The Wabco air brake chamber assembly, part number 9253920030 or 925-392-003-0, is a Type 30/30 cam-operated unit built to OE specification. It delivers a push-rod length of 3.55 in and a stroke of 2.99 in, with a maximum operating pressure of 145.0 psi and a release pressure of 66.72 psi. Mounting hardware uses 5/8"-11 UNC bolt threads with a bolt length of 1.50 in and a center-to-center bolt spacing of 4.75 in. Two 3/8"-18 NPTF ports are angled at 135 degrees for plumbing flexibility. The clevis pin diameter is 0.51 in. The unit is supplied without boot and is rated for a temperature range of -40°C to +80°C, with a total length of 14.29 in. A genuine Wabco part sold by Pro Gear and Transmission. Call us to confirm proper fit for your application.
Features
Type 30/30 cam-operated air brake chamber, OE specification
Stroke: 2.99 in | Push-rod length: 3.55 in | Total length: 14.29 in
Max. operating pressure: 145.0 psi | Release pressure: 66.72 psi
Bolt threads: 5/8"-11 UNC | Bolt length: 1.50 in | Bolt spacing: 4.75 in
Two 3/8"-18 NPTF ports at 135-degree angle | Clevis pin: 0.51 in
Temperature range: -40°C to +80°C | Supplied without boot
Tech Specs
- Brand: Wabco
- Type: 30/30
- Type of operation: Cam
- Technical specification: OE specification
- Version: Without boot
- Max. operating pressure: 145.0 psi
- Release pressure: 66.72 psi
- Stroke: 2.99 in
- Push-rod length: 3.55 in
- Total length: 14.29 in
- Clevis pin diameter: 0.51 in
- Bolt threads: 5/8"-11 UNC
- Bolt length: 1.50 in
- Distance between bolts: 4.75 in
- Port thread 1: 3/8"-18 NPTF
- Port thread 2: 3/8"-18 NPTF
- Port angle: 135°
- Temperature range: -40°C to +80°C
