Proportioning Combination Valve Depressor - Bleeding Tool - Kent-Moore

The Kent-Moore J-39177 Proportioning Combination Valve Depressor is an indispensable OEM service tool engineered for precise brake bleeding and comprehensive hydraulic system maintenance. This specialized depressor ensures proportioning and combination valves remain fully open, facilitating complete air removal and efficient fluid exchange across all brake circuits. It enables professional technicians to achieve a firm, reliable brake pedal feel by preventing air re-entry into the system after service.

Key Features

• Optimized Brake Bleeding: Holds proportioning and combination valves open to allow for thorough air purging and uniform fluid circulation, critical for effective brake system flushing and maintenance.
• Prevents Air Intrusion: By maintaining the correct valve position, this proportioning valve depressor significantly reduces the risk of air re-entering the hydraulic system, which can otherwise lead to a spongy brake pedal.
• Consistent Pedal Response: Promotes even fluid distribution throughout the brake system, directly supporting a more responsive and reliable brake pedal after any bleeding procedure.
• Professional-Grade Durability: Manufactured by Kent-Moore, this tool is built for the rigorous demands of dealership, fleet, and independent repair shop environments, ensuring long-term reliability.
• OEM-Specific Compatibility: Designed to meet factory brake service procedures and specifications, this OEM service tool supersedes Kent-Moore J-35856 and is equivalent to OTC 7853 and Miller 6670, ensuring precise fit and function.
• Compact and Lightweight Design: Weighing approximately 0.12 lb, its manageable size allows for precise placement and easy maneuvering in confined engine bays and around master cylinder assemblies.

Applications

The Kent-Moore J-39177 is crucial for bleeding or flushing brake systems on vehicles equipped with a proportioning or combination valve within their hydraulic circuit. This brake bleeding tool is particularly effective for servicing a wide range of General Motors utility vehicles, vans, and pickups featuring Kelsey Hayes anti-lock brake systems, including both Rear Wheel Anti-Lock (RWAL) and 4-Wheel Anti-Lock (4WAL) configurations. Common use cases include master cylinder replacement, caliper or wheel cylinder service, brake line replacement, and periodic fluid exchanges where valve restriction is a concern. For 4WAL systems, using two depressors is recommended to achieve optimal results.

Specifications

• Manufacturer: Kent-Moore
• Model: J-39177
• Product Type: Proportioning Combination Valve Depressor – Brake Bleeding Tool
• Weight: 0.12 lb