Question about Cab 12 Chevrolet FAT

[Phil Waterman]

Hi Niels

Could you confirm the diameter (ID) of the drums and how wide the braking surface is? With that I can start looking back through my parts replacement history and see if I can come up with what modern part numbers I have found and where I found the parts.

Couple of general observations about brake parts.
Most of the hardware springs clips etc are still available new.
Brake cylinders can be found NOS or New here in the states but I would go with finding used ones that can be sleeved with brass or stainless. My experience is that NOS cylinders only last 3-5 years before pitting. I've got some sleeved ones that are 25 years old though I generally replace the rubber cups and the hoses every 10 years.
I have never need to find brake shoes, though I have had old ones relined.

Your truck looks great, I think the FATs are the iconic CMP that most of us would secretly like to own. (I say secretly just in case my wife reads this, 3 CMPs on the road at once really should be enough.)

Cheers Phil

[Niels V]

Thank you guys.
I hope to take a look at the brakes in the coming weekend and will get the diameter and width then.
I will need a set of front wheel cylinders, (they are missing)
I my world the FAT is the iconic cmp, but that is mostly do to a Tamiya model kit

[RichCam]

Niels,

I sent you a PM with higher resolution .pdf files of the FGT brake schematics. f you can take a look at the attachments and send me back a list of the Part#s that you need information on, I can cross reference the FGT Part#'s with the Part Name Description in the Ford FGT-01 Spare Parts manual.

Hope it is not snowing yet where you are!

Richard

[Niels V]

Thanks Richard
What is the easiest way to get to the master cylinder, from the top og bottom?
I have found that I am missing a rod that goes across the top of forward part of the engine compartment just behind the radiator.

no way near snow yet its 13C here.

[Niels V]

I had a chance to measure the brake drums, they are 15 inch high and the braking surface is 2,5inch roughly ( I could not get the drum of)
From what I could see there was nothing inside the drums.


Is it possible to find a new wire guide/D towing eye? otherwise can any one take some closeup picture of one so I can recreate mine.
At the moment there is a normal one bolted on top of original one.

[Phil Waterman]

Hi Niels

Take a look at the photo from the parts book, note that the top and bottom shafts and rollers are the same part numbers. So you should be able to fabricate a new lower shaft based on the top shaft.

Bottom shaft was missing on my Patter 12 as well.

Looking at my log photos from restoring my Pat12 C60L it looks like the brakes front and rear are the same basic units so when you disassemble one of the rear brakes you should be able to check to see if the parts are interchangeable then you can start hunting parts based of an comparing to the rear. I have quite a few fairly hi resolution pictures of the front and rear brakes if you would like I can post them.

Cheers Phil

[Van Hove Herman]

Niels,
Here some pictures of my front towing clevis (D-eyes) left side.
GM was using a pin with round head and a washer with cotterpin on
the underside.Ford was using a hex bolt with castelated nut and cotterpin.
Hope this help.