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Discussion in '348/355' started by roadracer311, Jun 21, 2010.
If the pot is broken that is not going to put it where it needs to be.
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I think it also need to have SD1 to program. Do SD2 and SD3 not able to program these seat pots?
Of the 3 only SD1. And those are getting rare even in the dealers.
The seat position potentiometer/gear box is the same component used in mid 90's Jaguar sedans. I have a 1996 XJ12 that experienced failure of the drive coupling as described. here. I opened it up, modeled the coupling and 3D printed replacements from ABS plastic. It's a bit stronger than the original nylon, using a .005" resolution and modifying the print configuration for increased density makes a pretty good part. The original spring clip can be reused or a small o-ring will work as well to hold the petals against the ball on the gearbox output. The original ones I made were a bit rough (I hadn't refined the printing) but they've been in service for 3-4 years with out problems so far.
If there is interest I'll figure a way to make them available for about $7.50 each. I sent some to a guy in Australia with a 355 the other day to try out. He already had someone else who wanted some but I have yet to come up with a way to sell them. I may put them for sale on eBay to see how that works. That may be the easiest.
Good luck with the sales, Niles. As you have discovered, unlike the Jaguar potentiometer, the F355 potentiometer is a vital part of roof operation. Your 3D printed sockets will take away some of the "terror" of not being able to find a fix for our roof problems
Really great that you have achieved this.
Thanks Qavion for adding this link to my roof repair thread. Nileseh, if you put these up for sale on ebay or somewhere, let me know the link and i'll add it on my Spider roof repair YouTube video.
I fixed my mine by installing a roll pin through the sphere as shown on this site, but if you are going to offer new improved ones, I'd be interested.
Does the roll pin method allow slip at the potentiometer end stops? I think the idea behind the "limited slip" ball and socket is to stop the potentiometer breaking if the seat moves too far in a particular direction.
I can't see how it would allow any "slippage", but I have not yet had any problems and I did that fix 3 yrs ago.
Looks like Niles has finally released his 3D printed seat potentiometer repair kit on eBay.
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It even comes with an assembly tool to prevent damage during installation and a new spring clip. An assembly guide is shown on the eBay page.
Not so expensive considering the effort which has been put into this project.