1. Introduction to Your Service Manual
This service manual is an essential resource for the proper repair and maintenance of Case 450C and 455C Crawler Dozers. It provides comprehensive, detailed instructions and procedures necessary for technicians and mechanics to perform service tasks effectively and safely. This manual covers all serial numbers for the specified models.
The manual is designed to assist in diagnosing, repairing, and maintaining the various systems and components of your Case Crawler Dozer, ensuring optimal performance and longevity. It is a printed document, sealed in shrinkwrap, guaranteeing its new condition upon receipt.

Image: Cover of the official Case 450C, 455C Crawler Dozer Service Manual, showing the title and brand logo.
2. Understanding Your Service Manual
This section outlines how to effectively use the service manual to locate the information you need. The manual is organized into various chapters, each dedicated to a specific system or component of the crawler dozer.
- Chapter Organization: Each chapter focuses on a specific area such as the engine, transmission, hydraulics, electrical system, or chassis.
- Detailed Procedures: Step-by-step instructions are provided for disassembly, inspection, repair, reassembly, and adjustment.
- Diagrams and Illustrations: Explanatory diagrams, exploded views, and photographs are included to clarify complex procedures and component locations.
- Informació de seguretat: Important safety warnings and precautions are highlighted throughout the manual to ensure safe working practices.
Always refer to the relevant chapter for the specific task you are performing. Pay close attention to all warnings and notes to prevent injury or damage to the equipment.
3. Operating the Service Manual
While this manual does not cover the operational procedures of the dozer itself, it guides you on how to operate the manual for service purposes. To effectively utilize this service manual:
- Identify the System: Determine which system or component requires service (e.g., engine, transmission, brakes).
- Locate the Relevant Chapter: Navigate to the chapter corresponding to the identified system.
- Review Precaucions de seguretat: Before beginning any work, read all safety warnings pertinent to the task.
- Segueix les instruccions pas a pas: Execute each step of the procedure carefully, referring to diagrams and specifications as needed.
- Utilitzeu les eines correctes: Ensure you have the appropriate tools and equipment for the job.
Proper use of this manual will ensure accurate and efficient service, minimizing downtime and maximizing the lifespan of your equipment.
4. Procediments de manteniment
This service manual provides detailed instructions for all routine and advanced maintenance tasks required for the Case 450C and 455C Crawler Dozers. Adhering to the recommended maintenance schedule is crucial for the machine's reliability and performance.
Key Maintenance Areas Covered:
- Sistema del motor: Oil changes, filter replacements, fuel system checks, cooling system maintenance.
- Sistema hidràulic: Fluid checks, filter replacements, hose and fitting inspections.
- Transmission and Drive Train: Fluid levels, filter changes, component inspections.
- Tren d'aterratge: Track tension adjustment, roller and idler inspection, track component wear assessment.
- Sistema elèctric: Battery maintenance, wiring inspections, fuse checks.
- Sistema de fre: Inspection and adjustment procedures.
Always use genuine Case parts or approved equivalents for all maintenance and repair work to ensure compatibility and performance.
5. Guia de resolució de problemes
The troubleshooting section of this manual is designed to help identify and resolve common issues that may arise with your Case 450C or 455C Crawler Dozer. It provides systematic diagnostic charts and procedures to pinpoint the root cause of problems.
Passos generals per a la resolució de problemes:
- Observe Symptoms: Note all symptoms, sounds, and operational anomalies.
- Consult Diagnostic Charts: Refer to the troubleshooting charts in the manual for the specific system exhibiting issues.
- Perform Checks: Follow the recommended checks and tests outlined in the manual.
- Aïlla el problema: Systematically eliminate potential causes until the source of the problem is identified.
- Implement Solution: Perform the necessary repair or adjustment as detailed in the relevant section of the manual.
For complex issues, it is recommended to consult with a certified Case service technician.
6. Especificacions
This section provides key technical specifications for the Case 450C and 455C Crawler Dozers, as referenced in this service manual. These specifications are crucial for proper maintenance and repair.
| Especificació | Detall |
|---|---|
| Marca | Cas |
| Model | 450C, 455C |
| Número de peça del fabricant | 8-41962 |
| Número de model de l'article | 8-41962 |
| Fabricant | CAS |
| ASIN | B0721VK424 |
| Característiques especials | Portable (referring to the manual itself) |
For detailed operational specifications of the dozer, please refer to the operator's manual or official Case documentation.
7. Garantia i Suport
This service manual itself is typically covered by the return policy of the retailer from which it was purchased. For information regarding the warranty of your Case 450C or 455C Crawler Dozer, please refer to the original purchase documentation provided with the equipment or contact an authorized Case dealer.
For technical support, parts inquiries, or professional service for your Case Crawler Dozer, please contact your local authorized Case dealer or visit the official Case Construction Equipment website. They can provide expert assistance and ensure your equipment receives the best possible care.





