64 accelerator arm groundstrap

[Dan H.]

Hi all, would like clarification on the ground strap on my 64 accelerator. There was a discussion at the Bend regional about whether the ground strap was mounted above or below the ignition wire bracket. Also, that is had a 'star' washer on the accerator arm mounting screw. The 64 AIM shows it ontop of the wiring bracket with no star washer at arm mounting. Checked under arm mounting point and no trace of ever having had a star washer. Thanks in advance!
Dan

[Doug F.]

Re: 64 accelerator arm groundstrap

my 64 doesn't have the star washer either, it's always best to go with the AIM

[Stuart F.]

Re: 64 accelerator arm groundstrap

Dan;

Not certain if my 63 is the same, but I have had to change it often enough to become quite intimate with it. Mine has always been on top of the plug wire bracket (which again makes sense as to how often they need replacement), and I never had a star washer on the Accelerator arm.

Stu Fox

[Wayne M.]

Re: 64 accelerator arm groundstrap

my 64 doesn't have the star washer either, it's always best to go with the AIM

To All -- have 3 original '65 accel arms; none have any evidence of having been scored by a toothed washer, but then if the washer was to be between bolt head and the strap terminal end, then no marks would end up on the arm, right ?

The '65 TIM&JG calls for an external toothed washer -- how about the '66 & '67 manuals ?

In fact, I can't find any of the braided copper grounding strap installation instructions in my '65 AIM (help , need UPC & sheet #'s).

[Chuck G.]

Re: 64 accelerator arm groundstrap

In fact, I can't find any of the braided copper grounding strap installation instructions in my '65 AIM (help , need UPC & sheet #'s).

Look in the options area under Radio. U something or other.

The ground strap is part of the radio noise supression package.

Chuck

[John D.]

Re: 64 accelerator arm groundstrap

Hi Dan, No star washer. JD

[Wayne M.]

Re: 64 accelerator arm groundstrap

Thanks, Chuck -- wasn't looking hard enough; it's on UPC 69, Sht A4 in the '65 AIM.

But this AGREES with what most are reporting --- NO lock washer between ground strap and bolt on the accel. arm. All other locations require it, though (motor mount, exhaust pipes, #1 LH body mount, P.Ant ground strap.

[Timothy B.]

Re: 64 accelerator arm groundstrap

My 63 never had a star washer and I believe I was the first to turn that bolt. The bolt is a self starter 1/4" thread with indented 3/8 socket head and has no markings on the head, it's about 1/2" long.

My 67 has a different bolt that's 1/4" thread and indented head about 3/8" long and it takes a 7/16" socket. This bolt has RBW and a captured star washer that looks exactly like the 121753 star we were talking about just a few days ago on the ballast bolt. The bolt part # call out in the AIM is different than 63 and I believe the picture shows a star washer but no part # for the star. I believe I am the first to this bolt also.

The 1967 AIM shows the ground strap under the bracket, that's how I put mine back but the original was gone so I can't say how it was originally.

Can anyone tell me why a ground at this location??

[Stuart F.]

Re: 64 accelerator arm groundstrap

Tim;

To frustrate you every time it breaks and, sometimes, make the throttle hang.

Stu Fox

[Doug F.]

Re: 64 accelerator arm groundstrap

[quote]Can anyone tell me why a ground at this location??
i always figured anti static, but could be way wrong

[Timothy B.]

Re: 64 accelerator arm groundstrap

Stu,

Is the ground strap on your 63 the wide one? I have been looking for one like that. I guess all metal is grounded back the the engine then to battery -

[Stuart F.]

Re: 64 accelerator arm groundstrap

Tim;

I'm probably not the one to address your concern as to what is or is not the right width. I've changed mine so many times over the years I forgot. Right now I have a 3/8" wide strap on mine, and it is working well. It's lasted a number of years already w/o any hangups or breaks. I believe there was some discussion of the width recently in another thread. One thing I can say, the lug used on the manifold/plug wire bracket end is the correct width because it fits nicely in the bracket's channel so as not to rotate when you tighten the bolt.

Stu Fox

[Mike M.]

Re: 64 accelerator arm groundstrap

Hi Dan, Nice car! Good meeting you in Bend.
Glad you raised the question.
As we discussed, there were running changes in the attachment configuration at the bracket, the direction and attachment at the lever (apparently to better clear the linkage and minimize breakage) and the washer used.
I thought the changes were listed at the bottom of the page in the '64 AIM, but, I can't put my hands on my copy, it may have also been listed in the '65. Timothy's description is correct for '66 & '67.
Hopefully, someone can research and confirm.
HaND

[Dan H.]

Re: 64 accelerator arm groundstrap

Thanks Mike, I checked my 63 and 64 AIM and the accelerator detail is the same with no revisions. Guess I need to buy a 65 AIM to catch later changes, but my 64 AIM still shows the ground strap on top of the wire support bracket and no 'star' washer. Mine is a Mar 64 car so probably won't show the late changes.
Dan

[Timothy B.]

Re: 64 accelerator arm groundstrap

I need to make a correction, the 1967 AIM DOES show a part # 138489 for the star washer at the lever and a part # 106962 for the screw that holds the ground to the lever. I am certain the screw on my 67 has never been off and it's like I described above with the washer captured.

I can post a picture if anyone is interested.