The lower hose I attached the shop vac to is the flow INTO the reservoir. You can confirm which hose flows into the reservoir by blowing into each of them. There is a check valve in the system, so t… (View Post)
I tried the shop vac method and it worked great at getting all the fluid out. After draining the system from the bottom of the trailer you need to drain a cup or so from the shower bleed valve to get… (View Post)
On my 400 the left hose had a check valve that prevented blowing it out, so this is the outflow into the reservoir where suction would work. I'm wondering if my hoses are reversed on my reservoir si… (View Post)