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.
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.
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.
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.
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!!!
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.
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!!!!!!!!!
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?