AirCraft Air Impact Wrench Service Kit – Reverse Valve (35–36 / 38–39) for AT0004 (AT0004-SK07)
At a Glance: Reverse valve service kit for the AirCraft AT0004 with springs and detent components to keep the forward/reverse selector crisp and leak-free.
The reverse valve is what lets your impact wrench swap direction—forward to tighten, reverse to loosen—by rerouting airflow inside the motor. When the reverse valve components wear, the tool can feel vague when switching direction, slip out of position, or leak air around the selector. The AirCraft AT0004-SK07 reverse valve service kit replaces the key reverse valve parts (reference 35–36 and 38–39), including the spring and detent components that give the selector its positive “click” and stable positioning. It’s a small kit that makes a big difference to control and reliability.
Springs and detents keep the selector firmly seated in each direction. Renewing these parts helps prevent accidental direction changes, improves feel, and supports proper airflow routing—especially important when working at high torque.
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