Leak Repair on Waste Pipe ABS Joint Very Confined space

[Calj]

I have a slight leak on an waste ABS pipe 45 degree joint in a very confined space (I can barely reach my hand to touch it) that I need to repair. What ideas do you have to repair it?

The ideas I have researched were to spread ABS cement with ABS shavings along the edges of the joint or cut the pipe below and use a fernco coupling. My other ideas is cut below joint and install another coupling to be flush with it. To take it a step further, I could slip a fernco coupling over the hubs of these two connecting joints. Thoughts?

 

[Jeff Handy]

If you decide to apply any type of sealant or glue, be sure to thoroughly clean off minerals and crud first.
You can use a plastic scrubbing pad, soaked in vinegar.
And roughen up the surfaces with coarse sandpaper.
Rinse off the vinegar and remove all sanding dust.

 

[Jeff Handy]

There was another very similar recent posting by member Mozgus, titled
1st floor tub drain is leaking onto basement ceiling (picture inside)

 

[Jeff Handy]

Go read that posting and the replies, it pretty much was your exact same situation.

 

[Calj]

Very helpful! Thank you!