1989-1994 Komatsu PC10-7, PC15-3, PC20-7 Excavator Shop Manual
For PC10-7, PC15-3, PC20-7: diagnostics, service, and parts replacement procedures. Includes engine, chassis, hydraulic, and electrical system coverage.
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Models Covered & Key Technical Specifications
Complete Shop Operator's Manual: Mini Excavator Komatsu PC10-7, PC15-3, PC20-7 Mini Excavator Shop Manual - Comprehensive Maintenance & Repair Procedures 1989-1994 Electrical-Reference Komatsu PC10-7, PC15-3, PC20-7 (020P07) -- 1989-1994 Specialized Dossier Set | Resource Set.
- Nominal Throughput Data: 2,675±50 rpm establishes the baseline engine speed for idle operation.
- Principal Angular Speed: For optimal operation, 2,500 rpm defines the rated speed limit Framework.
- Rated Package Size: The engine requires 20A to provide auxiliary power.
- Calibrated Moment Values: The hydraulic pump requires 35 L for adequate lubrication and cooling.
- Documented Fit Tolerances: The track frame assembly requires 298 mm for standard chassis configuration Benchmarks.
- Design Speed Rating: The swing motor assembly requires 16.8 kg for proper operation Range.
Manual Description & Preview
Complete Shop Operator's Manual: Mini Excavator Komatsu PC10-7, PC15-3, PC20-7 Mini Excavator Shop Manual - Comprehensive Maintenance & Repair Procedures 1989-1994 Electrical-Reference
System-Coverage: Komatsu PC10-7, PC15-3, PC20-7 (020P07) / Product-Line: Mini Excavator / 3D78N-1B, 3D84N-2K, 3D84N-2H Logic / Maintenance-Category: 1989-1994 Comprehensive Maintenance & Repair Procedures
| Specification | Technical-Path | Framework |
|---|---|---|
| Engine Speed | High Idle | 2,675±50 rpm |
| Low Idle | 900±50 rpm | |
| Rated Speed | 2,500 rpm | |
| Exhaust Gas | At sudden accel | Bosch index 5.5 |
| At high idle | Bosch index 1.5 | |
| Intake Valve | 0.20 mm | |
| Exhaust Valve | 0.20 mm | |
| Compression | SAE 30 oil | 25 kg/cm³ (250 rpm) |
| Oil Pressure | At low idling | Min. 1.5 kg/cm³ |
Providing a structural breakdown of the operations detailed within this manual, covering essential machine systems and procedures. Effectively calling for the detailed technical information within, this document serves as a vital resource for any Komatsu mini excavator owner or technician.
Timing procedures are documented for engine timing operations, including setting the fuel injection pump and related components.
Technical notes are provided for troubleshooting common issues related to the hydraulic system, including control levers, pumps, and cylinders.
Quality checks are addressed for various components, such as valve clearance and engine oil pressure, ensuring proper machine function.
The Engine section documents detailed information on its structure, function, and maintenance.
The troubleshooting chapter addresses system-wide issues, offering guidance for electrical, hydraulic, and mechanical malfunctions.
This manual documents torque specifications for various components to ensure proper pressure slip prevention.
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