Accelerator Pedal Pad Lock Washer

[Hunter]

Judging standards is silent on the use of a lock washer with the pedal pad, but I notice the Standard Hardware Book lists a lock washer to be used with the accelerator pedal pad. Was this washer A-22217 (page 15 under spark and throttle controls) used throughout production?

Thanks for your help - Hunter

[d.j. moordigian]

After reading your question, I also looked it up. It is interesting, of the
ones I've seen or have, none have a lock washer( which means nothing ).

Up too the top, for another look. Lets hope somebody knows the answer.

[Bob C]

Originally Posted by d.j. moordigian

After reading your question, I also looked it up. It is interesting, of the
ones I've seen or have, none have a lock washer( which means nothing ).

Up too the top, for another look. Lets hope somebody knows the answer.

The two that come to mind that probably know the answer don't
post here anymore.

[Doug Clayton]

The lock washer was only used in 1928 on the accelerator pedal and the starter pedal - tough item to find if you need them.

[wrndln]

Doug,
Could you expand on the washer thing? I don't quite see how a washer would be used on the starter pedal unless it is the earlier offset starter type which I don't know much about. If you know the date the washer was eliminated, would you post it here? I have a Sept 28 roadster and a Late Nov special coupe. I hope they didn't have the washers.
Rusty Nelson

[d.j. moordigian]

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Originally Posted by Doug Clayton

The lock washer was only used in 1928 on the accelerator pedal and the starter pedal - tough item to find if you need them.

Thanks Doug,
Sure makes sense on the starter rod...it does have a gap when
the "button" is screwed down on the rod.

[d.j. moordigian]

Originally Posted by Doug Clayton

The lock washer was only used in 1928 on the accelerator pedal and the starter pedal - tough item to find if you need them.

Yep...just check the accelerator pedal....it also has a gap when screwed
down.

[Charles Reese]

1-1-28 Parts Price List shows 5/16 (1/16 x 37/64) (R.F.)

Would it be safe to assume the 5/16 is center hole; 1/16 thickness; 37/64 OD; “RF” raven finish?

[d.j. moordigian]

Charles,

That's the way I took it...the threads measure .312" (5/16").

[Doug Clayton]

Rusty -
I believe the washers were eliminated when the starter switch was changed from the early square style to the more rounded type in October/November 1928. The original washers I have seen were peculiar in the small outside diameter which is very close to the same diamter as the raised boss on the starter pedal and the underside of the accelerator pedal. Also, they had a noticible knurl on the outside edge, although there is no guarantee they were all made with the same knurl.

[wrndln]

Doug,
Do you know if they were split washers on the throttle stud?
Rusty

[d.j. moordigian]

The Hardware book uses the word " lock " in the description.

[Doug Clayton]

Rusty -
Yes, they are the split type lock washers

[Tom Wesenberg]

I've found the same thing as what Doug said, the washers were dropped when the switch shape changed.

[d.j. moordigian]

Doug,

Rusty and I have an issue with the size of this lock washer. Is the PPL size for
that lock washer correct or is it a typo? "37/64" (.578") is very large!

[Doug Clayton]

Okay, good question. I will see if I can find one quickly to measure. I suspect the correct outside diamter is 33/64" as the ones I have seen are just about the same O.D. as the raised boss on the 1928 starter pushrods.

[Doug Clayton]

Well, I spent a little time sifting through a box of lock washers. Found one with a 33/64" O.D. but that is too large when placed on the accelerator assy. I decided to follow up on a tip from Tom Moniz to use the washer for the steering column clamp to gas tank bolt. That one is a little smaller on the O.D. (7/16"), but close to the one on the accelerator/starter pedal. Somewhere, I have one on the starter pushrod, but there are too many boxes to find it quickly. Maybe, someone can measure the washer on an original car?

I did find a good way to sort through lock washers was to use a slightly rusty (no grease) left side engine splash pan! Made it really easy to pour them back into the box when I was done.

[Craig Lewis]

Interesting thread.
For the record that book does contain errors.
I've got in the habit to pencil in notes beside stuff if I'm positive it ain't correct.

[Tom Wesenberg]

I looked last night for my early pedal, but couldn't find it. While looking I did manage to break my spare original headlamp lens though.

Both my 1928 and 1931 Parts Price List show the same size, and the 1931 book lists 3 of the part number with a different suffix.

[Steve Plucker]

Originally Posted by Tom Wesenberg

I looked last night for my early pedal, but couldn't find it. While looking I did manage to break my spare original headlamp lens though.

Both my 1928 and 1931 Parts Price List show the same size, and the 1931 book lists 3 of the part number with a different suffix.

So that was what that thunder/sonic boom/yell sound was I heard coming from the east last night...sorry Tom.

Pluck