20701801 Volvo VHD D12 Twin Cylinder Compressor

What does a twin cylinder compressor do?

This twin cylinder compressor serves as a vital component within the pneumatic braking system of heavy commercial vehicles. Engineered to withstand rigorous duty cycles, it utilizes a water-cooled design to manage thermal loads effectively during continuous operation. The unit features a high-strength construction to maintain consistent air pressure delivery for the vehicle's braking and pneumatic systems.

Compatible vehicles and engines

This specific model is designed for compatibility with Volvo VHD trucks equipped with D12 engines. It functions as an OE-equivalent solution for maintaining optimal air system pressure in heavy-duty applications. The assembly includes integrated features such as an ESS system and a water-cooled valve plate to ensure long-term reliability under high-pressure conditions.

Installation and maintenance

For professional installation, technicians should verify the connection to the water cooling circuit via the M16x1,5 inlet and outlet ports. The air outlet utilizes an M26x1,5 thread, while the air unloader port is sized at M12x1. Ensuring correct torque on all connections is essential for preventing leaks in the pneumatic circuit.

Troubleshooting and selection

Regular inspection of the water cooling lines and air inlet ports (Ø35) is recommended to prevent system contamination or overheating. Maintaining clean cooling fluid and checking the integrity of the valve plate can extend the service life of this critical compressor component.

OE cross-reference

1300 010 001 (Twin Cylinder Compressor) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 20701801.