1988-1995 Komatsu Excavator PC300-5 / PC400-5 Shop Manual
Covers PC300-5, PC300LC-5, PC300HD-5, PC400-5, PC400LC-5, and their Mighty variants. Includes detailed procedures for maintenance, troubleshooting, disassembly, and assembly. Ref: CEBM207077
Komatsu Models Covered & Key Technical Specifications
Models: PC300-5, PC300LC-5, PC300LC-5K, PC300HD-5, PC300-5 MIGHTY, PC300LC-5 MIGHTY, PC400-5, PC400LC-5, PC400HD-5, PC400LC-5 MIGHTY
Sub-models / Variants: Loading Shovel, Variable Gauge
Trade Names: Komatsu Hydraulic Excavator
Model Years: 1988–1995
Serial Numbers: PC300-5: 20001 and up, PC300-5 MIGHTY: 21401 and up, PC400-5: 20001 and up, PC400-5 MIGHTY: 20603 and up, PC300HD-5: 21401 and up, PC400HD-5: 20603 and up
Technical Data:
- Hydraulic Tank Capacity: 315 liters (PC300 series) to 358 liters (PC400 series)
- Engine Oil Pan Capacity: 28.0 liters (PC300 series) to 38.0 liters (PC400 series)
- Swing Circle Grease Volume: 35 liters (G2-LI)
- Charging Pump Delivery: 32.3 cc/rev
- Final Drive Reduction Ratio: 36.275 (PC300 series) to 44.588 (PC400HD-5)
- Hydraulic Tank Oil Amount: 195 liters (PC300 series) to 255 liters (PC400 series)
Komatsu Manual Features & Content Preview
Komatsu PC300-5 & PC400-5 Shop Manual (OEM Reference)
This official 748-page OEM documentation delivers the exact technical standards required for professional maintenance on the 1988–1995 Komatsu excavator series. Covering all LC, HD, MIGHTY, and Loading Shovel configurations, it provides the precise factory data necessary to understand the structural and functional architecture of these heavy-duty machines.
- Instant download to your account for immediate workshop access
- Original OEM publication (CEBM207077) formatted for standard letter and A4 printing right at your toolbox
- Over 50 component-level exploded-view diagrams clarifying complex powertrain and swing machinery assemblies
- Full-text search to quickly locate specific part references during any repair assessment
- Permanent file availability in your account with no re-buy required
Technical Content & Workshop Value
Reliable reference data is the backbone of heavy machinery servicing. This manual directly supports your daily workshop routine by providing unrestricted access to the OLSS (Open Center Load Sensing System), cut-off controls, and pump-flow logic. Mechanics will find deep insight into the internal assembly of servo valves, the TVC valve, and CO/NC valve assemblies for both front and rear main pumps. Forget guessing. You get precise schematics that translate complex hydraulic circuits into clear, manageable concepts.
Specification Data & Fluid Capacities
The file meticulously catalogs critical factory tolerances, fluid capacities, and torque settings for standard and split flange bolts. Hydraulic tank capacities are strictly defined at 315 liters (PC300) and 358 liters (PC400). You will also find standard shoe specifications detailing link pitches of 203 mm or 216 mm. Working on high-pressure hydraulics and heavy track frames poses inherent physical risks; always consult established factory tolerances and properly secure the equipment before executing any repair procedure. This document acts as your definitive blueprint to verify every metric and approach the machine safely.
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