I have a leak now that I have added in the proper amount of fluid in the hydraulic system.  It is leaking out the union between the lifting arm and the main body.  The I&amp;amp;T manual shows to replace the oil seals, the entire system needs to come apart including the main inner shaft.  

I would rather do that project in the summer, is there any way to get this leak to stop (a stop leak product?) or is it possible to get the oil seals out and replaced without tearing the whole thing down?

STU