Prentice 742 grapple

[Banjo picker]

My grapple has sprung a leak on one of the cylinders that open and close the grapple.  My manual does not cover the grapple, as there are several that could have come on the machine.  So does any one have a blow up of the cylinder that opens and closes the grapple.  I got a couple of seal kits with the machine when I got it.  I have the top pin out and plan on rebuilding in where it is on the machine.  Just want to make sure I put the seals in the right way.  Any one have a picture they could share or a link to one, I would appreciate it.  Banjo