As you can tell, had no reason to play with mine, but more O'rings? If so, either the plate or the timing chain cover has grooves in it, and helps to use RTV or non-hardening Permatex to help them strict in.
My Volvo boat outdrive used O'rings between all those assemblies, had water leaking into the gear water. Used a marine grade RTV on both sides of those rings, haven't had a leak since. Maybe if that space shuttle, the Challenger used a high grade of military RTV, it will still be around.
Part #31 is the actuator, GM part #55562223. Can't seem to find the O'ring, but as typical to you have to buy a new actuator to get one?
On other such actuators, the O'ring is on a collar that fits into the timing chain cover, if you don't at least use silicone grease, that O'ring will twist and turn and never seal properly.
I never know what I am going to do until I study the part, but tell myself constantly, if they did it right in the first place, wouldn't even have this problem.
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