328 Weird scraping noise when I turn the wheel - Ferrari Life
 
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post #1 of 14 Old 03-31-2014, 02:20 PM Thread Starter
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Weird scraping noise when I turn the wheel

Just yesterday I have started hearing a weird metal-on-metal scraping noise when I turn the steering wheel. I've isolated it to coming around the switch gear/stalks. It's almost like there's some thin metal [contact] rubbing on another metal piece as I turn the steering wheel. Yes, I can feel it as well as hear it.


Steering action is otherwise normal and not binding in anyway.


All switches/stalks work perfectly, both electrically and mechanically.


Unfortunately, I do not have the needed ring-nut socket to get the hub off so I haven't been able to proceed farther...


Any suggestions or comments?

- Jeff
- 1987 Ferrari 328 GTS #71403
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post #2 of 14 Old 03-31-2014, 05:55 PM
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post #3 of 14 Old 03-31-2014, 06:13 PM Thread Starter
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Thanks, but which size is the one for the steering wheel hub? Haven't been able to find a reference. I can measure, of course, so what is the right way to make the measurement? Outside diameter?

- Jeff
- 1987 Ferrari 328 GTS #71403
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post #4 of 14 Old 03-31-2014, 08:21 PM
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baum fr105 is steering wheel tool

FR105 STEERING WHEEL GROOVE NUT SOCKET - 38mm
Use to remove and install wheel hub ring nut.
Models: All since 1974
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post #5 of 14 Old 03-31-2014, 09:10 PM Thread Starter
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Thanks. Was having problems with my phone opening the PDF, thanks for the part number.

- Jeff
- 1987 Ferrari 328 GTS #71403
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post #6 of 14 Old 03-31-2014, 09:57 PM
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Jeff- Check the plastic covers over the steering column before pulling the wheel. You might try removing them and see if the noise goes away.

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post #7 of 14 Old 04-01-2014, 04:21 AM
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Quote:
Originally Posted by TacElf View Post
I've isolated it to coming around the switch gear/stalks. It's almost like there's some thin metal [contact] rubbing on another metal piece as I turn the steering wheel. Yes, I can feel it as well as hear it.
You're hearing feeling the horn contact ring. It may have broken, but more likely it's just a bit dry from age. Once you get the wheel off, it will be obvious as to the problem. (Disconnect battery first, as the horn will go off when the little wire that you'll see under the horn button is removed and naturally touches ground.)

Once the ring nut is removed, you may need a helper to get the wheel off of the tapered shaft. Often it is stuck! A sharp smack to the center shaft whilst you pull back on the wheel usually works. A puller can be used, although extreme care must be utilized to avoid marking the wheel or hub.

Ring nuts are measured by the o.d. of the nut.

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post #8 of 14 Old 04-01-2014, 08:03 AM
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I had a similar situation to that on my 308. My admittedly simple fix was to (judiciously) shoot a little WD40 up under the metal part of the steering column where the wheel bolts to.

i.e. there's an aluminum cylinder that the wheel bolts to. At the bottom of this cylinder you can sneak the red nozzle of a WD40 can under the lip and give it a few squirts if you can tell where the scrapping is coming from. Admittedly, it's not the "right" way to do it but it worked for me and didn't require dismantling the column.
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post #9 of 14 Old 04-01-2014, 08:51 AM Thread Starter
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Thanks all. Ordered up the tool and will get to this as soon as it arrives.

- Jeff
- 1987 Ferrari 328 GTS #71403
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post #10 of 14 Old 04-01-2014, 06:32 PM
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I had a metal scraping noise when turning the steering wheel on my '86 328. Turned out the steering lock mechanism was loose and retaining bolt was missing.
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post #11 of 14 Old 04-03-2014, 09:09 PM Thread Starter
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Ring nut socket arrived in record time, but alas all is not so easy: Wheel won't come off even with some solid raps on the center shaft and someone pulling on the wheel at the same time. Looks like I'll have to take off those 6 little allen-head screws, remove the steering wheel, then use a puller to get the column off. Bummer.

- Jeff
- 1987 Ferrari 328 GTS #71403
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post #12 of 14 Old 04-04-2014, 04:09 AM
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As I eluded to earlier...Just take your time with the puller. And now you may have to deal with the allens that refuse to break free without rounding. Another area of potential fun.

Call me if you need a hand, Jeff.

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post #13 of 14 Old 04-04-2014, 07:33 AM Thread Starter
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Most of the allen's came off just fine. Only one was being stubborn. Happily, these are easy to source and replace. Car looks weird w/o a steering wheel...


Hey David, once everything is back together, what's the right torque on the ring nut?

- Jeff
- 1987 Ferrari 328 GTS #71403
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post #14 of 14 Old 04-04-2014, 05:21 PM Thread Starter
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Puller made short work getting the hub off. Barely had to tighten things down, and off it popped. Ground ring was covered in gunk and the L-shaped contact was skipping over it - that's where the scrunching sound was coming from. Cleaned it all off with contact cleaner/lubricant (plastic safe) and a small eraser I cut to fit. Even today, erasers make perfect contact cleaners just like they did for PC cards.


I do know I'll eventually need to make use of Verell's rebuild service at some point in the future. There's cracks beginning to form at the base of the switch stalks. Perhaps next winter, as it doesn't look bad yet - mostly on the wiper stalk.

- Jeff
- 1987 Ferrari 328 GTS #71403
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