Komatsu PC18MR-3 Mini Excavator Service Manual
501 pages · Publication SEN04306-04
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- Models
- PC18MR-3
- Serial coverage
- 20001 and up
- Manual type
- Service Manual
- Pages
- 501
- Publication
- SEN04306-04
- Condition
- Brand new
What's inside
From the manual's own table of contents: 45 sections, 208 entries. See sample pages (PDF, 676 KB)
Show all 45 sections
Index and foreword11 topics
- Composition of shop manual
- Safety notice
- How to read the shop manual
- Explanation of terms for maintenance standard
- Handling of electric equipment and hydraulic component
- Handling of connectors newly used for engines
- How to read electric wire code
- Precautions when carrying out operation
- Method of disassembling and connecting push-pull type coupler
- Standard tightening torque table
- Conversion table
Specification5 topics
- Specification dimension drawing
- Working range drawing
- Specifications
- Weight table
- Table of fuel, coolant and lubricants
Structure, function and maintenance standard32 topics
- Cooling system
- Power train
- Swing circle
- Track frame
- Idler cushion
- Idler
- Track roller
- Sprocket
- Track shoe
- Hydraulic components layout drawing
- Hydraulic tank
- Center swivel joint
- Travel motor
- Hydraulic cylinder
- Solenoid valve
- Variable gauge valve
- Multi-control valve (If equipped)
- Hydraulic pump
- Control valve
- CLSS
- Operation for each function and valve
- Swing motor
- PPC valve
- Work equipment
- Dimensions of each part of work equipment
- Floor
- Engine control system
- Electric control system
- Component parts of system
- KOMTRAX system
- Monitor system
- Sensors
Standard value table2 topics
- Standard value table for engine related parts
- Standard value table for chassis related parts
Testing and adjusting30 topics
- List of testing, adjusting, and troubleshooting tools
- Measuring engine speed
- Measurement of exhaust gas color
- Adjusting valve clearance
- Testing compression pressure
- Testing engine oil pressure
- Testing and adjusting fuel injection timing
- Adjusting engine stop solenoid
- Bleeding air from fuel circuit
- Testing and adjusting fan belt tension
- Adjusting fuel control lever linkage
- Measurement of clearance in swing circle bearings
- Testing and adjusting track shoe tension
- Testing and adjusting oil pressures in work equipment, travel, swing, and blade circuits
- Testing and adjusting control circuit basic pressure
- Testing and adjusting pump LS differential pressure
- Measuring solenoid valve output pressure
- Measuring PPC valve output pressure
- Adjusting play of work equipment and swing PPC valves
- Measuring swing holding brake release pressure
- Testing oil leakage from cylinder
- Releasing residual pressure from hydraulic circuit
- Bleeding air from cylinder
- Pressurizing hydraulic tank
- How to open and close (tilt) floor
- Inspection procedures for diode
- How to start operation of KOMTRAX terminal
- Lamp display of KOMTRAX terminal
- Removal and installation of KOMTRAX terminal
- Preparation work for troubleshooting of electrical system
Troubleshooting54 topics
- Points to remember when troubleshooting
- Sequence of events in troubleshooting
- Checks before troubleshooting
- Classification and procedures of troubleshooting
- Connection table for connector pin numbers
- T- branch box and T- branch adapter table
- Before carrying out troubleshooting for electrical system (E-mode)
- Information contained in troubleshooting table
- E-1 Engine does not start
- E-2 Engine does not stop
- E-3 When starting switch is turned ON, any item does not operate
- E-4 When starting switch is turned ON, some items do not operate
- E-5 Alarm buzzer is abnormal
- E-6 Engine oil pressure caution is turned ON
- E-7 Charge level caution is turned ON
- E-8 Preheating system does not operate or preheater does not become hot
- E-9 Coolant temperature gauge is abnormal
- E-10 Fuel level gauge is abnormal
- E-11 Service meter does not operate while engine is running
- E-12 2nd travel speed is not selected
- E-13 Working lamp does not light up
- work equipment still moves
- E-15 Blade/Variable gauge selector system does not operate normally
- H-1 Speed or power of whole work equipment, travel, swing, and blade is low
- H-2 Engine speed lowers extremely or engine stalls
- H-3 Whole work equipment, travel system, swing system, and blade do not move
- H-4 Abnormal sound comes out from around hydraulic pump
- H-5 Fine control performance or response is low
- H-6 Speed or power of boom is low
- H-7 Speed or power of arm is low
- H-8 Speed or power of bucket is low
- H-9 Speed or power of boom swing is low
- H-10 Work equipment does not move singly
- H-11 Work equipment hydraulic drift is large
- H-12 Time lag of work equipment is large
- H-13 In compound operation of work equipment, speed of part loaded more is low
- H-14 Machine deviates during travel
- H-15 Travel speed or travel power is low
- H-16 Machine is not steered well or steering power is low
- H-17 Travel speed does not change
- H-18 Travel motor does not work (one side only)
- H-19 Speed or power of swing is low
- H-20 Machine does not swing
- H-21 Swing acceleration performance is low
- H-22 Machine overruns when it stops swinging
- H-23 Large shock is made when machine stops swinging
- H-24 When upper structure stops swinging, it makes large sound
- H-25 Hydraulic drift of swing is large
- H-26 Speed or power of blade is low
- H-27 Blade does not move
- H-28 Hydraulic drift of blade is large
- H-29 Variable gauge does not move
- H-30 Troubleshooting for hydraulic breaker
- Troubleshooting chart
Disassembly and assembly26 topics
- How to read this manual
- Coating materials list
- Special tool list
- Sketches of special tools
- Removal and installation of fuel injection pump assembly
- Removal and installation of radiator assembly
- Removal and installation of hydraulic oil cooler assembly
- Removal and installation of engine and hydraulic pump assembly
- Removal and installation of swing circle assembly
- Removal and installation of track shoe assembly
- Disassembly and assembly of idler assembly
- Disassembly and assembly of recoil spring
- Disassembly and assembly of track roller assembly
- Assembly of travel motor assembly
- Removal and installation of floor frame assembly
- Removal and installation of revolving frame
- Disassembly and assembly of hydraulic pump assembly
- Disassembly and assembly of control valve assembly
- Removal and installation of hydraulic system and center swivel joint assembly
- Disassembly and assembly of center swivel joint assembly
- Removal and installation of swing motor assembly
- Disassembly and assembly of swing motor assembly
- Disassembly and assembly of hydraulic cylinder assembly
- Disassembly and assembly of hydraulic breaker assembly
- Removal and installation of work equipment assembly
- Removal and installation of canopy
Diagrams and drawings3 topics
- Hydraulic circuit diagram
- Electrical circuit diagram
- Connector list and stereogram
Inside this manual
Real pages from this service manual (501 pages). Open the sample pages (PDF, 675 KB)
- Specifications, page 58: Specifications
- Diagram, page 324: E-9 Coolant temperature gauge is abnormal
- Troubleshooting, page 373: H-30 Troubleshooting for hydraulic breaker
- Foldout diagram, page 498: Electrical circuit diagram
Other manuals for this machine
Save 10% on 2 manuals, 15% on 3 or more. Other manuals for the PC18MR-3 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, 501 pages
Quantity one is the manual described above.
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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).