Replacing cast iron drain Issue

[mspears]

Hello,

I hired this plumber , after been paid, he will not return my calls . Now, I'm forced to try to fix this on my own. After doing some research, I believe he installed the san -tee backward. I'm unsure whether it should be turn 45 degree or not. Please help me to fix this mess.

I'm unsure of exactly what I need to cut out and replace. And if I turn the tee 45 degree how to get the drain line to connect to the vent in the limited space available.

Here are the before and after pictures. I have one question. Why can't I connect to the vent like the before pictures? Any help would be greatly appreciated.

 

[Reach4]

Is the smaller PVC pipe coming from the lavatory (bathroom sink)?

Is the bigger PVC trap and pipe the drain for the shower?

 

[Sponsor]

 

[mspears]

The smaller is the 1 1/2" is the vent and 2" is the tub. The tub is the only fixtures for the vent.

 

[Terry]

It should have been a wye fitting, and tilted up to be higher than the trap arm to the tub if possible.

And yes, it was backwards.