Recent content by Mike7411

You certainly may be right. I *did* stick my pinky finger into the hole to feel for O-rings and/or grooves, and I found none. There are none on the plunger itself. Too bad Craftsman doesn't support this jack better. --Mike

Closure (I hope!): I think I fixed my jack, at least for a while. Rather than being sealed with an O-ring (or rings), I found that the plunger of this particular Craftsman jack is sealed with a rubber "collar." In the case of my jack, part of this collar had been forced out of the hole, and a...

I forgot: How did you get the plunger off? The plunger of my jack looks like it would come right out of its bore if one removed the handle "hinge assembly" and then pulled on it. What exactly did you need to loosen with that 1-1/16" deepwell? -- Mike P.S. The design of my particular jack may...

Thanks for this; it's encouraging info. I've been reluctant to repair the leaky plunger of my 3-ton Craftsman jack because (1) I don't know how to get the plunger out and (2) I don't know what size O-rings to get. My jack is leaking from around the plunger. It looks like an O-ring is out of...

Thanks, but to confirm, it appears that my jack is leaking because of failed O-ring(s) in the plunger. I appreciate the Lucas tip, however. --Mike

Thanks. I'll take a looksee and report back. --Mike

Thanks! To confirm: You're telling me to measure the diameter of the "plunger," which is about 1/2" diameter. It functions as a small piston to force fluid into the inner cavity of the jack and force the main piston out. Right? Unfortunately, the O-ring on the little plunger is only...

Repair Craftsman Jack? // revisited My 3-ton Craftsman Model 875.50186 jack is leaking. I'm fairly certain the fluid is coming from around the "plunger" that's linked to the handle and forces fluid into the cylider. It looks like the O-ring there has failed and part of it is protruding from the...