1966 clutch cross shaft to frame hardware

[Gary B.]

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Thanks,


Gary

[Joe L.]

Re: 1966 clutch cross shaft to frame hardware

Can someone help me understand the description in the ‘66 JG about the outboard connection of the clutch cross shaft or Z bar to the frame. The JG text says:


“The outboard stud is secured to the shaft at the ball with two nylon bushings and a C-clip. The threaded end of the stud is mounted into a welded frame bracket and secured with a hex nut and a special washer. The lower part installs in a slot in the frame bracket and one of the upper tabs is bent against the nut to prevent rotation. [C 10-A]”

[ATTACH=CONFIG]116823[/ATTACH]


What I’m puzzled by is the “special washer” at the end of the second sentence in the JG. Photo [C 10-A] shows what appears to be a metal washer (a bit red or copper colored in the JG photo) against the outboard side of the frame bracket, which I assume is that special washer.


When I bagged and tagged the original hardware from my ‘66, there was no metal washer. And when I look at the hardware kits sold by Paragon, Corvette Central, and the last catalog from LIC, there is no mention or illustration of a metal washer. My bagged item include everything in the catalog photos of their rebuild kits. The ‘66 AIM does lists a “washer”, but the AIM washer is felt, and it goes on the inboard side of the frame bracket. So, nothing in the AIM corresponds to the JG description either. So, what is the “special washer” that the JG mentions and that is shown in the photo in the JG?


Thanks,


Gary

Gary-------


The "special washer" is the piece with the "90 degree" bend at the bottom and the two small tabs on the top right side. I don't think the conventional washer is supposed to be there. In fact, it's counterproductive as its thickness might prevent the the lower "90 degree" bend of the special washer from engaging the slot in the frame bracket.

[Leif A.]

Re: 1966 clutch cross shaft to frame hardware

Gary,
Joe is 100% correct. Not sure why the JG shows a picture with that washer between the frame rail and the "special" washer...it's not correct.

[Gary B.]

Re: 1966 clutch cross shaft to frame hardware

Thanks guys. That confirms to me that the reddish flat washer in the JG photo can’t be correct. Joe, I agree that the presence of that incorrect washer might prevent the lower tab of what the AIM calls a “washer special”, GM 3756326, from engaging in the slot in the frame bracket, thereby preventing the anti-rotation function and allowing the nut to loosen.

Gary

[Douglas L.]

Re: 1966 clutch cross shaft to frame hardware

Gary,

This diagram if from the 67 assembly guide - but should be the same for 66.

Clutch Cross Shaft Nut & Lociking Washter.jpg

[Keith M.]

Re: 1966 clutch cross shaft to frame hardware

Thanks guys. That confirms to me that the reddish flat washer in the JG photo can’t be incorrect. Joe, I agree that the presence of that incorrect washer might prevent the lower tab of what the AIM calls a “washer special”, GM 3756326, from engaging in the slot in the frame bracket, thereby preventing the anti-rotation function and allowing the nut to loosen.

Gary

I think you meant to say...must be incorrect??? or can't be correct?

[Gary B.]

Re: 1966 clutch cross shaft to frame hardware

Keith,

You are correct. I should have said “can’t be correct”. I edited my previous post.

Gary

[Gary B.]

Re: 1966 clutch cross shaft to frame hardware

[QUOTE=Douglas Lee (40617);932067]

[Don H.]

Re: 1966 clutch cross shaft to frame hardware

Gary-
first I'll say thank you for raising this issue.. It got me looking at my set up in my 64.. I found nothing but nut outside the frame bracket. But when I looked underneath the nut, with mirror and light, I could see the back of the L bend of the "special lock washer" through the slot.. The shaft was assembled with the special washer inside the bracket, buried into the felt washer. So, I loosened things up, and raised the cross shaft a little, and pulled the special washer, called a lock washer in ZIP catalog, outside the bracket. Tightened up, and bent down the ear a tad.. Question, do you have a washer of some sort abutting the bracket inside, against the felt washer?

[Gary B.]

Re: 1966 clutch cross shaft to frame hardware

Don,

None of the 63-67 AIMs show anything between the felt washer and the frame bracket. Nor do any of the rebuild kits from the catalog companies.

Gary

[Don H.]

Re: 1966 clutch cross shaft to frame hardware

OK, that works for me,,

[Leif A.]

Re: 1966 clutch cross shaft to frame hardware

Gary-
first I'll say thank you for raising this issue.. It got me looking at my set up in my 64.. I found nothing but nut outside the frame bracket. But when I looked underneath the nut, with mirror and light, I could see the back of the L bend of the "special lock washer" through the slot.. The shaft was assembled with the special washer inside the bracket, buried into the felt washer. So, I loosened things up, and raised the cross shaft a little, and pulled the special washer, called a lock washer in ZIP catalog, outside the bracket. Tightened up, and bent down the ear a tad.. Question, do you have a washer of some sort abutting the bracket inside, against the felt washer?

Don,
I can "see" why you asked this question. In Gary's original post picture from the JG it appears that there is a metal washer between the felt washer and the frame. If in fact that is the case...it's wrong, as well. No metal washer on either side of the frame, except the special/lock washer.
Probably not the best picture but here ya go anyways.

[Don H.]

Re: 1966 clutch cross shaft to frame hardware

OK Leif thanks,
that's what mine looks like now.

[Gary B.]

Re: 1966 clutch cross shaft to frame hardware

Don,
I can "see" why you asked this question. In Gary's original post picture from the JG it appears that there is a metal washer between the felt washer and the frame. If in fact that is the case...it's wrong, as well. No metal washer on either side of the frame, except the special/lock washer.
Probably not the best picture but here ya go anyways.

Leif,














The JG also shows a photo of the end of the rod with the swivel and the two jam nuts, clearly with a zinc finish. Exactly as shown in the AIM. Again, no mention of the possibility of regular thickness nuts.


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Gary

[Gary B.]

Re: 1966 clutch cross shaft to frame hardware

Just to bring two of the historical postings to this thread. These two from Wayne Midkiff and Michael Hanson.




Originally Posted by Wayne Midkiff (3437)
Are you aware there is a minor controversy with respect to jam nut size and position on the upper clutch rod (either side of the swivel) ? '65 TIM&JG says both thin 1/4"; others say one side thin / other side thick. I've seen (perhaps) unmolested originals with your configuration (thin forward, thick towards firewall).


Yup, I agree Wayne. For 63 and 64, both nuts were the thin/jam nut design that you mentioned. (also called out in all of the 63-67 AIM's). For 65, I think early cars still used the thin/thin configuration but a little ways into production, the upper, or rear nut, became a nut of conventional thickness. This continued through the 65 model. Some time in late 65 or early 66 production, BOTH upper and lower nuts were of conventional thickness. All of the 63-67 assembly manuals call for the thin (124829) nuts for upper and lower locations but that's just not the way it happened in production/real life.