shift valves Archives - Transmission Digest
Hydraulics Fundamentals: Shift & Relay Valves

Shift valves and relay valves share a lot of the same duties. This article is one of a series by Sonnax exploring how valves and hydraulic circuits work and what results when they quit functioning correctly.

A View into the Honda Five-Speed’s Shifting

If you’ve ever tried reading the explanation given by Honda in its hydraulic charts on how the transmission shifts, then you know how it can be confusing and hard to visualize, to say the least. The intent of this article is to make it easier to understand, using capture snapshots of the actual shifts using pressure transducers. We hope this makes it easier to visualize, for as they say, “A picture is worth a thousand words.”