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Hi all got my old trusty 40 year jack that my uncle gave me when he was in the business and i was just a young boy. So it was leaking from the front o-ring. Took it apart changed the o-ring to a 222 size, but still leaking a little and and with no weight on jack in full up position goes down in...

Hi all have a Blackjack, has replaced internals a couple years ago was again leaking at front o-ring. So replaced but I know I got the o-ring rize slighly off. Does anyone know what the actiual o-ring size is?? Its O-ring no. 62

Hi all so had a great working Bj-2 for well over 20 years. Stopped lifting quickly and was not holding well. So opened it up found the cup in pieces. That's all I changed and put it back together. So now it seems its weeping a little at the cylinder. Guess you need to use some silicone on...