393 Holding tank question

[Joe Roc]

Can anyone tell me how to open this? Fairly urgent. Thanks!

 

[arf145]

So I take it the answer is trickier than unscrew the red inspection port counterclockwise?

 

[Ron20324]

I made this "wrench" from a 1 x 2 x 12". Then unscrew the red inspection port counterclockwise

 

[BigEasy]

Ron,
does your wrench also fit the water tanks bungs also or did you have to fabricate a different size for water tanks?

 

[Ron20324]

... does your wrench also fit the water tanks bungs ...?

That was made for my B323 , 2006, water tank. I never tried it on the holding tank, but they look the same. At a seminar by the local Benny dealer, I asked about a tool for this purpose. He said he knew of none. Necessity being the mother of invention, you know. I'll try to remember to try it on the HT tomorrow. Yes, make it so you can use two hands on it. There are BIG rubber o rings on those fitting, and hard to break loose.

 

[BigEasy]

I like your design; simple & effective. I have used everything I could get my hands on including crescent wrench handle, Channel lock pliers handle, stick, etc. Think that its time that I fabricate a wrench!!
Thanks,
David