Removing 40mm waste from soil stack boss

[mr smith]

Hi there,

I have a 40mm waste that is capped and sealed with a rubber adapter. I need to reuse this access point but I have very limited space.

The capped 40mm pipe wont pull out of the rubber adapter or the rubber adapter from the soil stack.

Are there any top tips for removing these? If I could get a drill in between the joists I would drill all the way round the seal but there is just not enough space.

I am not able to cut in a new strap on stack either as it is internal and it is already creeping into the room below!

Many thanks for any help in advance.

 

[Chalked]

Are you sure its push fit? Could be solvent weld?

 

[jase158]

You could push screwdriver between boss and soil pipe and try getting it off but this could crack soil pipe.
could you put another one above, need pics really

 

[JCplumb]

Solvent weld wouldn't be glued to a rubber adaptor.
My guess is it just needs a firm tug.
What kind of boss is it going in to? A photo would speed things up.

 

[mr smith]

Cheers guys, hold tight I will work out how to load a pic up

 

[mr smith]

The internal diameter of the boss is 50mm and the soil stack fitting is OSMA. The boss section of the straight soil section has a hairline ring around it like I have not seen before. Almost as though it is in two parts. Todays boss sections look all one piece. I would ruffly date the stack at 80's

 

[chris watkins]

Silicone lub spray & a strap wrench to twist it around.