Flush tank fill question

[07_rockwood2515]

Thought filling the flush tank would be like falling off a log, but ran into an issue. When prepping the toilet for a trip, I wanted to fill the flush tank by first swing the hinged fill tube out. I removed the cap and added water and it filled virtually right away yet the sight tube is empty. At present, there is water almost right to the top of fill tube and again, only condensation visible in the sight tube. It is a Thetford model 402C I believe.

Am I trying to fill the flush tank using the wrong fill tube? Another problem?

[JPBar]

Just keep adding water and watch the fill tube, it acts like a p trap. Thought the same thing the first time I filled mine up also.

[Trevor43]

Originally Posted by 07_rockwood2515

Thought filling the flush tank would be like falling off a log, but ran into an issue. When prepping the toilet for a trip, I wanted to fill the flush tank by first swing the hinged fill tube out. I removed the cap and added water and it filled virtually right away yet the sight tube is empty. At present, there is water almost right to the top of fill tube and again, only condensation visible in the sight tube. It is a Thetford model 402C I believe.

Am I trying to fill the flush tank using the wrong fill tube? Another problem?

If you pull the tank out you will see a funnel looking thing behind the empty spout...... take that and insert it into the top of the fill spout.......this makes it much easier to fill it faster.....and yes it seems like it will take forever to fill it up until you have done it a few times.