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EFV-8 Club Forum / General Ford Discussion / 1940 Ford Rear-Emergency Brake Assembly

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Discussion Topic: 1940 Ford Rear-Emergency Brake Assembly

40 Coupe

02-24-2012 @ 4:31 AM

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photo of retracting spring

40 Coupe

02-24-2012 @ 4:20 AM

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The brake retracting spring for the 40-48 style brake has the ends reversed, that is to say, the hook on one end is reversed (formed differently)from the hook on the other end. I notice you only have one end of the spring connected in your photo.
On the rear shoe the spring should be in back of the shoe and enter the hole on the shoe from the rear. On the front shoe the spring is in front of the shoe and enter the hole from the front. This will keep the spring away from the E-brake mechanism and allow the spring to be installed without binding.

supereal

02-21-2012 @ 2:49 PM

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You have that right (and thanks), Dan. My first encounter with a brake assembly, minus the shoe clips, showed me what can happen when just one small part is missing or incorrect. The clips keep the shoes from cocking against the drum, and it took me most of a day to get the rear drum worked off, a millimeter at a time. It became a test of man vs. machine, and the torch began to look good when we ran out of beer and appropriate language!

Stroker

02-20-2012 @ 4:55 PM

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While I really appreciate Supereal's succinct, and to the point responses, I'd like to share a personal experience with you. In 1956, I did a brake job on my big-sister's 38 Ford. New shoes,
drums turned, bearings pack'd etc. Since I had just gotten my "chauffeur's license" (today called a "CDL"), she let me drive her the 40 some miles to her dentist appointment. We were cruising along the Pasadena Freeway (first "Freeway" in California, now called the Arroyo Seco Parkway)
when the car started to drag (skid) the left rear wheel. Thanks to lots-o-on-board tools, I was
able to pull the wheel/drum and find the problem. The left brake assembly was full of parking brake cable! In my haste to "get-er-done", I substituted "generic" external snap rings for those "funky- looking" horseshoe originals, as our local parts store didn't have them, and I didn't want to drive the 25 miles to the nearest Ford dealer. The "crescent-shaped" arm came adrift, and wrapped around inside the drum with enough force to reel-in the entire parking brake cable from the right-hand brake. Thanks to "diagonal wire-cutting pliers", I was able to free things up enough to re install the left drum/wheel assy, and complete the dental mission, albeit about an hour late.

Moral: Don't substitute ANYTHING!

kubes40

02-20-2012 @ 3:18 PM

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Juergen,
If I was any kind of an expert, I would have looked a bit closer at the photo prior to posting it.
You are of course correct.
hey, I appreciate you keeping me on the straight and narrow. I goofed, and hopefully, didn't add confusion to this subject.
My apologies...
Mike

juergen

02-20-2012 @ 1:51 PM

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Mike, I hate to disagree with the 40 expert, but the crescent shaped lever where the hand brake cable goes is for the passenger side in your photo. The service bulletins show that the L shaped lever goes between the crescent lever and the brake shoe, thereby holding the L shaped lever in place. Note the dotten line for the L shaped lever as it goes underneath the crescent lever. You should not be able to see the L shaped lever slot fitting into the bung on the back of the lever.

kubes40

02-20-2012 @ 1:24 PM

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Richard, Here's a photograph of how things should be set up. If you still have questions, let me know and I'll help you out.
Mike "Kube" Kubarth

Old Henry

02-20-2012 @ 10:57 AM

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I'm not sure about that thing over the emergency brake lever on the right. I don't have that on my '47 but maybe it's unique to your '40 although I don't see it on the diagram for you brakes. It looks like on the diagram that the following brake clip should be holding both shoes to the backing plate: http://macsautoparts.com/early-v8-ford-mercury-brake-shoe-hold-down-clip-ford-passenger-51a-2125/camid/F30/cp/JS0R3CHL1113103/

P.S. Even though Ford does not call the hand brake either a parking brake or emergency brake - just a hand brake - I like to use the term emergency brake because I think of it that way since it is the only back up brake on the vehicel because the hydraulic brake system is not a dual system like modern cars. If it fails for any reason, the hand brake is all there is left. That's why I always keep it in top working order.

P.P.S. Your attached images are easier to work with if you stay within the size limits of the forum - maximum 1024 X 768. Even my fiber optic connection took a while to load yours. I think even mine may be a little oversize.

Old Henry
(The older I get, the better old looks.)

This message was edited by Old Henry on 2-20-12 @ 2:30 PM

supereal

02-20-2012 @ 10:03 AM

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From your picture, it looks like your brake assembly is OK, except the clip that holds the rear shoe to the backing plate seems odd and large, probably homemade. These clips are essential. If missing or wrong, removing the drum will be difficult or imposible. The parking (not "emergency") brake arm is kept in position by tension on the cable. Of course, the spring is attached to each shoe in the holes provided at the top of the shoes.

rdevarga

02-20-2012 @ 7:48 AM

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This is a photo of the driver's side rear brake assembly. I have not attached the brake spring yet.

Question 1: Does this look right? What keeps the Emergency Brake front shoe arm from coming off the pin to the rear shoe emergency brake arm (the J shaped arm under the cylinder)?

Question 2: Does the rear shoe arm rides in the steel clip (backing plate clip) as shown? The clip was handy for mounting although it does not allow the emergency brake arm to move freely.

Something does not feel right.

Thanks,
Richard deVarga

Richard deVarga
Austin Texas

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