Repairing a leaking rusty stanchion base plate
Oct 26, 2021 21:52:21 GMT
Post by Trevor on Oct 26, 2021 21:52:21 GMT
Hello,
While removing the vanity cabinet on our SO42DS I noticed the base to the lifeline gate had been leaking. It had also caused rust to the galvanised steel base plate. The base plate is 160 x 60 x 8mm thick and unfortunately is galvanised steel. I wanted to fix the leak and replace the plate with stainless. The replacement stainless plate I used was 160 x 50 x 6mm. I thought this would be a simple issue but like most things boating, looks can be deceiving.
When trying to remove the nut, it became apparent the nut and bolt had spalled and the nut was now effectively welded to the bolt in some part of the thread. To remove the nut fairly extreme force was required and it was removed very slowly. The base of the gate had to be packed out with timber against the toe rail to prevent damage to the toe rail.
The thread of the bolt was damaged and it had to be recut with a die from the underside. The die size is metric 14 x 2mm. By the time I had finished the die was badly damaged but the thread on the bolt was pretty good. It was a slow process because I didn't want to remove everything from the top side so because of the restricted space, cutting the thread was done about 1/8 turn at a time. I also ran a tap through the nut to clean it out prior to reassembly.
New sealant was applied to the stainless plate and the nut tightened. The job finished ok but it was a much longer task than I had originally hoped. I was surprised that finding the thread size on the internet was difficult so thought it was worth mentioning here that it is 14 x 2mm.
I know that stainless is more expensive than galvanised steel but wish Jeanneau had used stainless in this location.
I hope this may help someone else who may need to do the same thing.
Regards,
Trevor
While removing the vanity cabinet on our SO42DS I noticed the base to the lifeline gate had been leaking. It had also caused rust to the galvanised steel base plate. The base plate is 160 x 60 x 8mm thick and unfortunately is galvanised steel. I wanted to fix the leak and replace the plate with stainless. The replacement stainless plate I used was 160 x 50 x 6mm. I thought this would be a simple issue but like most things boating, looks can be deceiving.
When trying to remove the nut, it became apparent the nut and bolt had spalled and the nut was now effectively welded to the bolt in some part of the thread. To remove the nut fairly extreme force was required and it was removed very slowly. The base of the gate had to be packed out with timber against the toe rail to prevent damage to the toe rail.
The thread of the bolt was damaged and it had to be recut with a die from the underside. The die size is metric 14 x 2mm. By the time I had finished the die was badly damaged but the thread on the bolt was pretty good. It was a slow process because I didn't want to remove everything from the top side so because of the restricted space, cutting the thread was done about 1/8 turn at a time. I also ran a tap through the nut to clean it out prior to reassembly.
New sealant was applied to the stainless plate and the nut tightened. The job finished ok but it was a much longer task than I had originally hoped. I was surprised that finding the thread size on the internet was difficult so thought it was worth mentioning here that it is 14 x 2mm.
I know that stainless is more expensive than galvanised steel but wish Jeanneau had used stainless in this location.
I hope this may help someone else who may need to do the same thing.
Regards,
Trevor
