Hydromax System Relay | Power Assist Restoration
Safety-Critical Component
Bexar Pro Components Solution
Bexar Pro Components: Ensuring Uninterrupted Power Assist for Heavy-Duty Systems.
Ensure optimal braking performance with this brand-new replacement relay from Bexar Pro Components, specifically engineered for Hydro-Max hydraulic brake booster systems. A faulty relay is a common point of failure that can lead to an intermittent or complete loss of power assist.Built for heavy-duty fleet reliability, this component is vital for the safe operation of medium-duty truck fleets and heavy industrial machinery. It acts as the primary switch to engage the backup motor, providing critical fail-safe security during emergency braking scenarios.
Technical Specifications
| Feature | Detail | Application Note |
|---|---|---|
| Compatibility | Hydro-Max Systems | Compatible with Bendix and Bosch booster electrical circuits. |
| Primary Function | Power Assist Restore | Engages the backup DC motor during primary assist failure. |
| Construction | Industrial Grade | High-durability internal contacts for heavy-duty cycling. |
| Installation | Direct Fit | Replacement process designed for automotive and industrial chassis. |
⚠ Expert Installation & Field Note
Based on our shop experience specializing in heavy-duty brakes since 1985:
Do not ignore signs of relay failure. Intermittent power assist is a precursor to total system failure.
- Test Engagement: Check this relay if the backup motor fails to engage during a manual test or whenever the engine is off and the brake is applied.
- Wiring Integrity: Inspect the relay socket and harness for signs of heat or melting; high-current backup motors can stress compromised electrical connections.
- System Verification: Always perform a full system function test including the flow switch activation after installing this component.
System Technical Data
Review full electrical schematics and diagnostic procedures for the Hydro-Max relay circuit in the official technical manual.







