[Baz]

OK - I re-read it and sounds like you just need to cut the pipe and use new fittings and a short section of PVC pipe the same diameter as what you have. Looks like 1" or 1 1/4". Look on any of the fittings and it should be there in very small lettering.

If the split is far enough away from the elbow so you can cut out the split and still get a coupling on after the elbow part....and you can do the same on the other side of the split....then you will only need two couplings and a short section of pipe.

Be nice to replace the entire section from the tee to the elbow. Then you just get a female adapter to screw onto the external threads on the tee.....section of pipe to elbow.....elbow....pipe....and then coupling. Hopefully there's enough play in the vertical pipe so you can move it back and forth to get the pipe glued in. Meaning....do everything except the elbow to pump and then do it last.