E brake

Discussion in '1947-1954' started by Mathias Mäkynen, Apr 8, 2021.

  1. Mathias Mäkynen

    Mathias Mäkynen Member

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    68EFB679-FD18-4F56-BEEC-08DC084BC2F1.jpeg B04003F0-1689-4677-9CD8-6526D522D338.jpeg 141175F8-5BD1-44C6-A550-6CC0DCC81380.jpeg Hi! I really need some help, I bought my first Chevy 3100 truck some months ago.
    for making it legal to drive in Sweden I need an e brake.

    I think there is some parts missing in the rear drums for attaching the brake wire.

    what parts do I need or missing?
    Where to find those parts?
    It’s an chevy 3100 1947
     
  2. Bill Hanlon

    Bill Hanlon Member

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    You may have a '47 Chevy 1/2 ton, but that isn't a '47 Chevy brake system. More likely a mid '60s or later car complete rear axle. Maybe Evan can identify it.

    Picture below is from late 40s to early 50s 1/2 ton GMC ebrake system which used the same parts as your Chevy.

    upload_2021-4-8_8-46-3.png
     
  3. Mathias Mäkynen

    Mathias Mäkynen Member

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    Thank you! Hopefully some one can help me identify what I got.
    The setup for the e brake wire seems to be the one on the picture you added.

    just need to know what’s missing in the drum for the wire to pull on those brake pads

    or if someone has any other idea of how I could do?
     
  4. Mathias Mäkynen

    Mathias Mäkynen Member

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    2DD94A70-4C13-4B7A-8196-203186B9A539.jpeg Drum looks like this if it’s any help
     
  5. Bill Hanlon

    Bill Hanlon Member

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    The piece to pull on the brake shoe will be specific to the rear brakes (most likely late 60s GM cars), not your 47 truck. Look for identifying numbers on your differential or axle tubes. My '52 GMC came to me with a GM 10 bolt rear end. I traced its origin to a 1967 Chevy Camaro. Post a picture of the center part of the differential from the rear of the truck.
     
    Last edited: Apr 8, 2021
  6. Mathias Mäkynen

    Mathias Mäkynen Member

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    Here is some pictures that I had in my phone, I can look closer tomorrow and see if I can find more numbers anywhere 0E77FB7E-4A7C-4BA1-82B2-56C0E535FF32.jpeg 0FD7962F-A98D-4549-800C-9E270EF80EA4.jpeg 98749306-352E-473E-87D1-990973F4F986.jpeg B7968324-CDB3-465D-B9C0-A4F8551F7596.jpeg
     
  7. Mathias Mäkynen

    Mathias Mäkynen Member

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    06A09547-7CA0-4B4D-BC08-FB07C92A3AF3.jpeg 9FFC2BE9-B017-4338-8EE3-22BD6FF2C883.jpeg Here are som more number I find on the truck
     
  8. Bill Hanlon

    Bill Hanlon Member

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    Your G248 is the casting date of July 24, 19x8. Given the 5 lug bolt pattern for mounting the wheels that would be 1958, 68, 78, etc.

    Leave out 1958 because those brakes did not have self adjusters.

    I've only found one reference to casting number 1254388 on line, and it had a casting date of H270 (August27, 19x0). Again, 1960 would be too early for self adjusting brakes, so it would have been at least 1970,
     
  9. Mathias Mäkynen

    Mathias Mäkynen Member

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    Thank you so much! But with all that information, is it possible to tell from what car I comes from?
     
  10. Bill Hanlon

    Bill Hanlon Member

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    Not yet, but I'm still looking. If I don't find something soon, I'll take a rear brake drum off of my truck (it has a '67 Camaro rear end) and take some pictures for you, me and hopefully others on the forum to look at. Maybe there is enough similarity that my rig will work with yours.
     
  11. Mathias Mäkynen

    Mathias Mäkynen Member

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    that sounds great! Really appreciate all the help :)
     
  12. Mathias Mäkynen

    Mathias Mäkynen Member

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  13. Bill Hanlon

    Bill Hanlon Member

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    Took some pictures of mine that may help. Mine is a complete 1967 Camaro 10 bolt rear end, brakes and all. It was already installed when I bought the truck, so I don't know a lot about it.

    This picture is of the stock GMC 3/4 ton e-brake bellcrank that is about 6 inches behind the cab. I do not know the origin of the cable or the attaching hardware. The bare cable goes towards the rear about 2 feet and ...

    [​IMG]
     
  14. Bill Hanlon

    Bill Hanlon Member

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    ... enters a sheath being held by this bracket, which I am pretty sure is not stock '52 GMC. This picture was taken upwards from below the truck. The sheathed cable continues about 2 feet towards the rear of the truck and ....

    [​IMG]
     
  15. Bill Hanlon

    Bill Hanlon Member

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    ... the sheath connects to the backing plate (sorry about the fuzzy focus) while ....
    [​IMG]
     
  16. Bill Hanlon

    Bill Hanlon Member

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    ... the stranded cable goes inside the backing plate and into a spring heading ...

    [​IMG]
     
  17. Bill Hanlon

    Bill Hanlon Member

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    ...across to behind the ...
    [​IMG]
     
  18. Bill Hanlon

    Bill Hanlon Member

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    ... rear brake shoe. I can't see where the cable connects, but when you stomp on the e-brake pedal the "parking brake lever extension" (also known as the link bar) moves towards the front, applying the front brake shoe. The rear shoe does not move.

    [​IMG]
     
  19. Bill Hanlon

    Bill Hanlon Member

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    I'll also post these pictures of the brake drum, because I think the max diameter of mine is the same as yours. May help to identify the brakes. The shoes are 2" wide. Bolt pattern is 5 x 4 3/4".
    [​IMG] [​IMG]
     
    Last edited: Apr 13, 2021
  20. Mathias Mäkynen

    Mathias Mäkynen Member

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    Thank you so much! I have been trying to identify my brakes but it’s hard.

    Is there anyone who can tell if the hand brake lever inside the drum is the same for all drums with the same size?
     

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