2000s Komatsu PC30R-8, PC35R-8, PC40R-8, PC45R-8 Service Manual

Comprehensive service and repair manual for Komatsu PC30R-8, PC35R-8, PC40R-8, PC45R-8 mini excavators, covering diagnostics, service, and parts. Publication SEBM012604.

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Document Details

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Document Number / Seller:
27583 / Steven Mason
File Size:
24.54 MB
File Type:
PDF
Language:
English
Pages:
588
Printable:
Yes
Category:
Mini Excavator
Last updated / verified
Apr 23, 2025

Models Covered & Key Technical Specifications

Komatsu PC30R-8, PC35R-8, PC40R-8, PC45R-8 (SEBM012604) – 2000s

Technical Briefing | File

  • Documented Tightening Data: 4.41 ± 0.49 Nm specifies the fastening torque for nozzle holder mounting.
  • Technical Fill Levels: 0.20 mm indicates the standard valve clearance for intake valves.
  • Universal Fuel Injection Timing: 14 ± 1 deg. provides the precise timing before top dead center.
  • Maximum Compression Pressure: 2.55 kg/cm² signifies the engine's compression at rated speed.
  • System Engine Oil Pressure: Min. 0.1 MPa establishes the minimum acceptable oil pressure at low idling.
  • Prescribed Cooling System: 4.4 ¬ defines the radiator's water capacity for optimal operation.

Professional Workshop Service Manual & Technical Specifications

Industrial Workshop Manual: Komatsu PC30R-8, PC35R-8, PC40R-8, PC45R-8 - Comprehensive Service & Repair Manual Chassis-Documentation

Design-Core: PC30R-8, PC35R-8, PC40R-8, PC45R-8 // Coverage-Scope: Mini Excavator / Hydraulic System Logic // System-Coverage: Detailed procedures and specifications.

Coverage is segmented into: GENERAL, STRUCTURE AND FUNCTION, TESTING AND ADJUSTING, DISASSEMBLY AND ASSEMBLY, MAINTENANCE STANDARD, and OTHERS. The manual details engine specifications, hydraulic systems, electrical diagrams, and troubleshooting guides. It provides a pathway to understanding the machine's intricacies.

Assessment-Parameter Operational-Logic Validation-Data
Component Diagrams System Breakdown Illustrated Layouts
Maintenance Specs Operational Limits Standard Values
Troubleshooting Fault Diagnosis Flowcharts
Parts Information Component Listing Part Numbers
Electrical Systems Wiring Diagrams Circuit Traces

Quality checks are addressed for engine speed and oil pressure. The hydraulic system documents flow rates and pressures. The troubleshooting chapter addresses common issues with detailed diagnostics. Cooling system maintenance is addressed in specifications. Testing requirements are specified for various components. The manual documents torque specifications for fasteners to ensure proper tightening torque.

FAQ

Check the **standard** engine oil pressure. keyboard_arrow_down

Min. 0.1 MPa {Min. 1.0 kg/cm²} is required for engine oil pressure at low idling.

What does the **necessary** valve clearance adjustment entail? keyboard_arrow_down

25.48 ± 2.94 Nm {2.6 ± 0.3 kgm} is the specified locknut torque for valve clearance adjustments.

Reference the **recommended** fuel injection timing. keyboard_arrow_down

14 ± 1 deg. is the recommended fuel injection timing before the top dead center.

What are the **calibrated** hydraulic oil capacities? keyboard_arrow_down

For PC30R/35R final drive cases, 0.7 ¬ is the calibrated hydraulic oil capacity.

Specify the **applicable** service interval parameters. keyboard_arrow_down

1.57 ± 0.1 {16 ± 1} mm is the specified LS differential pressure for travel levers that rotate freely.

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Reviews (5)

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Rated 5 out of 5 stars
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Rated 5 out of 5 stars
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Customer support responded swiftly with my download link!
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The troubleshooting section is particularly useful!
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Loved the clear diagrams and instructions!