please.post.here@tia wrote:
>
> Is there a special tool for removing aux valve assembly from head
> without damaging it?
>

Yes, you need one of these http://tinyurl.com/4sbfa and a small slide
hammer. The tool clamps around the top of the auxiliary valve spring
retainer and you use the slide hammer to pop the valve out after removing
the retaining nut first (for which you'll need either a 21 or 22 mm deep 12
point socket). Note that there are two copper seal rings for each valve and
you'll need to replace both of the them. The lower seal ring can be
annoying to get out. However, with a little patience and a 90° pick such as
this http://tinyurl.com/5b695 you should be able to get it out without
damaging the valve bore.

Eric