502656508 Liebherr Compatible Air Dryer Valve
301.02.0039
Summary
This high-strength air dryer valve is designed for Liebherr heavy commercial vehicles. It features a 24 V heater, M22x1,5 and M12x1,5 port configurations, and operates at a pressure of 8,1 BAR to ensure reliable pneumatic system performance. Equivalent to OE Liebherr 502656508.
| EAN Code | 8699031075327 |
|---|
Ready to Order
Compatible OEM Codes
-
MAN
- 99.10036-0471
- 88.52102-6001
- 81.52102-6048
- 81.52102-6029
- 81.52102-6027
- 81.52102-6023
- 81.52101-6029
-
NEOPLAN
- 1102734544140
- 110273400
- 11017447
-
IRISBUS
- 980829
- 500004419
-
WABCO
- 432 410 102 0
-
SCANIA
- 1932680
-
NISSAN UD TRUCK
- 47540D6400
-
MERCEDES BENZ
- 29AD002
-
LIEBHERR
- 502656508
-
KÖGEL
- 322795
-
DAF
- 1505967
Description
What does an air dryer valve do?
This air dryer valve plays a critical role in the pneumatic brake system by managing air quality and moisture levels. By regulating airflow and removing contaminants, it protects sensitive braking components from corrosion and potential freeze-up during operation. Utilizing high-strength components ensures long-term reliability in demanding heavy commercial vehicle environments.Vehicle and system compatibility
This part is specifically compatible with Liebherr vehicles and systems. It is engineered to meet strict performance standards, ensuring seamless integration within the vehicle's air management architecture. Check the compatibility list for specific fitment details.Installation and maintenance
For proper installation, technicians should verify the 24 V heater connection and ensure all ports—including the M22x1,5 and M12x1,5 connections—are correctly torqued. Maintaining the specified 8,1 BAR pressure is essential for optimal valve function and system protection.Troubleshooting guidance
Regular inspection of the air dryer assembly helps prevent moisture buildup in the lines. If the system experiences pressure fluctuations or moisture carryover, inspecting this valve is a recommended first step in troubleshooting.OE cross-reference
301.02.0039 (Air Dryer Valve Air Dryer Valves) is the equivalent of the Liebherr OE number. This part directly replaces Liebherr OE number 502656508.Technical Specifications
| Heater | 24 V |
|---|---|
| Port 1 | M22x1,5 |
| Port 21 | M22x1,5 |
| Pressure | 8,1 BAR |
| Port 22 | M12x1,5 |
| Port 4/23 | - |
Other OEMs
DAF
- 1505967
IRISBUS
- 980829
- 500004419
KÖGEL
- 322795
LIEBHERR
- 502656508
MAN
- 99100360471
- 88521026001
- 81521026048
- 81521026029
- 81521026027
- 81521026023
- 81521016029
- 99.10036-0471
- 88.52102-6001
- 81.52102-6048
- 81.52102-6029
- 81.52102-6027
- 81.52102-6023
- 81.52101-6029
MERCEDES BENZ
- A00029AD002
- 29AD002
NEOPLAN
- 1102734544140
- 110273400
- 11017447
NISSAN UD TRUCK
- 47540D6400
SCANIA
- 1932680
WABCO
- 4324101020
- 432.410.102.0
- 432 410 102 0
Related Products
Repair Kits
Compatible Vehicles
| Brand | Model | Model Type | Engine |
|---|---|---|---|
| DAF | |||
| IRISBUS | |||
| KÖGEL | |||
| LIEBHERR | |||
| MAN | |||
| MERCEDES BENZ | |||
| NEOPLAN | |||
| NISSAN UD TRUCK | |||
| SCANIA | |||
| WABCO |
FAQ
What is the function of this air dryer valve?
The valve manages air quality by removing moisture and contaminants from the pneumatic system to prevent corrosion and freezing.
Is this component compatible with Liebherr systems?
Yes, this air dryer valve is designed to be compatible with Liebherr heavy commercial vehicle systems.
What technical specifications are important for installation?
Key specifications include a 24 V heater requirement and specific port sizes of M22x1,5 and M12x1,5.
How can I tell if the air dryer valve needs replacement?
Technicians should look for signs of moisture in the lines or pressure irregularities within the braking system.
What are the OE reference numbers of this part?
301.02.0039 directly replaces Liebherr OE number 502656508.