to rebuild or replace ?

allright, i took a closer look at it, and they welded a plate to the front of the shaft so in order to get to the seals in the cap i need to remove the nut from the back or cut off the weld...and i dont want to do either of those things (the nut is in the 500 ft/lbs range, so i dont see how to get it off, nor now to get it torqued back on...so im just gonna replace the cylinder


any though on converting it to electric?