Instead of a puller you can use a threaded rod with nuts and washers on one
side of the pin and on the outside of the case.  Just turn the nuts on the
threaded rods.
(In a pinch, doing it this way you can remove the pistons with the engine
still in the vehicle.)

On Wed, Oct 3, 2012 at 1:06 PM, Jim Felder <jim.felder@gmail.com> wrote:

> I managed to get the heads off of all the waterboxer's cylinders but one...
> and that one I had to stand on in the driveway and whang it with a hammer
> like it was a brake drum. Anyway it's out and now it needs to go back in. I
> have the wrist pin pulled out of the piston about 1/4 inch past the piston
> edge, so I've made a little progress, but now it seems that it does not
> want to move any more, at least with what I am moving it with. I have a
> bolt on my puller, about 3 pounds, and I put the head through and catch it
> on the far side of the wrist pin, working from the front of the engine.
>
> Does anyone know of a better way? A better choice of puller tools (I don't
> have any fancy expanding collets)? Would about an hour of propane on the
> piston crown loosen things up around the wrist pin?
>
> Got the heads back, want to get on with this project.
>
> Jim
>