The return pipe 5 goes in where the the bit of tissue is sticking out in this pic... the right side bit at the bottom middle - it then feeds back into the sump - you may need to remove the blank nut and get one with a suitable pipe on it though... should be there for your Bailey system.



You may have an extra pipe on the top of the rocker that also feeds into the catch tank. The pipe at the top of the tank in the diagram breaths to the air and sometimes sticks out of the bottom of the tank instead... sorry but someone else probably knows the spec R stuff/ layout and can be more specific for you. You may be talking about the big one that mirrors the water one and I'm wasting your time