303.06.0109 Volvo ALB Load Sensing Valve Equivalent

What does an ALB Load Sensing Valve do?

This ALB load sensing valve plays a critical role in the pneumatic braking system by adjusting brake pressure based on the actual load of the vehicle. By utilizing a mechanical sensing mechanism, it ensures that braking force is proportional to the weight of the vehicle, preventing wheel lock-up under light loads and providing maximum stopping power when fully loaded.

Vehicle and engine compatibility

This component is specifically engineered for Volvo trucks, including models such as the F7, F10, F12, FL10, FL12, N10, N12, NL10, NL12, B10B, B10M, and B12 engines like TD70 and D12A. It is also compatible with Scania, DAF, and Alexander Dennis vehicles. This part is essential for maintaining safety in heavy commercial vehicle fleets.

Technical specifications and installation

Technicians should note the specific port dimensions: Port 1 is M22x1.5, while Port 2 features two M16x1.5 connections. The empty pressure port 41/42 operates at 2.75 BAR, and the full pressure port 41/42 reaches 6.8 BAR. When replacing this valve, ensure all connections are secure to maintain system integrity.

Maintenance and troubleshooting

Regular inspection of the load-sensing arm and valve body can prevent uneven braking performance or air leaks within the pneumatic circuit.

OE cross-reference

303.06.0109 (ALB Load Sensing Valve) is the equivalent of the Alexander Dennis, DAF, Scania, Volvo and WABCO OE numbers. This part directly replaces Alexander Dennis OE number AB4757110380. It also replaces DAF OE number 1517910, Scania OE number 1935086, Volvo OE number 3031393 and WABCO OE number 4757110380.