Description
Caterpillar 320D, 321D, 323D, 324D, 325D & 330D Hydraulic System Schematic PDF
This OEM Caterpillar hydraulic schematic provides technicians with detailed hydraulic circuit information for diagnosing and understanding the hydraulic systems used on multiple D-Series excavators.
The factory schematic includes complete color-coded hydraulic circuit layouts, hydraulic symbol references, pressure tap locations, quick coupler circuits, and main control valve information.
Models Covered
- Caterpillar 320D
- Caterpillar 321D
- Caterpillar 323D
- Caterpillar 324D
- Caterpillar 325D
- Caterpillar 330D
Manual Details
| Included Items | Complete Hydraulic System Schematic for Caterpillar 320D, 321D, 323D, 324D, 325D & 330D Excavators |
| File Format | PDF – Instant Download |
| Language | English |
| Pages | 2 Pages |
| File Size | 4 MB |
| Models Covered | 320D, 321D, 323D, 324D, 325D & 330D Excavators |
| Document Type | OEM Hydraulic System Schematic |
| Printable | Yes |
| Searchable | Yes |
| Delivery Method | Instant PDF Download |
| Manufacturer | Caterpillar Inc. |
Hydraulic Schematic Coverage Includes:
- Main Hydraulic Pump Circuits
- Main Control Valve Layout
- Quick Coupler Hydraulic Circuit
- Hydraulic Symbols Reference Table
- Electrical Symbols Table
- Main Pump and Filter Circuits
- Pressure Tap Locations
- Sensor Locations
- Sampling Port Identification
- Swing Motor Circuits
- Travel Motor Circuits
- Boom Cylinder Circuits
- Stick Cylinder Circuits
- Bucket Cylinder Circuits
- Heavy Lift Control Circuit
- Pilot Hydraulic System
- Hydraulic Oil Tank Layout
- Machine Component Locations
The attached OEM schematic also includes detailed pressure tap references and quick coupler component locations for efficient troubleshooting and hydraulic testing.
This hydraulic diagram is ideal for technicians, diagnostic specialists, and equipment owners requiring accurate factory hydraulic information.
Only logged in customers who have purchased this product may leave a review.
🔒 Save Money with Membership
💎 Membership Plans
Purchase this manual individually, or unlock access to thousands of manuals with a Repair-Manuals.com Membership.
| Plan | Duration | Price | Buy Now |
|---|
| ⚡ Day Pass | 24 Hours | $36.99 | Buy Now |
| 🚀 Starter Access | 7 Days | $66.99 | Buy Now |
💎 Pro Access
BEST VALUE | 30 Days | $96.99 | Buy Now |
| 👑 Workshop Access | 180 Days | $199.99 | Buy Now |
| 🏆 Workshop Pro Access | 365 DAYS | $499.99 | Buy Now |
💡 Membership Benefits
- Unlimited access during your membership period
- Thousands of Workshop Manuals, Service Manuals & Parts Catalogs
- Wiring Diagrams & Technical Documentation
- Instant PDF Downloads
- New manuals added regularly
Legal Notice
Repair-Manuals.com is an independent provider of technical documentation and repair manual resources.
All product names, manufacturer names, model designations, trademarks, service marks, logos, and registered trademarks are the property of their respective owners.
References to manufacturer names, equipment models, engine models, transmission models, and part numbers are used solely for identification, compatibility, and informational purposes to help customers locate the appropriate technical documentation.
Repair-Manuals.com is not affiliated with, sponsored by, endorsed by, or authorized by any manufacturer unless expressly stated.
Intellectual Property
Repair-Manuals.com respects the intellectual property rights of manufacturers, publishers, and copyright owners.
If you are the copyright owner, trademark owner, or an authorized representative and believe that any content on this website infringes your intellectual property rights, please contact us with sufficient information to identify the material in question.
Upon receipt of a valid request, we will promptly review the matter and, where appropriate, remove or update the content in accordance with applicable laws and our intellectual property policy.
For legal or intellectual property inquiries, please contact our legal team via our Contact page or by email.
Steven Elli –
The color-coded hydraulic circuits made troubleshooting much easier. Highly recommended
Mustafa Koc –
Clear diagrams, instant download
Electric Reach –
Exactly what our technicians needed for hydraulic diagnostics
James Allmaras –
Highly recommended for D9T owners