Case CK25 CK28 Excavator Service Repair Manual
For operators and technicians working with Case CK25 and CK28 crawler excavators, having access to a detailed and reliable service repair manual is indispensable. This guide outlines critical information, maintenance procedures, and troubleshooting steps to maximize efficiency and extend the lifespan of your equipment.
Introduction to the Case CK25 and CK28 Crawler Excavators
The Case CK25 and CK28 crawler excavators are engineered for heavy-duty construction, excavation, and landscaping projects. Known for their durability, reliability, and performance, these machines are equipped with advanced hydraulics, robust engines, and operator-friendly controls. Regular maintenance and proper repair practices are essential to ensure their optimal operation.
Key Features and Specifications
Engine and Performance
- Engine Model: Equipped with high-efficiency diesel engines.
- Horsepower: Designed to provide sufficient power for demanding operations.
- Fuel Efficiency: Optimized fuel injection systems for reduced consumption.
Hydraulics System
- Hydraulic Flow: Advanced hydraulic circuits ensure smooth and precise operation.
- Control Valves: Responsive and easy-to-maintain control valves.
Dimensions and Capacities
- Operating Weight: CK25: ~5,000 kg, CK28: ~6,000 kg.
- Bucket Capacity: Ranges from 0.2 to 0.4 cubic meters, depending on configuration.
Case CK25 CK28 Excavator Service Repair Manual
Routine Maintenance Schedule
Proper maintenance extends the life of your excavator and ensures safety on-site. Below is a recommended maintenance schedule:
| Interval | Maintenance Task | Notes |
|---|---|---|
| Daily | Check fluid levels (engine oil, hydraulic fluid, coolant) | Top-up if necessary. |
| 50 Hours | Inspect belts and hoses | Replace if worn or damaged. |
| 250 Hours | Replace engine oil and filter | Use manufacturer-approved products. |
| 500 Hours | Check and clean air filter | Replace if excessively dirty. |
| 1,000 Hours | Inspect undercarriage components | Tighten or replace parts as needed. |
| 2,000 Hours | Complete hydraulic system service | Flush and refill hydraulic fluid. |
Common Issues and Troubleshooting
Engine Overheating
- Cause: Blocked radiator or low coolant levels.
- Solution: Inspect and clean the radiator; refill coolant to the recommended level.
Hydraulic System Failures
- Cause: Contaminated hydraulic fluid or worn-out components.
- Solution: Replace fluid and inspect hoses and seals for leaks.
Excessive Track Wear
- Cause: Operating in harsh environments without proper cleaning.
- Solution: Clean tracks daily and inspect for alignment issues.
Slow Operational Speeds
- Cause: Clogged filters or insufficient hydraulic pressure.
- Solution: Replace hydraulic filters and check system pressure.
Disassembly and Assembly Procedures
Performing major repairs on the CK25 and CK28 requires precision and adherence to manufacturer guidelines. Below are critical disassembly and assembly steps for key components:
Hydraulic Cylinder
- Disassembly:
- Depressurize the hydraulic system.
- Remove the cylinder from the machine.
- Detach the rod and seals using appropriate tools.
- Inspection:
- Check for scratches or damage to the cylinder body and rod.
- Replace worn seals or damaged rods.
- Assembly:
- Reinstall seals and rods carefully.
- Mount the cylinder and reconnect to the hydraulic system.
Track Tensioning System
- Inspection:
- Verify tension using a gauge.
- Inspect idler and rollers for wear.
- Adjustment:
- Use the grease fitting to adjust tension as per specifications.
Electrical System Overview
The Case CK25 and CK28 feature robust electrical systems critical for smooth operation. Key components include:
- Battery: Ensure it is charged and connections are clean.
- Fuses and Relays: Inspect for blown fuses or malfunctioning relays.
- Wiring Harness: Regularly inspect for signs of wear or damage.
Safety Guidelines
Operating and servicing the CK25 and CK28 excavators must be done with safety in mind. Always:
- Wear appropriate personal protective equipment (PPE).
- Use the correct tools for repairs and maintenance.
- Depressurize hydraulic systems before servicing.
- Lock out power sources before disassembly.
Conclusion
Maintaining the Case CK25 and CK28 crawler excavators involves regular inspection, proper servicing, and timely repairs. By following the recommendations in this service repair manual, operators can ensure peak performance and extend the equipment’s lifespan. Always refer to manufacturer-approved manuals for detailed procedures and specifications.
For additional resources, explore our comprehensive database of service manuals tailored to heavy machinery and excavator models.