Komatsu PC27MRX-1, PC30MRX-1, PC35MRX-1, PC40MRX-1, PC45MRX-1 Hydraulic Excavator Shop Manual (2003)
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Purchase Information
2003 Komatsu PC27MRX-1, PC30MRX-1, PC35MRX-1, PC40MRX-1, PC45MRX-1 Shop Manual - Technical Specifications
- Document Number / Seller:
- 23757 / Sharon Miller
- File Size:
- 55.86 MB
- File Type:
- Language:
- English
- Pages:
- 947
- Printable:
- Yes
- Estimated Download Time:
- 1.14 Minutes
- Delivery Format:
- Digital (PDF) - Instant Access
- Category:
- Mini Excavator
- Brand:
- Komatsu
- Reviewed and Approved:
- Oct 30, 2025
Komatsu Models and Parts Covered in this Mini Excavator Manual
- Komatsu PC27MRX-1 (2003)
- Komatsu PC30MRX-1 (2003)
- Komatsu PC35MRX-1 (2003)
- Komatsu PC40MRX-1 (2003)
- Komatsu PC45MRX-1 (2003)
- Komatsu PC27MR-1 (2003)
- Komatsu PC30MR-1 (2003)
- Komatsu PC35MR-1 (2003)
- Komatsu PC40MR-1 (2003)
- Komatsu PC45MR-1 (2003)
- Komatsu PC27MRX-1 Canopy (2003)
- Komatsu PC27MRX-1 Cab (2003)
- Komatsu PC30MRX-1 Canopy (2003)
- Komatsu PC30MRX-1 Cab (2003)
- Komatsu PC35MRX-1 Canopy (2003)
- Komatsu PC35MRX-1 Cab (2003)
- Komatsu PC40MRX-1 Canopy (2003)
- Komatsu PC40MRX-1 Cab (2003)
- Komatsu PC45MRX-1 Canopy (2003)
- Komatsu PC45MRX-1 Cab (2003)
Complete Manual Information
Komatsu PC27MRX-1 to PC45MRX-1 Shop Manual - 2003 Edition
This professional-grade Shop Manual provides factory-sanctioned repair procedures for the PC27 through PC45 series, ensuring equipment operates within original design tolerances. Proper adherence to the specified 194.6 mm standard work equipment dimensions for the PC35MRX-1 is critical for maintaining kinematic accuracy and preventing premature linkage wear during high-cycle excavation. These technical benchmarks ensure maximum uptime by eliminating guesswork during structural overhauls.
Machine Applicability & Serial Number Ranges
- PC27MRX-1 Series: SN 11574 and up (Equipped with 3D82AE-3 Engine)
- PC30MRX-1 Series: SN 10001 and up (Equipped with 3D84E-3 Engine)
- PC35MRX-1 Series: SN 3930 and up (Equipped with 3D84E-3 Engine)
- PC40MRX-1 Series: SN 1001 and up (Equipped with 4D84E-3 Engine)
- PC45MRX-1 Series: SN 1001 and up (Equipped with 4D88E-3 Engine)
Operational Reliability & Safety Integration
- Factory-verified troubleshooting flowcharts reduce diagnostic downtime and prevent unnecessary component replacement.
- Precise hydraulic pressure settings protect sensitive valve banks from cavitation and thermal degradation.
- Safety-critical disassembly sequences ensure technician protection when handling high-tension recoil springs or pressurized accumulators.
Document Specifications
- Publication Number: SEBM016808
- Total Pagination: 925 Pages
- Format: High-Resolution Technical PDF
Technical Depth & Factory Benchmarks
Calibration data covers the full range of hydraulic performance metrics, including relief valve settings and pump flow rates essential for the MRX-1 series' zero-tail-swing functionality. Engineering tolerances for internal pin clearances and bushing diameters are provided to facilitate precise "like-new" component restoration.
System Architecture & Visual Navigation
Detailed hydraulic and electrical schematics allow for rapid tracing of signal paths across the main control valve and joystick pilot lines. Cross-sectional diagrams of the final drive and swing motor assemblies provide clarity for complex mechanical rebuilds.
Primary Sectional Breakdown
- 01 General Information & Machine Identification
- 10 Structure and Function (Pump, Valve, Motor)
- 20 Testing and Adjusting (Pressure, Speed, Drift)
- 30 Disassembly and Assembly (Engine, Undercarriage, Boom)
- 40 Maintenance Standard (Wear Limits, Torque Specs)
- 90 Others (Engine Overhaul Reference)
Operational Limits & Fluid Specifications
Engine lubrication requirements vary by displacement, specifically identifying the 3D82AE-3, 3D84E-3, 4D84E-3, and 4D88E-3 powerplants as the primary configurations. Standard maintenance dimensions, such as the 55.6 mm pin spacing or 60 mm bore diameters on specific work equipment, must be measured using precision calipers to ensure compliance with the 40-83 maintenance standard.
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Frequently Asked Questions - Komatsu Mini Excavator Manual
What does this Komatsu manual cover?
This comprehensive service manual covers detailed repair procedures, maintenance schedules, troubleshooting guides, and technical specifications for Komatsu PC27MRX-1, PC30MRX-1, PC35MRX-1, PC40MRX-1, PC45MRX-1 Hydraulic Excavator Shop Manual (2003). It includes information for the following models: - Komatsu PC27MRX-1 (2003) - Komatsu PC30MRX-1 (2003) - Komatsu PC35MRX-1 (2003) - Komatsu PC40MRX-1 (2003) - Komatsu PC45MRX-1 (2003) - Komatsu PC27MR-1 (2003) - Komatsu PC30MR-1 (2003) - Komatsu PC35MR-1 (2003) - Komatsu PC40MR-1 (2003) - Komatsu PC45MR-1 (2003) - Komatsu PC27MRX-1 Canopy (2003) - Komatsu PC27MRX-1 Cab (2003) - Komatsu PC30MRX-1 Canopy (2003) - Komatsu PC30MRX-1 Cab (2003) - Komatsu PC35MRX-1 Canopy (2003) - Komatsu PC35MRX-1 Cab (2003) - Komatsu PC40MRX-1 Canopy (2003) - Komatsu PC40MRX-1 Cab (2003) - Komatsu PC45MRX-1 Canopy (2003) - Komatsu PC45MRX-1 Cab (2003).
Is this manual suitable for beginners?
Yes, this Komatsu manual is designed for both professional technicians and DIY enthusiasts. It includes step-by-step procedures with clear illustrations and safety guidelines for Mini Excavator maintenance and repair.
What file format will I receive?
You will receive this manual as a PDF file (55.86 MB), which is compatible with all devices. The manual is fully searchable and printable for your convenience.
How quickly can I access the manual after purchase?
You'll receive instant access to your Komatsu Mini Excavator manual immediately after payment completion. The download link is valid for 3 days, with lifetime re-download guarantee.
Can I print specific sections of the manual?
Absolutely! This digital manual allows you to print any section you need, from individual pages to complete chapters, making it perfect for workshop use.
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