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LK4948 S3 Compressor Unloader Kit for Air Brake Systems
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LK4948 S3 Unloader Kit for Air Brake Compressors

1400 070 300

Summary

Professional-grade compressor unloader kit designed for heavy commercial vehicle air brake compressors. This component ensures precise pressure regulation within the pneumatic system and is compatible with Knorr-Bremse systems. Equivalent to OE Knorr-Bremse LK4948S3.

Product identifiers
EAN Code8699031022277
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Compatible OEM Codes

  • SCANIA
    • 1767157 S3
  • KNORR-BREMSE
    • LK4948 S3

Description

What does an unloader kit do?

This compressor unloader kit plays a critical role in the air brake system by regulating the compressor's pressure output. By controlling the unloading process, it prevents over-pressurization and ensures the pneumatic system maintains stable operating levels for heavy commercial vehicles.

System compatibility

The kit is engineered to maintain high performance under demanding service conditions. It is specifically compatible with Knorr-Bremse systems, ensuring seamless integration and reliable operation within the air brake assembly of trucks and buses.

Maintenance and installation

To ensure proper function, technicians should inspect the unloader mechanism during routine air system maintenance. Regular checks of the compressor assembly can prevent pressure fluctuations and ensure long-term reliability of the entire braking circuit.

Troubleshooting guidance

Consult your authorized distributor to verify fitment for your specific air brake compressor configuration.

OE cross-reference

1400 070 300 (Compressor Unloader Kit) is the equivalent of the Knorr-Bremse OE number. This part directly replaces Knorr-Bremse OE number LK4948S3.

Other OEMs

KNORR-BREMSE

  • LK4948 S3

SCANIA

  • 1767157 S3

Compatible Vehicles

Compatible Vehicles
BrandModelModel TypeEngine
KNORR-BREMSE
SCANIA

FAQ

What is the function of a compressor unloader kit?
The unloader kit manages the air pressure regulation within the compressor, preventing excessive pressure buildup in the pneumatic braking system.
Which systems is this unloader kit compatible with?
This specific kit is designed to be compatible with Knorr-Bremse systems used in heavy commercial vehicle air brake compressors.
What are the signs of an unloader kit failure?
Symptoms may include continuous compressor running, inability to reach target pressure, or irregular pressure fluctuations in the braking circuit.
How should I select the correct repair kit?
Technicians should verify compatibility with existing Knorr-Bremse system components to ensure correct fitment and pressure regulation performance.
What are the OE reference numbers of this part?
1400 070 300 directly replaces Knorr-Bremse OE number LK4948S3.