

Alde has those little stubs in plastic. I bought some spare parts from another T@B owner and those plastic stubs were included. I believe you can find the part number on the Alde USA website. All my stubs were corroded so I replaced them with the plastic ones.pthomas745 said:Update: corrosion cleaned, ready to start putting things back together. Thanks again for all the good advice. With the proper tools I managed to heat shrink the convector ends. For those of you trying the conformal coating, please take the warnings seriously about fumes, etc. Stuff is..harsh. I wound up with my N95 masks on, used fans to keep the fumes away, etc. But it went on very easily.While examining the convector ends, the non return valve, and that small "stub" that connects the hoses into the expansion tank: I was getting quite close to having the corrosion eat all the way through the aluminum. On the inside of the return valve and the "stub", there were small "eruptions" on the inside of the tubes. I left these alone. But: I would much prefer to replace the two parts. Especially that "stub" on the rear convectors that are hidden from sight. Of all the places for a failure, that would be the worst.What I learned while reading and re-reading all these posts is: the sizes of the hoses, and the sizes of each of these little "stubs". Alde does have a part number for the stub: 1900-119, which is a simple 70mm long, 22mm aluminum tube. In the English "caravan" parts places, it sells for a couple of dollars, but with a huge shipping cost. Is it possible to replace that simple stub with a 22mm aluminum pipe like the one linked below? I bought two of these, and they fit the diameter fine, but they would have to be cut down a bit. I don't know enough about "anodizing" and whether or how the interior of these pipes would handle the Alde glycolI would still prefer to have a non-compromised connector at that point.I also will modify the hoses going into the expansion tank. I purchased a "3 inch, 90 degree" elbow that drops down an extra inch from the tank, and extends an extra inch to the rear convector. The EPDM heater hose is easy to cut and size. This will mostly eliminate the difficult angles in that connection. I'm just a bit concerned with that "stub".
The guy I bought the spare Alde stuff from received the parts under warranty so I'm thinking it was a 2020 or 21 but not sure. Here's a pic of my old stubs which were replaced with the plastic ones.pthomas745 said:Thanks, Dan. I sometimes wonder how many other smaller engineering decisions were made on the US Aldes delivered after the "Magic Glycol Change" date. How are the convectors different? The hose configurations and install processes? The little metal "stubs" that we see corroded?Do you know what year trailer/Alde the plastic stubs came from?Did you try reaching out to Missouri Teardrops? I sent an email this morning with the parts descriptions but have not heard back yet.
