Tom_S Posted October 19 Report Share Posted October 19 Learning a lot as I slowly move through this task. I got a brake total overhaul kit and had to order a set of cylinder/shoe push rods because the old brakes (original, I’m told!) had them riveted to the shoe. The new set came with long and short ones. The vendor told me to put the long ones on the front shoe, short ones to the back shoe. Not only are the pins different lengths, but the end that sits in the cup is shaped differently. The long pin seats firmly all the way down in the cup, but the short one has a shoulder that prevents it from fully seating in the cup. All of the force will be applied to the shoulder. Is this normal, or could the short (shouldered) ones be wrong? (I have some photos but I can’t seem to upload them from my iPhone 😠) Quote Link to comment Share on other sites More sharing options...
Saskwatch Posted October 19 Report Share Posted October 19 41 minutes ago, Tom_S said: (I have some photos but I can’t seem to upload them from my iPhone 😠) I had the same problem, learned from this forum to …… take a screenshot of your picture, then downsize said screenshot, should result in successful upload 👍 Quote Link to comment Share on other sites More sharing options...
Los_Control Posted October 19 Report Share Posted October 19 (edited) 59 minutes ago, Tom_S said: The new set came with long and short ones. The vendor told me to put the long ones on the front shoe, short ones to the back shoe. Not only are the pins different lengths, but the end that sits in the cup is shaped differently. I can only say I have heard of the different length pins, best is to just reuse your originals if you have them .... on the new wheel cylinders. Automotive brake shoes consist of a primary and secondary shoe. The primary brake shoe is the front shoe and normally has a slightly shorter lining than the secondary shoe. The secondary shoe is the rear shoe and has the largest lining surface area. Just from a quick google search .... I once put the long shoes on the front and got my butt chewed out for it .... they go on the rear. For the photo issue .... go into settings on your device, I use a android phone to take photos .... they are naturally set to the highest resolution for the best quality .... just turn down the resolution so the photos will fit on the forum ... or use a image program to resize them .... easier to just turn down the image resolution before taking the photo. Edited October 19 by Los_Control Quote Link to comment Share on other sites More sharing options...
Tom_S Posted October 20 Author Report Share Posted October 20 here are the pins I have Quote Link to comment Share on other sites More sharing options...
Tom_S Posted October 20 Author Report Share Posted October 20 Short pin in wheel cylinder cup. Quote Link to comment Share on other sites More sharing options...
Tom_S Posted October 20 Author Report Share Posted October 20 3 hours ago, Saskwatch said: I had the same problem, learned from this forum to …… take a screenshot of your picture, then downsize said screenshot, should result in successful upload 👍 Thanks! I made that work for these photos (above) Quote Link to comment Share on other sites More sharing options...
Saskwatch Posted October 20 Report Share Posted October 20 Great ! Thank you for the pics AND Thank you Keithb7 👍👍 Quote Link to comment Share on other sites More sharing options...
Dodgeb4ya Posted October 21 Report Share Posted October 21 On 10/19/2024 at 3:26 PM, Los_Control said: I can only say I have heard of the different length pins, best is to just reuse your originals if you have them .... on the new wheel cylinders. Automotive brake shoes consist of a primary and secondary shoe. The primary brake shoe is the front shoe and normally has a slightly shorter lining than the secondary shoe. The secondary shoe is the rear shoe and has the largest lining surface area. Just from a quick google search .... I once put the long shoes on the front and got my butt chewed out for it .... they go on the rear. For the photo issue .... go into settings on your device, I use a android phone to take photos .... they are naturally set to the highest resolution for the best quality .... just turn down the resolution so the photos will fit on the forum ... or use a image program to resize them .... easier to just turn down the image resolution before taking the photo. Many 1946-49 MoPars and even earlier cars used both short and long lined shoes as original. On these fixed anchor Lockheed non energized brakes the short lining was placed on the rear....long lining to the front. Replacement linings these days are mostly all the same longer linings on all the shoes. 2 Quote Link to comment Share on other sites More sharing options...
desoto1939 Posted October 21 Report Share Posted October 21 On 10/19/2024 at 6:26 PM, Los_Control said: I can only say I have heard of the different length pins, best is to just reuse your originals if you have them .... on the new wheel cylinders. Automotive brake shoes consist of a primary and secondary shoe. The primary brake shoe is the front shoe and normally has a slightly shorter lining than the secondary shoe. The secondary shoe is the rear shoe and has the largest lining surface area. Just from a quick google search .... I once put the long shoes on the front and got my butt chewed out for it .... they go on the rear. For the photo issue .... go into settings on your device, I use a android phone to take photos .... they are naturally set to the highest resolution for the best quality .... just turn down the resolution so the photos will fit on the forum ... or use a image program to resize them .... easier to just turn down the image resolution before taking the photo. If you have the lockheed brake system with the step bores setup in the cylinders the factory setup is having the longest lining on the front of the drum and the short lining on the rear of the drum. This is how my service manual shows this on my 1939 Desoto. When you put the linings on the other way you are reffering to a Bendix brake system that has the same size pitson in the wheel cylinders. Chrysler does the opposite because of the step bore system and they are not equalized system. Rich Hartung 2 Quote Link to comment Share on other sites More sharing options...
Tom_S Posted October 21 Author Report Share Posted October 21 1 hour ago, Dodgeb4ya said: Many 1946-49 MoPars and even earlier cars used both short and long lined shoes as original. On these fixed anchor Lockheed non energized brakes the short lining was placed on the rear....long lining to the front. Replacement linings these days are mostly all the same longer linings on all the shoes. My OP didn't address the length of the lining on the shoes as all 8 shoes I received are identical. So I was just merrily going along believing that I have the right shoes. I'm hoping that I don't have to have both short and long linnings? What I am specifically worried about is the mating of the pin and cup in the replacements that I received. The longer pin seems to be fine. But, the short pin, similar to the one second from the left in your photo, does not seat into the cup. That shoulder ring at the tip of the pin is too large to allow the pin to fully seat in the cup (see the photo I posted above). This has the effect of making the short pin the same length (or even longer!) than the long pin. Do I have the wrong pin? Do I need to get a different pin or cup, or both? I hope to hear from the supplier on Monday and maybe he will provide a solution. Quote Link to comment Share on other sites More sharing options...
Dodgeb4ya Posted October 21 Report Share Posted October 21 Yes I read your post and understood it.🙂 Quote Link to comment Share on other sites More sharing options...
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