D-2 Questions

Yes there is "O" ring seals there to seal the oil in the lines. Look closer there on the lines they may just be hard & flat from old age & heat.As for a puller I think you could use a H-D bar puller set up to pull the clutch off.Leave the nut on part way so when the drum breaks loose from the splines it doesn,t come off & hit you or somebody. At the shop if we didn,t have the hydraulic puller available is when we used the H-D screw puller & when you put all the tension on it you can we would hit the end of the center puller bolt with a heavy blow with a hammer & usually they would break loose.Yes & with the pullers either type you want the best grade studs (bolts) you can get so they will stand the pull stress.

The "O" rings fit flush in a grove. May look like there is nothing there but if they weren't you'd have oil squirting everywhere.

I have used a pick to remove old o rings from my D2 that hat the texture of Coal. It was no wonder they Leaked

as far as the clutches they take some power to pull, Use Grade 8 rod,this porta power is 17 ton, some will use a bottle Jack, I like the idea of keeping my distance and fingers. see pic

I found the o-rings you guys were talking about on the hyd. lines.
Those o-rings look like something that you can get at a hareware store or are they something special from Cat.

They are a standard Buna-N type "O" ring. I get mine in bulk from www.mcmaster.com. A good industrial supply would have them but I don't know about a hardware store. Can't find my notes on the size but I will look in the am.