fixing leaking hyd ram on D17 ser. 4, questions.

I took off the leaking hydraulic ram on my D17 series 4.  Whenever the tractor was running, fluid would be slowly dripping out of this cylinder, come out of the seal by the end of the ram.  I took it off tonite and took it apart.  Obviously the seal on the end is probably bad, but when I took it apart, there is some other parts that are questionable.  In sequence from the outside of the ram is the seal and cap, and then there's a sleeve that the ram slides through and then the end of the ram with the inner seal parts.  There are two fiber collar pieces, both of which have a slot in them.  It that just to remove and replace them or are they supposed to be one piece.  Also the sleeve between the end cap and the inner seals seems to have quite a bit of wiggle room between it and the hyd. ram.  Shouldn't this be somewhat tighter?  Does AGCO sell a complete kit for this ram that would include the outer seals, inner seals, and that sleeve part?  Now that I got it almost all broken down, I don't want to just replace the outer seal and put it back on to later find out that I should have replaced some of the other components.  Or would I be better off dropping it off someplace and having the whole thing rebuilt.  This is the first ram I have taken apart and want to do it right, and would like to learn as I have a couple on my HD3 to do as well.  Anyways, here are some pictures. 

Yes, Agco sells the entire seal kit.  I've replaced both on my D17 IV.  Part no. 70255805.  Approx $57 for each a year ago.

Yes - get a GOOD face pin spanner wrench....my mechanic I was working with had some snap-on ones.  Since we did NOT know about the loctite we had to pin the cylinder rod clevis on one to a crawler drawbar and use a cheater pipe on the spanner wrench to get it off....sigh...

Looks like ya got a nick on the ram from the picture there Chuck.  If it is nicked or gouged you probably wont be able to hold oil in the cylinder as it will wear the seals out fast.    Since oil is only supposed to be on the back side of the piston, might work.  HTH

I think it is the way that the picture was taken, as it looks like the housing is bent the other way.  I will check it with a straightedge when I get the rest apart.  Thanks.

Chuck - when you have straight lines in a photo bow out like it's called "barrel distortion" in photography.   If happens at the wide angle end of zoom lenses.  If you step back a few steps and zoom in with the lens you'll find that distortion goes away.   Mike