turn signal cancellation mechanism

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texcarguy

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when I bought my E9, the turn signals wouldn't cancel...When I removed the Nardi wheel and hub, I found the problem..... the round "spacer" with the tang on it which "trips" the turn mechanism off, was not installed.

I purchased one from Maximillian... Unsure of exactly where to install, I could only assume that the "spacer" should be positioned with the "tripping tang" at 3:00, i.e., exactly in line with the little arm which moves toward the steering column when the turn signal is activated in either direction (of course, with the steering wheel in the wheels-straight-ahead position). Then, I'm guessing that the spacer itself is just held in the proper position by the torque on the nut which holds the steering wheel to the column.

although I tested a couple of times before buttoning everything back up, I now find that the turn signals only cancel in one direction, but not the other.

Has anyone had experience with this, and set me straight on the proper installation position of the spacer-ring with the cancelling tang on it?
 
turn signal cancel

I have the same problem - but have not investigated, but probably occurred when PO but on aftermarket steering wheel. What was the part number from Maximillian.

By the way - I am speculating that your e9 was the beautiful one from Texas two cars down from my Malaga coupe at the Vintage at the Vineyards (how many verona e9s with triple 40s are there in Texas?) - if so, you have a beautiful car.
 
V@V

That was me... sorry we didn't get a chance to chat. Just too many coupes... I was in heaven!

I'll look up the part number when I get home.... only about $11 I believe
Phil
 
I have the same problem, and with a Nardi wheel, although my Nardi wheel is from the 60s and most probably an option for the 2000 CS. I boght it when visiting the Nardi factory for restoration of my Iso Grifo steering wheel. I immediately spotted the wheel in the meeting room as being for the e9. I has just the same spoke design, and is about 40 cm in diameter. We had to install a round, brass ring for the horn function, and I then installed the turn signal cancelling/return cam as per the instruction manuals (blue books). It sometimes works 2 ways, but usually just one way, or recently not at all. Each time I remove the steering wheel, the cam comes out with the steering wheel. I then take if off with a pair of pliers and shove it onto the upper steering column.
The 0,3 mm clearance (0,012") is probably important. Adjustment at indicator switch rather than bending the cam as I first did.
 
The 3 o clock position is correct. But you may need to calibrate the distance from the latch to the catch from the blinker arm
The factory repair manual says that the latch should be 0.3mm from the catch on the indocator arm when the indicator is not on. You can easily calibrate the distance by bending the latch. To little play or actual tension and you´ll have trouble setting the indicator while still driving ahead. Too much distance and the latch might not "catch" the indicator stalks catch when returning.

To understand how the mechanism works or should work, take of the steering wheel, set the indicator and then turn the ring with the latch manually.

Once you´ve understood how it works, it´s easy and obvious to debug.

I once actually managed to install two latches at the same time (one was stuck to the wheel, the other to the shaft and I didn´t notice. Needed some more torque to tighten the nut and wondered why...
THAT made for some erratic indicator behaviour.... ;)
 
Hmmm...

I have a Nardi also, bought many years ago by the wife for my tii. I sold the tii, kept the wheel and got another hub since apparently the tii and E9 have different splines on the column.

My hub has the cancelling gizmo built in, and I don't use the factory steel cancelling washer/tab.

The position of the switch relative the column is adjustable (two phillips screws) while the upper and lower column trims are off.

I also cancel in one direction only. I've played and played with the alignment of the switch, and spacing, but I suspect the switch itself is a little buggered. The switch is not made to come apart... and I wouldn't recommend anyone take it apart.

I suspect that someone forced the turn signal stalk into position while they turned the wheel, somehow bending the mechanism internal to the switch. This is supported by the fact that the little finger that projects from the switch when activated, is not perpendicular to the switch housing.

I just live with it. Perhaps someone with deeper knowledge could provide an answer. It doesn't sound like it will come from this discussion. Anyone want to front it to Carl Nelson?
 
Perhaps you should change the complete unit. That would clarify whether the stalk is at fault. This reminds me to check on one of my cars where I know that the neutral position of the stalk is at 4 o´clock rather than 3 o´clock.
 
I have a fairly new Nardi wheel & hub on my CS. The hub has the cancelling tang built in, and one edge of it is marked "top". I forget where that positions the tang, though I'm sure it's not at "3:00" (eg, directly facing the switch).

The problem with putting it at 3:00 would be that any little wiggle of the wheel would cancel the signals, possibly prematurely. I'd think putting it at 9:00 would be ideal, since a) it would be L-R symmetric, and b) wouldn't trip the switch until you had turned the wheel somewhat.

When I installed my wheel, I had to put a couple of washers under the switch to space it back a bit. When it was simply screwed down, the cancelling tang was too high above it to make contact.
 
turn signal tang position

I DID try mine first at the 9:00 position, but that requires that the wheel be moved a full 180 degrees in a turn before cancelling. If you take note of steering wheel position during a turn, you'll see that, unless it is a tight turn, it doesn't go that far, so the cancel function works intermittently!
 
I've mounted various steering wheels onto my coupe at one time or another and they all have had the cancellating tab installed in the exact 3 O'Clock position and have never experienced any problems with their operations. The wheels installed have included the Nardi, Momo Prototipo, Alpina 4 spoke and the Petri 380mm CSL wheel.

Bert
72 3.5 CSi
88 M6
 
cancel tab

I believe, based on my install of the Nardi on my 2002tii and later to the 3.0CS, that the cancel tab is supposed to be mounted directly in line with the turn switch.

The little "finger" from the switch is spring loaded, so when a turn is indicated, it will "load up" against the cancel tab. Then you turn, the finger fully extends as the tab gets out of the way, and when the steering wheel returns to straight ahead the tab causes the switch to cancel.

That's my story and I'm sticking to it. Take off your hub and check it out.
 
Old thread but topical for me - I have sourced a vintage mahogany Nardi wheel with Petri-like spokes and I was hoping someone could post pics of how the turn signal cancel mechanism works, my hub does not appear to have one.
 
Hi Steve
If you get a chance posts some pictures of your wheel.Sounds cool!
Tim
 
tmason said:
Hi Steve
If you get a chance posts some pictures of your wheel. Sounds cool!
Tim
Click to expand...

I determined that I didn't need a cancellation mechanism (it's on the column already) but instead a horn ring which I took off the stock wheel and mounted to the Nardi hub and works great. Drove for several hours today in the spectacular weather with the new wheel in place, it's smaller than my Pertri (385 vs 400 mm), lighter, and thinner. More delicate and not as suitable for aggressive driving, but I don't do that anyway, and my friends that know the car prefer it to the Petri. I do also, more leg room, and retains the Petri look with similar spokes (polished aluminum vs. stainless in the Petri) with progressive sized holes which I love, but the mahogany makes it unique and accents the dash and door wood. Best of both for me. Pic:

IMG_0306.jpg
 
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