Quote:
Originally Posted by John Doe
Rleo--I can only see your response in my email notification--can't see it here--maybe you deleted it? Anyway, this was my first plan, but after a diligent search, it doesn't look like a common problem. If not sitting up, I guess I could have a lemon, and the seals are failing b/c the cylinder or shaft is not machined properly? I just need the boat on the water soon.
PS: know much about Saab marine diesel engines--got some problems there too  |
I pulled it because after I posted, I realized I made some assumptions and used the wrong terminology.
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Marine hydraulic steering is usually based on a radial piston pump that's integrated with the helm and acting directly against the steering ram(s) or, with an assist system that's electrical or driven by the engine.
The multiple turns needed to get any steering are probably from a low fluid level due to the leak...these systems don't really hold a lot of fluid and IIRC, the helm pump body usually acts as the reservoir consequently, a small leak causes a big problem. Are you sure the prior pumps were bad? I'll bet not...
Also, do you know where the leak is? If it's repeatedly leaking at the helm either the seals aren't standing up to the service or, the helm shaft is damaged during repair or maintenance (shaft goobered by service tech when replacing seals) or, the the helm shaft is corroded from exposure. Similar seal failures could be experienced at the rams as well. Failure from exposure seems unlikely since these are designed for marine service...I suspect poor repair technique has hosed the helm shaft or rams.
If you aren't seeing any leakage at the helm or rams, there has to be a leak somewhere else that the tech has overlooked through carelessness or neglect.
This same sort of steering is used on forktrucks and some of those sit for long periods of time and are still reliable.
Good luck...you're an absentee boat owner. Caveat Emptor