The Ford Barn

Pilotdave · 06-08-2025, 08:46 PM

I'm working to correct some issues with the front brakes in my Fordor. For background, I have installed cast iron drums and molded brake shoes. The drums were turned to be concentric with the hubs, and the shoes shaped to the drums. I've had some pulsing in the brakes recently that I would like to remove.

In pursuing this goal, I planning to check the concentricity of the drum to the center line of the hub. I'm using a Test Indicator that measures to 0.001".

This has led to a question: what is an acceptable amount of Total Indicated Runout? I have looked in several reference books but haven't found any information; it'd be great to locate some Ford specs....or some informed opinions!

Thanks very much for your help with this.

David

06-08-2025, 08:46 PM	#1
Pilotdave Senior Member Join Date: Oct 2010 Location: Grafton, MA Posts: 1,273	Brake Drum TIR I'm working to correct some issues with the front brakes in my Fordor. For background, I have installed cast iron drums and molded brake shoes. The drums were turned to be concentric with the hubs, and the shoes shaped to the drums. I've had some pulsing in the brakes recently that I would like to remove. In pursuing this goal, I planning to check the concentricity of the drum to the center line of the hub. I'm using a Test Indicator that measures to 0.001". This has led to a question: what is an acceptable amount of Total Indicated Runout? I have looked in several reference books but haven't found any information; it'd be great to locate some Ford specs....or some informed opinions! Thanks very much for your help with this. David