The Ford Barn

old31 · 05-03-2016, 08:13 AM

What I thought to be bearing play turns out to be king pin play.

I tapped a wooden wedge between the brake backing plate and the king pin and the play stopped. It is a very, very little amount of play when the wheel is grabbed at the 12 and 6 o clock and wiggled.

Is it ok to leave in the play? Would this cause any high speed vibration?

If not, what is the fix?

Mitch//pa · 05-03-2016, 08:23 AM

Make sure the backing plate bolts are not loose.. This is also very common...you should be able to see the movement or feel it with your fingers while someone moves it
If the king pin play is that little I would not worry about it, just grease them up real good..
Modern car king pins are allowed some play and each vehicle has a fail replace me specification.

Tom Wesenberg · 05-03-2016, 09:58 AM

I'm using a temporary front axle assembly while I rebuild my original on my 28. The temporary has a lot of king pin play, as I can move the tire a couple inches by rocking it at top and bottom. It doesn't bother the steering and it also does NOT have the death wobble. I'll rebuild it when I finish the original axle.

old31 · 05-03-2016, 02:27 PM

OK, good glad to hear it.

I did tighten all of the backing plate bolts. Again, its a very slight movement, like a loose bearing.

Thanks Mitch and Tom.

BILL WILLIAMSON · 05-03-2016, 02:33 PM

I wobble a LOT when I try to walk. Is there a DANGER that I might be REPLACED????????????????
Bill Shakey

CarlG · 05-03-2016, 02:35 PM

Sponsored Links (Register now to hide all advertisements)

There is no replacement for Bill, shakey or not.

Patrick L. · 05-03-2016, 03:42 PM

Quote:

Originally Posted by BILL WILLIAMSON

I wobble a LOT when I try to walk. Is there a DANGER that I might be REPLACED????????????????
Bill Shakey

Nope ! I wouldn't think there would be such a replacement.

BILL WILLIAMSON · 05-03-2016, 09:36 PM

I'm GLAD to find out that LOOSE king pins DON'T cause "THE DEATH WOBBLE" Now, I can sleep tonight. The Dog "sez" I'm NUTS!!
Bill Zzzzzz

burner31 · 05-04-2016, 12:48 PM

Quote:

Originally Posted by BILL WILLIAMSON

I'm GLAD to find out that LOOSE king pins DON'T cause "THE DEATH WOBBLE" Now, I can sleep tonight. The Dog "sez" I'm NUTS!!
Bill Zzzzzz

Listen to the dog...
For the dog is wise...

05-03-2016, 08:13 AM	#1
old31 Senior Member Join Date: Jan 2016 Posts: 2,098	King Pin Play 31 Deluxe Roadster What I thought to be bearing play turns out to be king pin play. I tapped a wooden wedge between the brake backing plate and the king pin and the play stopped. It is a very, very little amount of play when the wheel is grabbed at the 12 and 6 o clock and wiggled. Is it ok to leave in the play? Would this cause any high speed vibration? If not, what is the fix?

05-03-2016, 08:23 AM	#2
Mitch//pa BANNED Join Date: May 2010 Location: Bucks County, PA Posts: 11,454	Re: King Pin Play 31 Deluxe Roadster Make sure the backing plate bolts are not loose.. This is also very common...you should be able to see the movement or feel it with your fingers while someone moves it If the king pin play is that little I would not worry about it, just grease them up real good.. Modern car king pins are allowed some play and each vehicle has a fail replace me specification.

05-03-2016, 09:58 AM	#3
Tom Wesenberg Senior Member Join Date: May 2010 Location: Mpls, MN Posts: 27,582	Re: King Pin Play 31 Deluxe Roadster I'm using a temporary front axle assembly while I rebuild my original on my 28. The temporary has a lot of king pin play, as I can move the tire a couple inches by rocking it at top and bottom. It doesn't bother the steering and it also does NOT have the death wobble. I'll rebuild it when I finish the original axle.

05-03-2016, 02:27 PM	#4
old31 Senior Member Join Date: Jan 2016 Posts: 2,098	Re: King Pin Play 31 Deluxe Roadster OK, good glad to hear it. I did tighten all of the backing plate bolts. Again, its a very slight movement, like a loose bearing. Thanks Mitch and Tom.

05-03-2016, 02:33 PM	#5
BILL WILLIAMSON Senior Member Join Date: Dec 2010 Location: FRESNO, CA Posts: 12,560	Re: King Pin Play 31 Deluxe Roadster I wobble a LOT when I try to walk. Is there a DANGER that I might be REPLACED???????????????? Bill Shakey __________________ "THE ASSISTANT GURU OF STUFF"

05-03-2016, 02:35 PM	#6
CarlG Senior Member Join Date: Nov 2010 Location: Anchorage, Alaska Posts: 9,115	Re: King Pin Play 31 Deluxe Roadster Sponsored Links (Register now to hide all advertisements) There is no replacement for Bill, shakey or not. __________________ Alaskan A's Antique Auto Mushers of Alaska Model A Ford Club of America Model A Restorers Club Antique Automobile Club of America Mullins Owner's Club

05-03-2016, 09:36 PM	#8
BILL WILLIAMSON Senior Member Join Date: Dec 2010 Location: FRESNO, CA Posts: 12,560	Re: King Pin Play 31 Deluxe Roadster I'm GLAD to find out that LOOSE king pins DON'T cause "THE DEATH WOBBLE" Now, I can sleep tonight. The Dog "sez" I'm NUTS!! Bill Zzzzzz __________________ "THE ASSISTANT GURU OF STUFF"