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Post by gwilliman on Sept 10, 2021 22:11:44 GMT
Has anyone tried to replace the gas springs on a 419 swim platform? Mine are leaking oil, and I can't figure out how to install them when the swim platform is down. In that mode, the piston/spring is extended and so I'm stumped on how to install.
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Post by moonshadow on Sept 11, 2021 11:50:42 GMT
Unscrew it from the boat. Just turn the body of the spring.
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Post by Damen af Kungsholmen on Sept 12, 2021 18:13:07 GMT
Hi I don´t think its a gas spring, I think its a damper. Difference are that the gas spring push out the piston and a damper are limiting the speed without force. The result will be that the swimming platform will not just fell down. Sample of how a damper works.
Why your damper is leaking out oil. The piston are unprotected. Any damage on the surface on the piston rood will harm the sealing or dust or clay on the piston rood will also destroy the sealing. When mounting the new damper mount it the same way for full function. It shouldn't be any problem to replace them. When you get the new one you can test the function.
IF Jeanneau are using a pushing gas spring then its wrong part for that application.
Good luck :-D
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Post by gwilliman on Sept 13, 2021 0:40:02 GMT
Maybe I used the wrong word, but the strut is basically like a spring. The strut in its resting form is retracted. In this position the swim platform is up. When the platform is lowered, the strut is extended and the potential energy of the spring is to aid in manually pulling up the platform. The platform is pretty heavy and I believe the purpose of the struts are to aid in the raising of the platform.
That said I have a few ideas on how to replace them and I will report back if successful.
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Post by Damen af Kungsholmen on Sept 13, 2021 14:26:53 GMT
Hi Surely you have a gas spring or strut. Surly wrong of me, sorry.
I dint thought that Jeanneau would use such strut that are retracted. I use to say that pulling gas spring is 25 times less as good as a pushing strut. 1/5 lifetime compared to a standard, and 5 times more expensive. I can understand that the swim platform are even more heavy when one strut are out of order. Rely understand why you ask for any hints of replacing it. Mount the lower part first and use a rope around the pressure tube and extract the strut by help from wife, friend or younger or older brother/sister and put into place. You can use tape around the pressure tube so the rope will not slip.
Good luck :-Dan
I have a small disease of struts after 32 years as sales engineer and product manager of gas spring. I get allergic when i see a strut mounted upside down. Its not easy to now that the pressure tube should be on top so the small amount of oil are in the bottom and lubricate the sealing. Also a hydraulic damping will be a result at the end of the movement.
By the way I introduced the gas spring to Selden for the rood kick 1991. Do you think I have a gas spring in my rood kick? Not yet. I still have a coil spring, but its time to replace that one. Will come back to the Forum when its done and.
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Post by gwilliman on Sept 13, 2021 14:46:55 GMT
Thanks for the reply....That is what I will be trying to do. I know which end is the piston, so I will be able to mount the cartridge at top the same as existing strut. Pulling the cartridge up will be the challenging part!!!
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Post by zaphod on Sept 13, 2021 17:26:46 GMT
One idea you can try is to pick up a piece of plastic pipe with a similar inside diameter to the diameter of the ram rod. Split the plastic pipe down the middle, and cut it to the length of extension you need to allow access to both end bolts. Then you can extend the ram and lock it into place by snapping the pipe onto the ram to lock it into the extended position.
We used to use a similar technique on big hydraulic machinery to lock a ram into an extended position while working on it. I'm not sure how well it will translate onto smaller stuff, but it might be worth a shot.
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Post by Damen af Kungsholmen on Sept 13, 2021 18:48:25 GMT
Get help by using the topping lift.
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Post by gwilliman on Sept 13, 2021 20:01:30 GMT
Thanks all...will report back when I have success.... Well today (Sept 16) my mate and I replaced the gas springs. Most of the time was spent "problem solving" different scenarios that would get the old ones off. Here are the steps we took: 1. First put vice grips on the rod to prevent sudden retraction if we were able to remove the lower socket from the ball attachment. 2. We actually used the vice grips to turn the rod thereby unscrewing the lower socket from the rod. We had already found by examining the new strut that the lower socket was screwed on to the threaded rod. 3. What we found then was that the vice grips were actually not required to hold the rod from retraction and if fact we had to push the rod back into the cartridge. It had failed so much that it had no spring retraction and in fact was making it harder, not easier, to raise the swim platform. 4. Then we attached the new strut/gas spring that we got from spareparts.jeanneau.us to the attachment point on the swim platform and muscled the cartridge up until we could slide the upper socket onto the ball attachment on the hull. The sockets on either end of the strut just push onto the ball attachments once the retaining clip is removed from the strut. 5. Once we replaced both struts, pulling the swim platform up was night and day easier. Now we know how to replace them, but I am very disappointed that they failed so badly after two years!!!!!!!!! Attachment Deleted
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Alan
Junior Member
Posts: 16
Jeanneau Model: Sun Odyssey 419
Yacht Name: Sun Cream
Home Port: Benfleet Yacht Club
Country: UK
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Post by Alan on May 11, 2022 17:57:06 GMT
Hi, mine have also failed, I found then in one of the boat lockers when I purchased the boat 9 months ago. They are both in the closed position and I can't pull the piston rod out however the piston rod will rotate. I have received a quotation from the original manufactures in France (Ressorts spec) to replace them at a cost of £130 each and 6-8 weeks lead time. Think I may just put up with pulling up the platform on the rope pully system for now unless I can find them cheaper somewhere else.
Can I ask how much you paid for them direct from Jeanneau, was it a similar price?
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Post by barnette on Jul 27, 2022 10:15:05 GMT
Those gas springs replacement with affordable prices and good quality are suggested. I Used a pair of Apexstone gas springs to prop up a very heavy cover over pool equipment and they worked out perfectly. Hope my experience will help.
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Post by Chris Meyer on Jul 27, 2022 15:17:34 GMT
Maybe I used the wrong word, but the strut is basically like a spring. The strut in its resting form is retracted. In this position the swim platform is up. When the platform is lowered, the strut is extended and the potential energy of the spring is to aid in manually pulling up the platform. The platform is pretty heavy and I believe the purpose of the struts are to aid in the raising of the platform. That said I have a few ideas on how to replace them and I will report back if successful. It seems our dampers do nothing and it makes it hard to lift the swim platform. I was going to disconnect the dampers and twist them hoping that we can get more traction. Are these adjustable like that? Chris
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Post by Chris Meyer on Jul 27, 2022 21:13:27 GMT
Thanks all...will report back when I have success.... Well today (Sept 16) my mate and I replaced the gas springs. Most of the time was spent "problem solving" different scenarios that would get the old ones off. Here are the steps we took: 1. First put vice grips on the rod to prevent sudden retraction if we were able to remove the lower socket from the ball attachment. 2. We actually used the vice grips to turn the rod thereby unscrewing the lower socket from the rod. We had already found by examining the new strut that the lower socket was screwed on to the threaded rod. 3. What we found then was that the vice grips were actually not required to hold the rod from retraction and if fact we had to push the rod back into the cartridge. It had failed so much that it had no spring retraction and in fact was making it harder, not easier, to raise the swim platform. 4. Then we attached the new strut/gas spring that we got from spareparts.jeanneau.us to the attachment point on the swim platform and muscled the cartridge up until we could slide the upper socket onto the ball attachment on the hull. The sockets on either end of the strut just push onto the ball attachments once the retaining clip is removed from the strut. 5. Once we replaced both struts, pulling the swim platform up was night and day easier. Now we know how to replace them, but I am very disappointed that they failed so badly after two years!!!!!!!!! View AttachmentAre these dampers adjustable? Mine are not leaking but don't seem to do anything to dampen the drop of the swim platform. I think I will see if I can twist one of these and create some dampening effect. Chris
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Post by Zanshin on Jul 29, 2022 4:34:51 GMT
The standard gas struts are not adjustable. Their dampening force is set at the factory. They tend to work very well until the gas leaks out, once that happens they need to be replaced.
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Post by Charlie-Bravo on Jul 31, 2022 11:33:05 GMT
For UK ( they don’t state overseas delivery, but might if asked) SGS is a company that make 316ss gas springs, and will make to almost any size and power, plus adjustable models , and deliver in about 4 days, and are reasonably priced, I would imagine they do damper springs as well, . I used them to make a gas boom strut on the last boat, about 1/4 the price of a Selden strut, it was good to be able to have a choice of how strong a spring to have. CB www.sgs-engineering.com/gas-struts/stainless
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Post by kjw on Jun 21, 2023 17:17:01 GMT
The struts on my 389 swim platform seem to have failed. Has anyone bought new ones?
If so from where and how much, thanks.
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petros42
Full Member
Posts: 31
Jeanneau Model: SO 419
Yacht Name: Pole Dancer
Home Port: Gabriola
Country: Canada
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Post by petros42 on Jun 22, 2023 5:07:48 GMT
I had mine replaced twice (under warranty) but they fail after 3-6 months and do nothing. I pulled them off and replaced with a couple of blocks and a small line. If anyone finds replacement struts that last ... I'd be interested.
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Post by resilience389 on Jul 18, 2023 15:11:19 GMT
I just bought a 389. Gas struts failed. They worked during the survey - two weeks later they failed. Luckily I'm strong enough to gently lower swim platform, but rest of crew cannot. Any advise on finding replacement struts are welcome. Anybody know weight of swim platform or have any other specifications for replacement struts? Thanks
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