transmission cooler lines

[famfeld]

I am replacing the radiator on my 2000 v70 N/A automatic and the got new transmission lines to put in since the old ones were questionable. The shorter line that goes to the top of the radiator connects to the front of the transmission screws into a metal fitting on the transmission using a 22 mm nut. I don't know all the technical terms to describe this connection, but it has two 22 mm nuts. Is seems that the top nut screws into the fitting and the bottom nut is part of the fitting, possibly threaded into the transmission housing (looks like a black metal cover). My problem is that when I turned the nut, the bottom one turned but did not come out. There is an o-ring that came loose and now this fitting fits loose in the transmission but I can't get it out. Could it be stripped? Does anyone have experience getting this fitting out? I need some help on how to proceed. Does it need to be drilled and tapped?

All help really appreciated, even if its just the names of these connectors.


Thanks,

-Feld

[cn90]

I already linked you the DIY in the other thread.
The bottom line is: counterhold with an adjustable wrench, then use the 22mm socket on breaker bar to loosen it.

[cn90]

OK,

Here is the link again:

DIY: 1998 S70 GLT Trans Cooler Line Rebuild for $10!
https://www.matthewsvolvosite.com/forums ... hp?t=55794

Scroll down and you will see the adjustable wrench used as counterhold.

The anatomy is like this:
- The "bottom nut" is part of the transmission, it just spins around. It is a "loose fit", i.e., no O-rings or whatsoever, this way when the trans fluid gets hot during a drive, air can vent out this "loose fit". But it is done in such a way that water can't get in. Look carefully and you will see the clever design.
- The "top nut" is part of the cooler line. This is the nut you need to turn, but again you have to counterhold it.

Very simple design.

It is on VERY TIGHT, you need a breaker bar.