61260050073 / 0025 / VG1560040031 / 0032: Complete Valve Kit for SINOTRUK Howo Performance

Core Function: The Heart of System Control

The Valve Kit encompassing parts **61260050073, 0025, VG1560040031, and 0032** is designed for the critical repair of control valves in your SINOTRUK Howo’s air brake or hydraulic systems. These valves are the intelligent “switches” and “regulators” of your chassis. They perform essential functions such as **regulating air pressure** from the compressor to various circuits, **controlling the application and release** of the service and parking brakes, managing ride height in air suspension systems, and operating auxiliary pneumatic devices. Over time, the internal seals, O-rings, diaphragms, and springs within these valves degrade due to constant pressure cycling, temperature extremes, and moisture.

A genuine repair kit like the one referenced by **VG1560040031 / 0032** and associated numbers provides a complete set of internal renewal parts. Instead of replacing the entire, often expensive, valve assembly, this kit allows for a cost-effective and thorough overhaul. It typically includes all the soft components—such as nitrile or polyurethane diaphragms, various-sized O-rings, gaskets, and sometimes springs and pistons—that are responsible for creating airtight seals and precise movement. By replacing only the worn internals, you restore the valve body—a durable metal casting—to its original performance specification, ensuring **accurate pressure control, rapid response times, and leak-free operation**.

The importance of these valves cannot be overstated. A failure in a relay valve can lead to slow brake application or release, compromising safety. A malfunctioning pressure regulating valve can cause system-wide over- or under-pressure, affecting everything from brake feel to air accessory operation. Using the correct, genuine kit—**61260050073 / 0025 / VG1560040031 / 0032**—guarantees that the replacement components match the exact material specifications and dimensions of the original, ensuring a perfect seal and restoring the valve’s designed hydraulic or pneumatic logic.

Key Advantages of the Genuine Valve Repair Kit

Technical Specifications: Valve Repair Kit

Symptoms of Valve Failure and Overhaul Procedure

Recognizing a failing control valve is key to maintaining system integrity. Common symptoms include **audible air leaks** (hissing) from the valve body itself, **slow or delayed brake application/release**, or brakes that do not fully release (dragging). You may notice the air compressor **cycling more frequently** than normal to maintain system pressure due to a leak. Inconsistent braking force between axles or a **spongy brake pedal feel** can also indicate valve issues. For leveling valves in air suspension, symptoms include the truck **leaning to one side** or failing to maintain ride height.

Overhauling a valve with kit **61260050073 / 0025** requires methodical work. **Safety First:** Chock the wheels, drain all air pressure from the system reservoirs, and disconnect batteries if electrical connections are present. Carefully clean the exterior of the valve before removal. Disconnect all air lines, labeling them for correct reassembly, and unbolt the valve. On a clean workbench, disassemble the valve according to a service manual, taking note of the order and orientation of all components. Lay out the old parts and systematically replace each seal, O-ring, and diaphragm with the new ones from the **VG1560040031 / 0032** kit. Apply a light coat of silicone grease to seals if recommended.

Reassembly is the reverse of disassembly, ensuring all parts are seated correctly. Torque any bolts to specification. Reinstall the valve on the vehicle, reconnect all lines, and restore air pressure. Conduct a thorough **leak-down test** by applying soapy water to all valve fittings and seams while the system is pressurized. Bubbles will indicate a leak. Finally, test the system function: apply and release brakes repeatedly, check for proper air suspension operation, and listen for abnormal hissing. A successful overhaul with the genuine kit will restore quiet, efficient, and reliable operation.

**Important Consideration:** Valve overhaul requires a good understanding of pneumatic/hydraulic systems and meticulous cleanliness. If you are not confident, this job is best left to a qualified heavy-duty mechanic. Always use the genuine **61260050073 / 0025 / VG1560040031 / 0032** kit specified for your exact valve model. Using incorrect or inferior seals can lead to rapid failure and safety risks. Keeping a service manual for your specific SINOTRUK Howo model is invaluable for this and all repair tasks.

Conclusion: Invest in Precision, Ensure Control

The Valve Repair Kit, referenced under numbers **61260050073, 0025, VG1560040031, and 0032**, represents the smart, professional approach to maintaining the critical control systems of your SINOTRUK Howo. It empowers you to restore vital valves to like-new condition, ensuring the precision and reliability that heavy-duty operations demand.

Do not compromise the safety and performance of your braking or control systems with incomplete or non-genuine seal kits. Opting for the correct, authentic overhaul kit guarantees material compatibility, perfect fitment, and lasting performance. It is a strategic investment in vehicle safety, operational uptime, and long-term cost savings. Trust in genuine SINOTRUK parts to maintain absolute control, mile after mile.