303.06.0170.02 ALB Load Sensing Valve Seal Kit
303.06.0170.02
Summary
This ALB Load Sensing Valve repair kit includes a diaphragm, piston, O-ring and seal set, spring assembly, and control pin. Designed for heavy commercial vehicle brake systems to ensure proportional pressure regulation according to axle load. Compatible with WABCO and Knorr-Bremse systems.
| EAN Code | 8683457078987 |
|---|
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Description
What does an ALB valve repair kit do?
This repair kit is designed to overhaul the automatic load sensing (ALB) valve, which regulates brake force in the pneumatic braking system of heavy commercial vehicles based on axle load. By replacing the internal wearing elements, this kit helps restore the valve's ability to graduate air pressure sent to the brake chambers according to mechanical or pneumatic signals from the suspension.Compatible vehicles and systems
The kit is compatible with WABCO and Knorr-Bremse systems and is used in heavy trucks from Mercedes-Benz, MAN, Scania, Volvo, DAF, Iveco, and Renault Trucks. These high-strength components ensure that braking force remains proportional to the load, whether the vehicle is empty or fully loaded.Installation and maintenance
For optimal performance, technicians should inspect the diaphragm, piston, O-ring set, and spring assembly during routine maintenance. Replacing these specific internal parts is a highly efficient way to maintain braking stability and prevent wheel lock-up or sway without replacing the entire valve assembly. Check the compatibility list.Troubleshooting and performance
Proper installation of the seal set and control pin ensures that the valve maintains factory tolerances during heavy-duty operation.Related Products
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FAQ
What components are included in the repair kit?
The kit typically includes a diaphragm, piston, O-ring and seal set, spring assembly, and a control pin to restore internal valve functionality.
Which systems are these parts compatible with?
These components are designed to be compatible with WABCO and Knorr-Bremse type ALB load sensing valves used in heavy commercial vehicles.
When should an ALB valve be repaired?
If the sealing capability degrades or braking force becomes inconsistent relative to axle load, renewing internal parts is often more economical than replacing the whole valve.
How does an ALB valve function in a truck?
The valve reads compression from the axle suspension to regulate air pressure sent to the rear-axle brake chambers, ensuring proportional braking force.