"Bill Putney" > wrote in message
...
> maxpower wrote:
>
> > What normally happens when you try to turn the pet cock is the seal
(o-ring)
> > rips inside and you don't realize that it has until you go thru the
trouble
> > of trying to bleed the air out. Looking down you see coolant dripping
out.
> > Now you have to drain it again and replace the valve (o-ring).
> > What I do is soak the valve with a good penetrating oil and as you turn
> > (counterclockwise) pull out on it until it starts to flow. The other
thing
> > to do is purchase a new valve and replace it at the same time. The part
> > number is 4758290, probably about 10 bucks
> >
> > Glenn
>
> You pretty much have to pull the radiator out to have enough room to
> replace the drain valve, don't you Glenn? I've not done it - but that
> appears to be the consensus on the 300M Club forums. Perhaps if you're
> into the timing belt. etc., that would be a convenient time (along with
> the accessory belt tensioners, etc.).
>
> Bill Putney
> (To reply by e-mail, replace the last letter of the alphabet in my
> address with the letter 'x')

There are so many different locations for the pet cocks on all of the
models. Off hand I cant remember which ones have to have the radiator loose
until I look at em.

Glenn