We have a 5th wheel camper that the hydro pump for the slide out is giving us fits. It runs, so the switches, relays and motor are woring ok. It travels one way fine but not the other. It has fluid and is pushing fluid. It's a 1995 Nomad and it has seen a lot of use.
The pump seems to be screaming when you switch it on. Two years ago it wouldn't come in with out help. We would have to help by pusing it back in. I changed the hoses, two for one cylinder, to make it come in better and have to help it going out. Now it barely goes out but does come in fairly well. I have called numerous RV dealers and no one knows anything about it. The company Dewald / Oildyne is out of business and they were bought out by Powergear USA. I called them and they said it's obsolete so I can send you a new one for $ 1900.00.. !! The cylinder is not leaking and the cable assist system to get the slide out in and out is working properly and is not bound up. Just wodering if any of you guys who are up on hydropumps could give me an idea of what to look for in the pump. I really think it's in the spools for the in and out or maybe the check valves in the spools. I'm at a loss and we need to use it this weekend to go see our grandson play baseball. As I said I can muscle it out and in but at my age I prefere not to. Been working on it for a few days now. Thanks for any help at all. Roger