Hello everybody, After Reading a lot of very useful information about how to re-grease the 348 flywheel, how to remove the clutch, and so on… I finally took courage and I did it. Successfully! I want to thank to the men who elaborated all the invaluable information in Ferrarichat, and in the next websites That I link below: My Ferrari 348 - Home My Ferrari 348 Thank you very much, this is the reason why I can keep my 348 running! As you can see, there is not much that can be added to these nice DIY guides, just want to say that for me, it was an easy, messy and enjoyable job. I took me time, and now I know that I can change my clutch in less than 2 hours. Due to my custom exhaust system that allows to do all the work without removing it, neither the rear bumper. Hera are 5 links with some pictures of the process, maybe useful to somebody in the future: Disassebly Clutch and flywheel (can be seen the gear oil leak): Disassembly. Ferrari 348 clutch & flywheel - a set on Flickr Cleaning clutch and flywheel: Cleaning. Ferrari 348 Clutch & Flywheel - a set on Flickr Flywheel disassembly. Cleaning and re-greasing: Flywheel Disassembly, Cleaning & Regreasing - a set on Flickr Clutch and flywheel installing. Triple seals: Clutch & Flywheel reinstalling - Triple seals - a set on Flickr Work completed and cat impressions: Work completed & Cat impressions - a set on Flickr Besides standard tools and some rags, cleaning papers, degreasant and a brush for aplying the kluber grease, here are the especial tools and parts that I have used for doing the job: 348 Kluber re-grease kit from: Maddogclutches Home The kit contains: - 200 gm of Kluber grease - Triple Seals 3 x genuine Ferrari part no 137249 - Shaft 'O' ring and Ferrari snap ring - Complete set of 348 flywheel 'O' rings 1 large, 12 small - 2 longer bolts you need to open the 348 flywheel - As a gift they incluided the 348 clutch bolt kit: fresh pressure plate and ring gear bolts for free! Unfortunately for me this bolts are for the AP Racing single clutch type, and they are slightly different from my Valeo single clutch type. Great service at a fair price from this web, fast shipping and good comunication; Andrew Holman was very kind solving me some questions by e-mail about the flywheel reassemble in less than 30 minutes. Totally recommended. For the flywheel ring nut: I bought form eBay an used axle nut socket for Dana 50 & 28 (1/2" Drive) (76 mm x 80 mm.) 1985-1995 FORD & GM. Ref: NOS OEM # 45966 It was more difficult for me to find this tool, because there aren’t cars with Dana 50 axles in Spain (as I know), but in the US you can find it in many autoparts stores. So I bought it to a guy from NY, and paid 29€ Shipping incluided. Still a nice price for me. This tool worked fine with an impact gun. This nut was really tight and I used an old wheel rubber to avoid the flywheel to rotate while using the impact gun. The nut was unbolted in 5 seconds. The clutch Alignment tool from: Kingsborne Clutch Tools - Automotive Clutch Alignment Tools Nice price ($10) and Fast Shipping. Item: IH10 seems to work for all Ferrari models from 1967 to 1998. And I can say it fitted perfect in the clutch shaft pattern, but I had to add some adhesive tape for a proper fitting in the flywheel gear (see the pictures). Everything worked fine at once anyway. You will need a torque wrench to tight everything to the recommended specs: 13NM for the pressure plate and ring gear bolts (single clutch type) 24NM for the pressure plate and ring gear bolts (dual clutch type) I personaly tighted the bell housing/pumpkin nuts to 20NM, but this is what I did at my own risk because I couldn’t find anything about it. I repeat this is not my recomendation, it’s just what I did (however seems to work fine) Flywheel ring nut: I read in Fchat 206NM, but I can’t imagine how to use a torque wrench with an impact gun, or how to use a manual torque wrench to 206NM without causing the flywheel to spin. So this is what I did (not my recommendations): When trying to loosen the ring nut I noticed that the ½” impact gun was at it’s limit, so I used the same gun to the limit with some thread locker for tighting the nut. And one more thing needed is a press for installing the flywheel in the bell housing/pumpkin, yes I know it can be done with a hammer, and this is what I did for extracting it from the bearing (IMO safer than a press). But re-installing is a diffrent story, I didn’t like the idea of hammering the flywheel, so I went to a metal Workshop where pressed the flywheel into the bearing very carefully, using pieces of steel as a solid base. Just 5€ and entered smooth and safe. There is something that I want to mention about the allen bolt in the center of the flywheel ring nut, yeah, I know how many discusions have been opened due it, and here is my opinión (maybe very wrong). I think this allen bolt avoids the inner propeler shaft (the triple seals one) to travel outside more than needed pressing the tiny spacer, the same way the metal clip, near the triple seals, avoids that shaft to travel inside too much. IMO this allen bolt locks the inner shaft in it’s proper place.
It sure does take the fear out of owning these cars when you know you can fix it yourself. Nice job, and thanks for sharing! Interesting point about the allen screw in the flywheel bolt. Only thing is I'm not so sure that is what it's for. Don't you think would wear a hole in the end of the output shaft, and wear down the end of the screw if it was making contact? But then again, I guess not as they would both be spinning. I still think it's more of a lock screw to help keep the ring nut from backing out. But your theory does make a bit of sense.
Thanks for your kind words, Ernie. I really lost the fear of wrenching this car due to the great DIY information that guys like you and many other shared in Ferrarichat and several websites. Honestly, I couldn't afford the maintenance without it. About the allen screw, now we have the evidence; the Ferrari engineers used those sure leaking triple seals for lubricating the output shaft and avoiding wearing just kidding. I'm not sure neither, maybe you are right and it's a locking screw... but if so, how is the shaft hold in place? Anyway IMO the whole clutch/flywheel system is too complicated and is prone to failure, a weak point of this car. Have you heard of somebody adapting a clutch disc with springs from a different car, and a solid flywheel to a 348? a mod like this could fix a lot of problems if works fine.
Hi Moises You're really getting adventurous with your wrenching!!!! Keep up the good work. I also used Mad Dog clutches. I just got my car to Andrew Holman before it finally expired. He and I took the morning stripping it out and getting the newly greased flywheel back together. Its now taking another lot of serious abuse in its stride! Andrew really is a top guy. Highly recommended! With a new clutch, you've not got any excuse not to bring your 348 to the South of England for a meet...... Take care Clive
Hi Clive, Thanks for the kind words. You are very lucky in the UK because you have some nice places, like maddogclutches, with people who really know what they do at a fair price. In south of Spain (where I live) I haven't found a good garage for fixing my 348, despite the Ferrari dealer of Marbella (what a price). And I tried, but you need to see to believe how mechanicals do usually work here So after too many bad experiences I decided to go ahead with it. About the meeting, I'd love it, I will tell you the next time I go to London. Not sure to carry the 348 with me I want to see your car too, the last pictures are awesome. Regards
Hello I am new to this forum. I am replacing the clutch in my 91 348 and was reading your post , I am trying to find the 12 small seals and the large one. Tried the link to maddogclutchs nd could not get thru. Do you have any other sources for those seals ? Any help would be appreciated.
MD clutches has closed thier doors. An Oring supply place is where I would check. Sent using FerrariChat.com mobile app
