Jim,
I have a reproduction parts manual and it looks as though you can rebuild this thing..
I have created a pdf of the water pump group, it is attached...
[attachment=9289]955 water pump group.pdf[/attachment]
i would also suggest that you look for Gemdozer and see if he has a complete WP for sale.. he has been extremely helpful for parts for my 955. (Hector, i hope you don't mind me referring people to you)
rod
OK, Rod beat me to the parts diagram.....
Be kind to that housing and cover....they are unique to the 955 and can be hard to come by, otherwise the guts are the same as the D4....I do recall some posts on how Cat has "Mickey Moused" the seal but I didn't keep the details.
OM,
I have seen the amount of help you provide, so I am glad that i have provided help that you yourself would have done..
I have found this group invaluable with my tractor for the short time i've been here...
this group is awesome...
rod