doser tube replacement - having trouble

[chrissreef]

I replaced the tubes on my bubble magus doser per instructions i've seen on another forum but the metal barb/pin of the doser just spins without turning the wheels. I put grease on the outside of the 3 "wheels" and then tried taking it off and they still don't spin, just the metal pin turns (pretty fast). Any suggestions of how to fix this? What did I do wrong?

Thx!

I was following this thread.
http://www.3reef.com/threads/how-to-restore-your-bubble-magus-doser.154339/

 

[Anthony Wood]

I have this doser, IDK what the directions say for doser head replacement because I haven't done one but I can almost guarantee its the grease you put on the 3 wheels on the plastic pump head. The metal rod is what spins the wheels the grease is making it so the rod doesn't have enough friction to grab onto and spin the wheels. Try also pulling the tube through the plastic clips holding it into the plastic cover to put a tiny bit more tension on the wheels. Im talking just the smallest amount you can do. Also vice versa you may have the tube pulled to tight over the wheels.

 

[chrissreef]

thanks, I removed as much lube as I could and it appears to be working.