rmedina

In terms of boiler sealant, is there anything you would recommend and any procedure? Im planning on disconnecting the engine preheat loop so that I don’t run the risk of overheating the engine by losing coolant. 
 

Is it best to apply the sealant while the tank is removed, or is this something you could do with the tank still in place on the coach?

Any and all help is greatly appreciated! Thank you.

On 6/16/2020 at 10:15 AM, Ivan K said:

Yeah, tons of fun pulling it out. Good job! I feel your back pain. Luckily, our fresh water loop is external so no need to cut the tank. My problem ended up being a coolant leak by the exhaust pipe, a pin hole. Later, the brass filler neck cracked and separated from the tank. It is just a brass piece soldered to steel pipe... I converted it to non-pressurized system with a nice test plug in place of the cap, used for radiator testing. It overflows into the overflow tank just like it always has, no difference. Since the thermostats will not let it actually reach boiling temperature, it works great ever since. There are ways to repair/replace the neck but it's just much easier this way and functions exactly the same.

Pics for comparison:

Out of curiosity, how did you pull the freshwater loop off, I’m getting ready to do this myself over the next week. Hoping to cut the boiler tank in the middle and make any necessary repairs, then weld it back up and pressure test it. I’m praying there’s a way to safely remove and reinstall the fresh water loop on the shell.