valve-body bores Archives - Transmission Digest
Valve-Body Bore Preparation

We’ve all been there. You get your bench set up to clean and inspect the valve body, pull the first retaining clip – and then it happens. The first bore you touch ends up having either a stuck end plug, valve, sleeve or – worse yet – all the above. Fast-forward a few steps and, what the heck, how did that O-ring get torn? Why do I always end up with sticking valves on the way back together?

The thing to keep in mind is that most valve bodies use aluminum castings that can dent, scratch and develop ridges very easily. Once this occurs, it can quickly lead to damaged components and lost time trying to repair them. The best place to start in avoiding this scenario is to understand why it happens.

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