Technical view of the Hydromax System Relay showing the schematic diagram and pin identification.

Side view of the Hydromax Relay showing the durable housing and mounting bracket.

Close-up of the electrical terminals on the Hydromax System Relay for power assist restoration.

Hydromax System Relay | Power Assist Restoration Component

Name: Hydromax System Relay | Power Assist Restoration Component
Brand: Bexar Pro Componets
SKU: 277277722
Availability: InStock

$33.27

Fitment Lookup:

Select your vehicle to verify compatibility before ordering.

SKU: 277277722 Categories: Hydromax Brake Boosters, VIEW ALL PRODUCTS Tag: 2772114 booster relay Brand: Bexar Pro Componets

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.