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Sears 1 1/2 ton , model 328.12002. How snug should the plunger o-ring feel? Should it fit the plunger lightly or pretty tight? The plunger OD = 0.784". The o-ring ID = 0.792". Do I need to look for one a couple of thousandths smaller than the plunger OD? Is there a rule of thumb for this...

Anyone know if the release valve lock nut is reverse threaded? Thanks.

Does anyone know how the fluid is supposed to flow in the overload valve? I removed the top screw and was expecting to see the bottom screw so I could screw it in and count the number of turns. All I saw was fluid filling the hole and what looked like a slolid piece of rubber or something...

-------------------------------------------------------------------------------- Nice to meet y'all. I'm an old retired geezer who believes in DIY. I try to fix anything I can. I have a Craftsman floor jack (Japan made), Model # 328-12002 and it was under water. Now the arm will not stay up at...

Nice to meet y'all. I'm an old retired geezer who believes in DIY. I try to fix anything I can. I have a Craftsman floor jack (Japan made) and it was under water. Now the arm will not stay up at all. I suspect the oil is topped off with water, just not sure of that yet. How do I completely...