMA] F Pump Press Sensor Abnormality
  • Failure code [DHPBMA] R Pump Press Sensor Abnormality
  • Failure code [DHS3MA] Arm IN PPC Sen. Abnormality
  • Failure code [DHS4MA] Bucket Curl PPC Press Sensor Abnormality
  • Failure code [DHS8MA] Boom Raise PPC Press Sensor Abnormality
  • Failure code [DHS9MA] Boom LOWER 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 Abnormality
  • Failure code [DHSFMA] Travel Fwd LH PPC Press Sensor Abnormality
  • Failure code [DHSGMA] Travel Fwd RH PPC Press Sensor Abnormality
  • Failure code [DHSHMA] Travel Rev LH PPC Press Sensor Abnormality
  • Failure code [DHSJMA] Travel Rev RH PPC Press Sensor Abnormality
  • Failure code [DKA0KA] Failure of Boom Angle Sensor (Open circuit)
  • Failure code [DKA0KB] Failure of Boom Angle Sensor (Short circuit)
  • Failure code [DKA0PH] Boom Angle Sensor installation error
  • Failure code [DKR0MA] F Pump Swash Plate Sensor Abnormality
  • Failure code [DKR1MA] R 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 [DW4GKA] Boom slow down EPC sol disconnection
  • Failure code [DW4GKB] Boom slow down EPC 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 [DWK0KA] 2-Stage Relief Sol Open Circuit
Failure code [DWK0KB] 2-Stage Relief Sol Short Circuit
Failure code [DWK2KA] Variable Back Press Sol Open Circuit
Failure code [DWK2KB] Variable Back Press Sol Short Circuit
Failure code [DWK8KA] Swing Press C/O Sol Open Circuit
Failure code [DWK8KB] Swing Press C/O Sol Short Circuit
Failure code [DXA8KA] PC-EPC (F) Sol Open Circuit
Failure code [DXA8KB] PC-EPC (F) Sol Short Circuit
Failure code [DXA9KA] PC-EPC (R) Sol Open Circuit
Failure code [DXA9KB] PC-EPC (R) Sol Short Circuit
Failure code [DXE0KA] LS-EPC Sol Open Circuit
Failure code [DXE0KB] LS-EPC Sol Short Circuit
Failure code [DXE4KA] Attachment Flow EPC Open Circuit
Failure code [DXE4KB] Attachment Flow EPC Short Circuit
Failure code [DXE5KA] Merge-divide Main Sol Open Circuit
Failure code [DXE5KB] Merge-divide Main Sol Short Circuit
Failure code [DXE6KA] Merge-divide LS Sol Open Circuit
Failure code [DXE6KB] Merge-divide LS Sol 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)
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 nothing1 topic
  • monitor lights up in yellow
Engine coolant temperature monitor lights up in red while engine is running
Hydraulic oil temperature monitor lights up in white 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
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)2 topics
  • maximum
    • nor empty)
Hydraulic oil temperature gauge does not move from minimum or maximum2 topics
  • empty)
    • condition
Some areas of machine monitor screen are not displayed
Function switch does not work26 topics
  • 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 locked
  • 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 sounding
  • 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)17 topics
  • Information described in troubleshooting table (H-mode)
  • System chart of hydraulic and mechanical systems
  • Failure mode and cause table
  • All of work equipment, swing and travel operation lacks 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 large
    • move
One-touch power maximizing function does not operate1 topic
  • slower
In combined operations of swing and boom RAISE, boom rising speed is low
In combined operations 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)2 topics
  • direction
    • 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 holding brake is applied
Swing drift on a slope is large while swing holding 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)
Information mentioned in troubleshooting table (S mode)
When starting switch is turned to START position, engine does not crank
Engine cranks but no exhaust smoke comes out1 topic
  • start)
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 (KDPF clogs up early)
Engine oil consumption is excessive
Engine oil becomes contaminated early
Fuel consumption is excessive
Oil is in coolant (or coolant spurts or coolant level goes down)
Engine oil pressure drops
Fuel is contaminated in engine oil
Coolant is contaminated in engine oil (Oil becomes cloudy white)
Coolant temperature rises too high (overheating)
Unusual noise is heard
Vibration is excessive
Air cannot be bled from fuel circuit
Active regeneration is executed frequently
Active regeneration takes time
White smoke is exhausted during active regeneration
Disassembly and assembly
Related information on disassembly and assembly
How to read this manual
Coating materials list
Special tools list
Sketches of special tools53 topics
  • 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 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 KDPF assembly
  • Disassembly and assembly of KDPF assembly
  • Removal and installation of KCCV assembly
  • Removal and installation of air cleaner assembly
  • Removal and installation of EGR (Exhaust Gas Recirculation) valve assembly
  • Removal and installation of EGR (Exhaust Gas Recirculation) cooler assembly
  • Removal and installation of travel motor and final drive assembly
  • Disassembly and assembly of final drive
  • 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 counterweight assembly for maintenance
  • 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'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 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 sensor
Removal and installation of KOMTRAX terminal
Maintenance standard
Engine mount
Sprocket
Idler
Track roller
Carrier roller
Track shoe
Attachment circuit selector valve (for high-pressure circuit)
Attachment circuit selector valve (for low-pressure circuit)
Center swivel joint
Work equipment cylinder
Appendix
Air conditioner components
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)28 topics
  • 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
  • Information in troubleshooting table
  • Failure code list related to air conditioner
  • 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
  • Troubleshooting for power supply system (Air conditioner does not operate)
  • Troubleshooting for compressor and refrigerant system (Air is not cooled)
  • 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
  • Desiccant replacement
Diagrams and drawings
Hydraulic circuit diagram2 topics
  • Symbols in hydraulic circuit diagram
  • Hydraulic circuit diagram
Electric circuit diagram3 topics
  • Symbols in electric circuit diagram
  • Electrical circuit diagram
  • Electrical circuit diagram of air conditioner unit

Inside this manual

Real pages from this service manual (1,755 pages). Open the sample pages (PDF, 824 KB)

Sample pages from the Komatsu PC228USLC-10 Mini Excavator Service Manual: Specifications, Troubleshooting, Diagram, Foldout diagram
  • Specifications, page 73: 01 Specification
  • Troubleshooting, page 802: Failure code [CA555] Crankcase Press High Error 1
  • Diagram, page 883: Procedure, measuring location, criteria and remarks
  • Foldout diagram: PC228USLC-10

Other manuals for this machine

Save 10% on 2 manuals, 15% on 3 or more. Other manuals for the PC228USLC-10 are listed below. Editions cover different serial number ranges: check the serial coverage and tick only the ones that match your machine.

This manual: Service Manual SEN06483-04$179.61
Other manuals for the PC228USLC-10

Operator's manuals

Details

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, 1,755 pages

Quantity one is the manual described above.

Fast free USA shipping

Ships in 1 business day.

60-day returns

Free if the mistake is ours. A manual ordered in error must come back unopened in its shrink-wrap; you pay return shipping and a 20% restocking fee applies. Return policy

Binder not included

Manuals over about 300 pages may need a standard 3-ring binder, which you can buy locally to keep the pages organized for shop use.

Questions about model, serial number, engine coverage or contents? Contact us before purchasing and we'll help confirm it's the right manual. Please verify the manual type, machine model, serial number range and engine coverage before purchasing: manuals ordered in error carry a 20% restocking fee (return policy).