1996 Komatsu PC25-1 / PC30-7 / PC40-7 / PC45-1 Excavator Service & Repair Manual
Technician-level documentation for Komatsu PC series mini excavators—including detailed diagrams, specifications, and troubleshooting for models PC25-1, PC30-7, PC40-7, and PC45-1. Manual part number 020S07.
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Sample pages from the 1996 Komatsu PC25-1 / PC30-7 / PC40-7 / PC45-1 Excavator Service & Repair Manual manual
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Komatsu Models Covered & Key Technical Specifications
Models: PC25-1, PC30-7, PC40-7, PC45-1
Sub-models / Variants: 3D84-2D, 3D84-3B, 3D84-2E, 3D84-3A, 4D84-2A, 4D84-3C, 4D84-2B, 4D84E-3B
Build Years: 1996
Serial Numbers: PC25-1: 1001 and up, PC30-7: 18001 and up, PC40-7: 18001 and up, PC45-1: 1001 and up
Technical Data:
- Engine Speed (High Idling): 2,450–2,900 rpm
- Engine Speed (Rated): 2,450–2,700 rpm
- Valve Clearance (Intake/Exhaust): 0.20 mm
- Engine Compression Pressure: 2.9 MPa (30 kg/cm²)
- Engine Oil Pressure (High Idling): 0.3–0.35 MPa (3.0–3.5 kg/cm²)
- Hydraulic Tank Capacity: 65 liters
- Fuel Tank Capacity: 50 liters
Komatsu Manual Features & Content Preview
1996 Komatsu PC25-1, PC30-7, PC40-7, and PC45-1 Mini Excavator Service Manual
- Covers 1996 Komatsu PC25-1, PC30-7, PC40-7, and PC45-1 mini excavators including specific engine-variant serial number ranges from 1001 through 26423 and up
- Official Komatsu publication SEBM020S0707, printed May 1996
- Contains over 100 system-specific exploded-view diagrams, complete electrical circuit schematics, and detailed hydraulic system flow diagrams
- File delivered as a direct download the moment payment clears
- Indexed PDF search covers every chapter and appendix
- Stored against your account so you can retrieve it after a hard-drive loss
- This 387-page factory publication provides the essential reference data for maintaining the PC-series mini excavator hydraulic and powertrain assemblies
Component Structure and Function
The 1996 Komatsu PC25-1, PC30-7, PC40-7, and PC45-1 service manual details the structural design and operational function of primary machine systems. Major segments document the power train, swing circle machinery, and track frame recoil spring systems. Additional chapters explain the hydraulic piping configuration, hydraulic pump operation, and internal control functions of the 7-spool and 2-spool control valves. The what an OEM service publication covers includes detailed breakdowns of the PPC valve operation and travel speed acceleration solenoid valve logic.
Maintenance and Technical Specifications
This factory manual provides comprehensive maintenance standards for system inspections and assembly clearances. Technical data preview sections list engine compression values, standard tightening torques for bolts and nuts, and specific hydraulic tank capacities. The engine oil pressure is documented at 0.3–0.35 MPa (3.0–3.5 kg/cm²) during high-idling operations. Rated engine speed varies by model from 2,450 rpm to 2,700 rpm. The cooling system capacity is specified as 4.8 liters for the PC25-1 model.
Reference only — always consult a certified technician before performing service on this equipment.
An official 387-page Komatsu OEM workshop manual covering the 1996 PC25-1, PC30-7, PC40-7, and PC45-1, documenting engine, chassis, electrical, and hydraulic specifications for the series.
Document Reference: Publication SEBM020S0707, Printed May 1996
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