Komatsu PC170LC-11 Hydraulic Excavator Service Manual
2,486 pages · Publication SEN06607-03
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- Models
- PC170LC-11
- Serial coverage
- 35001 and up
- Manual type
- Service Manual
- Pages
- 2,486
- Publication
- SEN06607-03
- Condition
- Brand new

What's inside
From the manual's own table of contents: 376 sections, 700 entries. See sample pages (PDF, 979 KB)
Show all 376 sections
OVERHEAT PREVENTION SYSTEM3 topics
- TURBOCHARGER PROTECTION SYSTEM
- AUTOMATIC IDLE STOP SYSTEM
- COMPONENT PARTS OF ENGINE SYSTEM
COOLING SYSTEM4 topics
- LAYOUT DRAWING OF COOLING SYSTEM
- FAN SPEED CONTROL SYSTEM OF FAN CLUTCH
- ENGINE OUTPUT CONTROL SYSTEM OF FAN CLUTCH
- COMPONENT PARTS OF COOLING SYSTEM
CONTROL SYSTEM5 topics
- LAYOUT DRAWING OF CONTROL SYSTEM
- MACHINE MONITOR SYSTEM
- KomVision SYSTEM
- KOMTRAX SYSTEM
- COMPONENT PARTS OF CONTROL SYSTEM
HYDRAULIC SYSTEM5 topics
- LAYOUT DRAWING OF HYDRAULIC SYSTEM
- CLSS
- ENGINE AND PUMP COMBINED CONTROL SYSTEM
- PUMP AND VALVE CONTROL SYSTEM
- COMPONENT PARTS OF HYDRAULIC SYSTEM
WORK EQUIPMENT SYSTEM6 topics
- LAYOUT DRAWING OF WORK EQUIPMENT SYSTEM
- POWER MAXIMIZING SYSTEM
- PPC LOCK SYSTEM
- WORK EQUIPMENT AND TRAVEL AUTOMATIC LOCK SYSTEM
- OIL FLOW ADJUSTER SYSTEM FOR ATTACHMENT
- COMPONENT PARTS OF WORK EQUIPMENT SYSTEM
SWING SYSTEM3 topics
- LAYOUT DRAWING OF SWING SYSTEM
- SWING CONTROL SYSTEM DIAGRAM
- COMPONENT PARTS OF SWING SYSTEM
TRAVEL SYSTEM3 topics
- LAYOUT DRAWING OF TRAVEL SYSTEM
- TRAVEL CONTROL SYSTEM DIAGRAM
- COMPONENT PARTS OF TRAVEL SYSTEM
UNDERCARRIAGE AND FRAME1 topic
- LAYOUT DRAWING OF UNDERCARRIAGE
WORK EQUIPMENT4 topics
- STRUCTURE OF WORK EQUIPMENT
- FUNCTION OF WORK EQUIPMENT
- WORK EQUIPMENT CLEARANCE ADJUSTMENT SHIM
- BUCKET CLEARANCE ADJUSTMENT SHIM
CAB AND ITS ATTACHMENTS3 topics
- ROPS CAB
- CAB MOUNT
- CAB TIPPING STOPPER
STANDARD VALUE TABLE FOR ENGINE1 topic
- STANDARD VALUE TABLE FOR ENGINE: PC170LC-11
STANDARD VALUE TABLE FOR MACHINE2 topics
- STANDARD VALUE TABLE FOR MACHINE: PC170LC-11
- MACHINE POSTURE AND PROCEDURE FOR MEASURING PERFORMANCE
RELATED INFORMATION ON TROUBLESHOOTING17 topics
- GENERAL TROUBLESHOOTING POINTS
- TROUBLESHOOTING POINTS FOR UREA SCR SYSTEM
- SEQUENCE OF EVENTS IN TROUBLESHOOTING
- CHECKS BEFORE TROUBLESHOOTING
- INSPECTION PROCEDURE BEFORE TROUBLESHOOTING
- TESTING IN ACCORDANCE WITH TESTING PROCEDURE
- PREPARATION FOR TROUBLESHOOTING OF ELECTRICAL SYSTEM
- PROCEDURE FOR TESTING AND TROUBLESHOOTING
- SYMPTOMS OF FAILURE AND TROUBLESHOOTING NUMBERS
- INFORMATION DESCRIBED IN TROUBLESHOOTING TABLE
- SOR SYSTEM
- CONNECTOR LIST AND LAYOUT
- CONNECTOR CONTACT IDENTIFICATION
- BOX AND T-BRANCH ADAPTER TABLE
- FUSE LOCATION TABLE
- PRECAUTIONS FOR REPLACING KDOC
- FAILURE CODES TABLE
TROUBLESHOOTING BY FAILURE CODE (DISPLAY OF CODE)37 topics
- FAILURE CODE [879AKA]
- FAILURE CODE [879AKB]
- FAILURE CODE [879BKA]
- FAILURE CODE [879BKB]
- FAILURE CODE [879CKA]
- FAILURE CODE [879CKB]
- FAILURE CODE [879DKZ]
- FAILURE CODE [879EMC]
- FAILURE CODE [879FMC]
- FAILURE CODE [879GKX]
- FAILURE CODE [989L00]
- FAILURE CODE [989M00]
- FAILURE CODE [989N00]
- FAILURE CODE [A1U0N3]
- FAILURE CODE [A1U0N4]
- FAILURE CODE [A900FR]
- FAILURE CODE [A900N6]
- FAILURE CODE [A900NY]
- FAILURE CODE [AA10NX]
- FAILURE CODE [AB00KE]
- FAILURE CODE [AQ10MB]
- FAILURE CODE [AQ10N3]
- FAILURE CODE [AS00N3]
- FAILURE CODE [AS00R2]
- FAILURE CODE [AS00R3]
- FAILURE CODE [AS00R4]
- FAILURE CODE [AS00R5]
- FAILURE CODE [AS00R6]
- FAILURE CODE [AS00ZK]
- FAILURE CODE [AS10KM]
- FAILURE CODE [AS10NR]
- FAILURE CODE [AS10NT]
- FAILURE CODE [B@BAZG]
- FAILURE CODE [B@BAZK]
- FAILURE CODE [B@BCNS]
- FAILURE CODE [B@BCZK]
- FAILURE CODE [B@HANS]
FAILURE CODE [CA1673]58 topics
- FAILURE CODE [CA1677]
- FAILURE CODE [CA1678]
- FAILURE CODE [CA1682]
- FAILURE CODE [CA1683]
- FAILURE CODE [CA1684]
- FAILURE CODE [CA1686]
- FAILURE CODE [CA1691]
- FAILURE CODE [CA1694]
- FAILURE CODE [CA1695]
- FAILURE CODE [CA1696]
- FAILURE CODE [CA1712]
- FAILURE CODE [CA1713]
- FAILURE CODE [CA1714]
- FAILURE CODE [CA1715]
- FAILURE CODE [CA1776]
- FAILURE CODE [CA1777]
- FAILURE CODE [CA1843]
- FAILURE CODE [CA1844]
- FAILURE CODE [CA1885]
- FAILURE CODE [CA1887]
- FAILURE CODE [CA1896]
- FAILURE CODE [CA1898]
- FAIULER CODE [CA1938]
- FAILURE CODE [CA1942]
- FAILURE CODE [CA1961]
- FAILURE CODE [CA1962]
- FAILURE CODE [CA2185]
- FAILURE CODE [CA2186]
- FAILURE CODE [CA2198]
- FAILURE CODE [CA2249]
- FAILURE CODE [CA2272]
- FAILURE CODE [CA2288]
- FAILURE CODE [CA2311]
- FAILURE CODE [CA2349]
- FAILURE CODE [CA2353]
- FAILURE CODE [CA2357]
- FAILURE CODE [CA2373]
- FAILURE CODE [CA2374]
- FAILURE CODE [CA2375]
- FAILURE CODE [CA2376]
- FAILURE CODE [CA2387]
- FAILURE CODE [CA2554]
- FAILURE CODE [CA2634]
- FAILURE CODE [CA2635]
- FAIULER CODE [CA2636]
- FAILURE CODE [CA2637]
- FAILURE CODE [CA2771]
- FAILURE CODE [CA2961]
- FAILURE CODE [CA2973]
- FAILURE CODE [CA2976]
- FAILURE CODE [CA3142]
- FAILURE CODE [CA3143]
- FAILURE CODE [CA3144]
- FAILURE CODE [CA3146]
- FAILURE CODE [CA3147]
- FAILURE CODE [CA3148]
- FAILURE CODE [CA3151]
- FAILURE CODE [CA3165]
FAILURE CODE [CA4249]58 topics
- FAILURE CODE [CA4251]
- FAILURE CODE [CA4261]
- FAILURE CODE [CA4277]
- FAILURE CODE [CA4459]
- FAILURE CODE [CA4461]
- FAILURE CODE [CA4533]
- FAILURE CODE [CA4534]
- FAILURE CODE [CA4731]
- FAILURE CODE [CA4732]
- FAILURE CODE [CA4739]
- FAILURE CODE [CA4768]
- FAILURE CODE [CA4769]
- FAILURE CODE [CA4842]
- FAILURE CODE [CA4952]
- FAILURE CODE [CA5115]
- FAILURE CODE [CA5179]
- FAILURE CODE [CA5181]
- FAILURE CODE [CA5387]
- FAILURE CODE [CA5388]
- FAILURE CODE [CA5389]
- FAILURE CODE [CA5391]
- FAILURE CODE [CA5392]
- FAILURE CODE [CA5393]
- FAILURE CODE [CA5394]
- FAILURE CODE [CA5395]
- FAILURE CODE [CA5396]
- FAILURE CODE [CA5631]
- FAILURE CODE [CA5632]
- FAILURE CODE [CA5938]
- FAILURE CODE [D110KB]
- FAILURE CODE [D19JKZ]
- FAILURE CODE [D811MC]
- FAILURE CODE [D862KA]
- FAILURE CODE [D8ALKA]
- FAILURE CODE [D8ALKB]
- FAILURE CODE [D8AQKR]
- FAILURE CODE [DA20MC]
- FAILURE CODE [DA22KK]
- FAILURE CODE [DA25KP]
- FAILURE CODE [DA29KQ]
- FAILURE CODE [DA2LKA]
- FAILURE CODE [DA2LKB]
- FAILURE CODE [DA2QKR]
- FAILURE CODE [DA2RKR]
- FAILURE CODE [DAF0KM]
- FAILURE CODE [DAF0MB]
- FAILURE CODE [DAF0MC]
- FAILURE CODE [DAF8KB]
- FAILURE CODE [DAF9KQ]
- FAILURE CODE [DAFGMC]
- FAILURE CODE [DAFLKA]
- FAILURE CODE [DAFLKB]
- FAILURE CODE [DAFQKR]
- FAILURE CODE [DAZ9KQ]
- FAILURE CODE [DAZQKR]
- FAILURE CODE [DB2QKR]
- FAILURE CODE [DB2RKR]
- FAILURE CODE [DBP0KM]
FAILURE CODE [DWNSKB]23 topics
- FAILURE CODE [DWNSKY]
- FAILURE CODE [DXA8KA]
- FAILURE CODE [DXA8KB]
- FAILURE CODE [DXE4KA]
- FAILURE CODE [DXE4KB]
- FAILURE CODE [DXE4KY]
- FAILURE CODE [DXE7KA]
- FAILURE CODE [DXE7KB]
- FAILURE CODE [DXE7KY]
- FAILURE CODE [DXE8KA]
- FAILURE CODE [DXE8KB]
- FAILURE CODE [DXE8KY]
- FAILURE CODE [DXE9KA]
- FAILURE CODE [DXE9KB]
- FAILURE CODE [DXE9KY]
- FAILURE CODE [DXEAKA]
- FAILURE CODE [DXEAKB]
- FAILURE CODE [DXEAKY]
- FAILURE CODE [DY20KA]
- FAILURE CODE [DY20MA]
- FAILURE CODE [DY2CKB]
- FAILURE CODE [DY2DKB]
- FAILURE CODE [DY2EKB]
TROUBLESHOOTING OF ELECTRICAL SYSTEM (E-MODE)20 topics
- ENGINE DOES NOT START (ENGINE DOES NOT CRANK)
- MANUAL PREHEAT SYSTEM MALFUNCTION
- AUTOMATIC PREHEAT SYSTEM MALFUNCTION
- PREHEAT MONITOR LIGHT DISPLAY IS OFF WHEN ENGINE IS PRE HEATED
- MONITOR DOES NOT DISPLAY WHEN THE START SWITCH IS IN THE ON POSITION
- ENGINE OIL LEVEL ILLUMINATES YELLOW
- MONITOR ILLUMINATES YELLOW
- OPERATES
- AIR CLEANER MONITOR ILLUMINATES YELLOW WHEN MACHINE OPERATES
- CHARGE LEVEL LIGHT ILLUMINATES RED WHEN MACHINE OPERATES
- FUEL LEVEL MONITOR ILLUMINATES RED WHEN MACHINE OPERATES
- WATER SEPARATOR MONITOR ILLUMINATES RED WHEN MACHINE OPERATES
- ATES
- FUEL GAUGE DISPLAY DOES NOT MOVE FROM MINIMUM OR MAXIMUM
- DISPLAY OF FUEL GAUGE DIFFERS FROM ACTUAL FUEL LEVEL
- OR MAXIMUM
- ANT TEMPERATURE
- MAXIMUM
- PERATURE
- SOME AREAS OF MACHINE MONITOR SCREEN ARE NOT DISPLAYED
MONITOR DOES NOT DISPLAY CHANGES IN MACHINE TRAVEL SPEED1 topic
- CHANGE
ABNORMAL ENGINE SPEEDS WHEN WORK EQUIPMENT IS ACTIVATED3 topics
- SWING
- BRAKE DOES NOT OPERATE
- CATOR NOT DISPLAYED ON MONITOR
LOW BUCKET SPEED OR POWER26 topics
- WORK EQUIPMENT DOES NOT MOVE WITH INDIVIDUAL FUNCTION
- HYDRAULIC DRIFT OF BOOM IS LARGE
- EXCESSIVE ARM DRIFT
- HYDRAULIC DRIFT OF BUCKET IS LARGE
- MENT MOVES
- TIME LAG OF WORK EQUIPMENT IS LARGE
- ONE-TOUCH POWER MAXIMIZING FUNCTION DOES NOT OPERATE
- ATTACHMENT CIRCUIT CANNOT BE CHANGED
- OIL FLOW IN ATTACHMENT CIRCUIT CANNOT BE CHANGED
- WORK EQUIPMENT IS SLOW IN COMBINED OPERATION
- BOOM RAISE SPEED IS SLOW WHEN COMBINED WITH SWING FUNCTION
- MACHINE DOES NOT TRAVEL STRAIGHT
- MACHINE IS NOT STEERED WELL OR STEERING POWER IS LOW
- TRAVEL SPEED IS LOW
- ONE OF TRACKS DOES NOT RUN
- TRAVEL SPEED DOES NOT CHANGE, OR TRAVEL SPEED IS TOO SLOW OR FAST
- UPPER STRUCTURE DOES NOT SWING BOTH TO THE RIGHT AND LEFT
- SWINGS ONLY IN ONE DIRECTION
- LEFT)
- ONE DIRECTION
- RIGHT AND LEFT)
- DIRECTION EITHER RIGHT OR LEFT)
- SHOCK IS LARGE WHEN UPPER STRUCTURE STOPS SWINGING
- LARGE UNUSUAL NOISE IS HEARD WHEN UPPER STRUCTURE STOPS SWINGING
- FAN SPEED IS ABNORMAL (TOO HIGH OR LOW, OR STATIONARY)
- UNUSUAL NOISE IS HEARD FROM AROUND FAN
TROUBLESHOOTING OF ENGINE (S-MODE)18 topics
- INFORMATION MENTIONED IN TROUBLESHOOTING TABLE (S MODE)
- ENGINE CRANKS BUT NO EXHAUST GAS COMES OUT
- BUT DOES NOT START)
- ENGINE IS HARD TO START
- ENGINE DOES NOT PICK UP SMOOTHLY
- ENGINE STOPS DURING OPERATION
- ENGINE RUNS ROUGH OR IS UNSTABLE
- LOW ENGINE POWER
- BLACK EXHAUST SMOKE
- EXCESSIVE OIL CONSUMPTION
- EXCESSIVE OIL CONTAMINATION
- EXCESSIVE FUEL CONSUMPTION
- HIGH COOLANT PRESSURE OR OIL CONTAMINATION
- RAPID OIL PRESSURE LOSS
- FUEL CONTAMINATION OF ENGINE OIL
- OIL IS CONTAMINATED BY COOLANT
- COOLANT TEMPERATURE RISES TOO HIGH (OVERHEATING)
- ABNORMAL SOUND FROM MACHINE
SEPARATION AND CONNECTION OF TRACK ASSEMBLY23 topics
- REMOVE AND INSTALL SPROCKET
- REMOVE AND INSTALL IDLER AND IDLER CUSHION ASSEMBLY
- DISASSEMBLE AND ASSEMBLE IDLER ASSEMBLY
- DISASSEMBLE AND ASSEMBLE OF IDLER CUSHION ASSEMBLY
- DISASSEMBLE AND ASSEMBLE TRACK ROLLER ASSEMBLY
- DISASSEMBLEAND ASSEMBLE CARRIER ROLLER ASSEMBLY
- REMOVE AND INSTALL REVOLVING FRAME ASSEMBLY
- REMOVE AND INSTALL COUNTERWEIGHT ASSEMBLY
- REMOVE AND INSTALL CENTER SWIVEL JOINT ASSEMBLY
- DISASSEMBLE AND ASSEMBLE CENTER SWIVEL JOINT ASSEMBLY
- REMOVE AND INSTALL HYDRAULIC TANK ASSEMBLY
- REMOVE AND INSTALL MAIN PUMP ASSEMBLY
- REMOVE AND INSTALL CONTROL VALVE ASSEMBLY
- DISASSEMBLE AND ASSEMBLE CONTROL VALVE ASSEMBLY
- DISASSEMBLE AND ASSEMBLE WORK EQUIPMENT PPC VALVE ASSEMBLY
- REMOVE AND INSTALL WORK EQUIPMENT ASSEMBLY
- DISASSEMBLE AND ASSEMBLE WORK EQUIPMENT CYLINDER ASSEMBLY
- REMOVE AND INSTALL OPERATOR'S CAB ASSEMBLY
- REMOVE AND INSTALL OPERATOR CAB GLASS (ADHERED GLASS)
- REMOVE AND INSTALL FRONT WINDOW ASSEMBLY
- REMOVE AND INSTALL FLOOR FRAME ASSEMBLY
- REMOVE AND INSTALL AIR CONDITIONER UNIT ASSEMBLY
- REMOVE AND INSTALL OPERATOR'S SEAT
Inside this manual
Real pages from this service manual (2,486 pages). Open the sample pages (PDF, 978 KB)
- Troubleshooting, page 1,242: FAILURE CODE [CA4169]
- Diagram, page 1,394: Open or short circuit in
- Specifications, page 2,344: MAINTENANCE STANDARD OF BOOM CYLINDER
- Color page, page 247: 9: Pump secondary drive switch
- Color page, page 350: 8: Main pump
- Foldout diagram: ELECTRICAL CIRCUIT DIAGRAM (1/8)
Other manuals for this machine
Save 10% on 2 manuals, 15% on 3 or more. Other manuals for the PC170LC-11 are listed below. Editions cover different serial number ranges: check the serial coverage and tick only the ones that match your machine.
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This is a service manual
Here's how it compares to the other manual types.
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, 2,486 pages
Quantity one is the manual described above.
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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).