20547525 Volvo NH12 D12C Twin Cylinder Compressor

What does a twin cylinder compressor do?

This twin cylinder compressor is a critical component of the pneumatic air brake system, engineered to provide consistent air pressure for heavy commercial vehicle braking. The unit utilizes water cooling to manage operating temperatures efficiently during high-duty cycles, ensuring long-term reliability in demanding environments.

Vehicle and engine compatibility

This specific model is compatible with Volvo NH12 trucks, specifically covering variants such as the NH 12/340, NH 12/380, NH 12/420, and NH 12/460 equipped with D12C engines. It is designed to meet the rigorous requirements of these heavy commercial vehicle applications.

Technical specifications and installation

Technicians should note the technical specifications: it features an Ø85.00 bore, a 62 mm stroke, and an M26x1.5 air outlet port. The unit includes a water-cooled valve plate and an ESS feature to optimize performance. When installing, ensure all M16x1.5 water ports are properly sealed to prevent leaks.

Maintenance and troubleshooting

Regular inspection of the air inlet port and unloader port is recommended to prevent contamination within the pneumatic circuit. Maintaining proper coolant flow through the water inlet and outlet ports is essential for preventing overheating in this twin cylinder assembly.

OE cross-reference

1300 010 001 (Twin Cylinder Compressor) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 20547525.