249776N
Plunger
Bendix

Plunger component used inside valve bodies and actuator assemblies to provide a return or alignment function. The part is selected for its straightforward actuation interface and dependable seating against sealing surfaces. VMRS 013-010-228 classifies it within the actuation and control family used on braking systems and auxiliary modules. The 42848 category suggests usage in tractors and trailers that require precise mechanical interfaces for set points and resets. Typical roles include resetting actuators, providing return force, or stabilizing linkage positions during adjustments. The design emphasizes clean tolerances to avoid sticking and wear, with materials chosen for resistance to moisture and dirt. When performing replacements, confirm the length, diameter and seating surface to ensure proper fit within the housing. Correct installation and alignment preserve accurate actuation and predictable system behavior in demanding service conditions.