lift and turn drain removal

I have a lift and turn drain in my bathtub. I do not see or feel any set screw, so I removed the knob by turning it counter-clockwise, but all that's underneath is a flat peg of some kind--not a screw. How do I remove the top part of the drain so that I can clear out the gunk from the drain?

I've attached a (rather blurry) photo of what it looks like.

Thanks!

Put the knob back on and pull the assembly as high as it will go...then look under it for the set screw...

I looked with a flashlight and felt all around the center with my pinkie (good thing I have small fingers!), and there is no screw. I did see that it's a Watco and did some more googling, and it appears that others have had the exact same problem I am but were unable to get an answer. I might try contacting the manufacturer.

missfixit said:

I looked with a flashlight and felt all around the center with my pinkie (good thing I have small fingers!), and there is no screw. I did see that it's a Watco and did some more googling, and it appears that others have had the exact same problem I am but were unable to get an answer. I might try contacting the manufacturer.

Click to expand...

Dear Missfixit,
You may get in touch with Eaglemountain Products at:

1-800-308-0864

By Fax

Fax:
1-800-765-4115

By Email

sales@eaglemountainproducts.com

Their website, which shows many of the drains they make, is at:
https://www.buywcm.com/egl/products/products.asp?d=wtc

Regards,
HE

UPDATE: I contacted Watco's sales department, and as it turns out, well--it literally turns out. After you remove the top knob you just need to take a wrench and turn the entire brass pin counterclockwise then lift the whole assembly out. It was in there pretty tight but twisted out.

A disgusting bunch of hair, gunk, and even one of my daughter's necklaces was bunched up around the T section, so no wonder I was having drainage issues. I have a clean drain now!!! I don't think I'm going to bother putting it back in and am going to use a good old-fashioned rubber stopper along with a hair stopper.