Case Cx45b Cx50b Series 2 Cx55b Mini Excavator Service Repair Manual
Comprehensive Service and Repair Manual for Case CX45B, CX50B Series 2, and CX55B Mini Hydraulic Excavators.
- Case CX55B Tier 4 Mini Crawler Excavator Parts Manual
- Case CX55B Compact Hydraulic Excavator Operators Manual
The Case CX45B, CX50B Series 2, and CX55B mini hydraulic excavators are engineered for exceptional performance in diverse construction and excavation tasks. To maintain their efficiency and extend operational lifespan, adhering to a rigorous maintenance and repair regimen is essential. This manual offers an exhaustive guide to servicing and repairing these models, encompassing detailed procedures, specifications, and system overviews.
Table of Contents
- Model Specifications and Identification
- Engine Systems
- Hydraulic Systems
- Electrical Systems
- Undercarriage and Track Systems
- Cab and Operator Controls
- Routine Maintenance Schedule
- Troubleshooting Guide
- Special Tools and Equipment
Model Specifications and Identification
Understanding the specific features and capabilities of each model is crucial for effective maintenance and repair.
Case CX45B
- Operating Weight: Approximately 10,000 lbs
- Engine Power: 40.2 horsepower
- Maximum Digging Depth: 11 feet 6 inches
- Bucket Capacity: 0.14 to 0.18 cubic yards
Case CX50B Series 2
- Operating Weight: Approximately 10,800 lbs
- Engine Power: 41.8 horsepower
- Maximum Digging Depth: 12 feet 10 inches
- Bucket Capacity: 0.14 to 0.24 cubic yards
Case CX55B
- Operating Weight: Approximately 11,900 lbs
- Engine Power: 47.6 horsepower
- Maximum Digging Depth: 12 feet 10 inches
- Bucket Capacity: 0.14 to 0.24 cubic yards
Engine Systems
The heart of these excavators lies in their reliable and efficient engines.
Engine Specifications
- Model: Yanmar 4TNV88
- Type: 4-cylinder, 4-stroke, water-cooled diesel engine
- Displacement: 2.19 liters
- Fuel System: Direct injection
- Cooling System: Liquid-cooled with thermostat control
Maintenance Procedures
Regular engine maintenance ensures optimal performance and longevity.
- Daily Checks:
- Inspect engine oil levels; replenish as necessary.
- Examine coolant levels and top up if required.
- Assess for any visible leaks or damages.
- Every 250 Hours:
- Replace engine oil and oil filter.
- Clean or replace the air filter element.
- Inspect and adjust the fan belt tension.
- Every 500 Hours:
- Flush and replace engine coolant.
- Inspect and clean the fuel tank breather.
- Check and adjust valve clearances.
Hydraulic Systems
The hydraulic system is pivotal for the excavator’s operational efficiency.
System Components
- Hydraulic Pump: Variable displacement axial piston pump
- Control Valves: Multiple spool valves for precise movement control
- Hydraulic Cylinders: High-strength cylinders for boom, arm, and bucket operations
- Hydraulic Motors: Drive motors for track movement
Maintenance Procedures
- Daily Checks:
- Inspect hydraulic fluid levels; top up if necessary.
- Examine hoses and connections for leaks or wear.
- Every 500 Hours:
- Replace hydraulic fluid and filters.
- Clean the hydraulic tank breather.
- Inspect hydraulic cylinders for signs of wear or damage.
- Every 1,000 Hours:
- Conduct a thorough inspection of the hydraulic pump and motors.
- Test system pressure and adjust as needed.
Electrical Systems
A well-maintained electrical system ensures reliable machine operation.
System Components
- Battery: 12-volt heavy-duty battery
- Alternator: 40-amp capacity
- Starter Motor: High-torque starter for efficient engine ignition
- Lighting: Work lights and indicators for safe operation
Maintenance Procedures
- Daily Checks:
- Ensure all lights and indicators are functioning correctly.
- Inspect battery terminals for corrosion; clean as necessary.
- Every 250 Hours:
- Check battery electrolyte levels; replenish with distilled water if needed.
- Inspect wiring harnesses for signs of wear or damage.
- Every 500 Hours:
- Test alternator output to ensure proper charging.
- Examine starter motor for signs of wear; replace if necessary.