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The MCDA-SP500TM is a fully hydraulic self-propelled crack sealing machine designed for highways, airports, bridges and municipal road maintenance. Powered by a diesel engine with an efficient thermal oil heating system, it delivers stable material temperature, precise crack filling and reliable continuous operation.
Overview
The MCDA-SP500TM is a new-generation fully hydraulic crack sealing machine independently developed by MCDA for professional asphalt pavement maintenance.
Featuring self-propelled travel, diesel engine power, thermal oil indirect heating and hydraulic material delivery, the machine ensures stable temperature control and continuous crack sealing performance.
Suitable for:
• Highways
• Airports
• Bridges
• Municipal Roads
• Industrial Parks
Main Features
✔ Fully Hydraulic Drive
No chain transmission. Stable operation with lower maintenance requirements.
✔ Self-Propelled Travel System
Forward and reverse travel with adjustable speed, improving mobility on construction sites.
✔ Diesel Engine Powered
Reliable diesel engine provides stable hydraulic power and heating performance.
✔ Thermal Oil Indirect Heating
Uniform heating prevents asphalt aging and burning.
✔ Intelligent Temperature Control
Independent controllers monitor:
• Thermal oil temperature
• Sealant temperature
• Electric hose temperature
Maintaining stable operating conditions.
✔ Electrically Heated Hose
Keeps sealant flowing smoothly while reducing hose blockage.
✔ High-Efficiency Material Pump
Hydraulic pump provides continuous sealant output with adjustable flow rate.
✔ Easy Operation
Integrated control panel allows one operator to complete crack sealing efficiently.
⑤ Technical Specifications
| Item | Specification |
|---|---|
| Model | MCDA-SP500TM |
| Drive System | Fully Hydraulic |
| Travel Mode | Self-Propelled |
| Power Source | Diesel Engine |
| Heating System | Thermal Oil Indirect Heating |
| Heating Fuel | Diesel |
| Hydraulic Oil | ISO VG46 Anti-Wear Hydraulic Oil |
| Thermal Oil | L-QC350 Heat Transfer Oil |
| System Pressure | 3–5 MPa |
| Thermal Oil Temperature | 240–260°C |
| Sealant Temperature | 180–195°C |
| Electric Hose Temperature | 180°C |
⑥ Applications
Suitable for
• Highway crack sealing
• Airport runway maintenance
• Bridge deck maintenance
• Municipal roads
• Industrial parks
• Parking lots
⑦ Operation Guide
Operating Procedure
Step 1
Inspect hydraulic oil, diesel fuel, thermal oil and all hoses before starting.
Step 2
Start the diesel engine and switch on the control system.
Step 3
Activate the burner and electric hose heater until the sealant reaches the preset temperature.
Step 4
Start the agitator and air compressor to ensure smooth material flow.
Step 5
Adjust the flow rate according to crack width and begin sealing.
Step 6
After work, purge the hose with compressed air and return remaining sealant to the tank before shutting down.
⑧ Maintenance
Daily Maintenance
• Clean residual sealant from the machine.
• Check for hydraulic or fuel leaks.
• Lubricate moving joints.
• Inspect the burner.
Weekly Maintenance
• Clean burner filter.
• Remove carbon deposits from ignition electrodes.
• Tighten hydraulic pump and motor bolts.
Periodic Maintenance
Every 200 Hours
• Replace hydraulic return filter.
• Inspect thermal oil level.
• Lubricate bearings and chains.
Every 500 Hours
• Replace hydraulic oil.
• Clean hydraulic tank.
⑨ Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Machine will not move | Low hydraulic pressure | Check hydraulic oil and pressure |
| No sealant output | Sealant temperature too low | Increase heating temperature |
| Hose blockage | Material cooled inside hose | Heat hose and purge |
| Burner won’t ignite | Fuel blockage | Clean filter and fuel line |
| Hydraulic oil leakage | Damaged hose | Replace hydraulic hose |
| Engine hard to start | Dirty air filter | Clean or replace filter |
⑩ Safety Instructions
Safety Precautions
• Do not touch heated components during operation.
• Release hydraulic pressure before maintenance.
• Wear reflective clothing during road construction.
• Keep away from flammable materials.
• Never transport personnel on the machine.
• Operate only in well-ventilated areas.
⑪ Spare Parts
Recommended Spare Parts
• Hydraulic filter
• Diesel filter
• Hydraulic hose
• Heated hose
• Sealant nozzle
• Hydraulic oil seals
• Temperature sensor
• Drive belt
• Travel tires
⑫ Downloads
Downloads
• Product Brochure (PDF)
• Operation Manual
• Hydraulic Circuit Diagram (PDF)
• Electrical Wiring Diagram (PDF)
• Spare Parts List (PDF)
