Spring Packs & Assemblies - P.J. Wallbank Springs, Inc.

Our Products – Spring Packs

Spring packs are used in a variety of clutched applications, although their most common use is within the clutches of automatic transmission. Clutches are engaged in order for a particular part of a machine to perform work. In the case of automatic transmissions, different clutches are engaged in order to optimize engine performance. The purpose of a spring pack is to return the piston to its “home position” during clutch disengagement. They also perform a secondary function by ensuring the piston does not apply the clutch plates through centrifugal force in rotating clutches.

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  • disengaged clutch return spring diagram

    Clutch Plates Disengaged

  • engaged clutch return spring diagram

    Clutch Plates Engaged

Learn More About Our Spring Packs!