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Old 10-27-2019, 07:55 AM   #21
Kurt in NJ
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Default Re: Make it Stop! ('46 Deluxe)

Some offshore production wheel cylinders have the holes drilled wrong, sometimes the bleeding port is not drilled to the top of the cylinder trapping air ---- just because the part is new doesn't mean it is good, I learned to take apart new wheel cylinders for inspection
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Old 10-27-2019, 01:12 PM   #22
FortyNiner
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Default Re: Make it Stop! ('46 Deluxe)

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Some offshore production wheel cylinders have the holes drilled wrong, sometimes the bleeding port is not drilled to the top of the cylinder trapping air ---- just because the part is new doesn't mean it is good, I learned to take apart new wheel cylinders for inspection
Fair point. The wheel cylinders were from an old hot rod builder who was emptying his shelves. Not sure of the origin beyond his garage. One of them was defective - the bleeder threads wouldn't seal.
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Old 10-27-2019, 01:13 PM   #23
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Default Re: Make it Stop! ('46 Deluxe)

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When you adjust the brake cams do have some drag to each shoe.
Yup. Played with the cams to do this.
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Old 10-28-2019, 08:47 AM   #24
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Default Re: Make it Stop! ('46 Deluxe)

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Fair point. The wheel cylinders were from an old hot rod builder who was emptying his shelves. Not sure of the origin beyond his garage. One of them was defective - the bleeder threads wouldn't seal.
If those wheel cylinders sat around on a shelf for any length of time they may have attracted moisture inside and the pistons don't move smoothly or one side may be stuck in position. Did you take them apart and inspect them inside before you installed them? If you are not sure of the origin of those cylinders maybe they were there due to them being defective?

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Old 10-28-2019, 10:33 AM   #25
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Default Re: Make it Stop! ('46 Deluxe)

Arcing the shoes to the drums will make a huge difference. Since I don't have anyone with the proper machine nearby, I use a sanding block with 80 grit on it to sand off the high spots of the shoes. Then check again after a long drive. It's gotta be better than nothing.

You say that you adjusted the cams. Are your lower pivots nice and loose to allow the shoe to move properly? I bought some new shoes from Carpenter (mine were for a 40 but might have the same problem with shoes for other years) that were too thick of metal at the pivot point. The brass pivots were thinner than the shoe, so the clamping bar grabbed the shoe and wouldn't let it turn like it needed. I had to grind the shoe thinner at that spot to let the pivot work.
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Old 10-28-2019, 12:10 PM   #26
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Default Re: Make it Stop! ('46 Deluxe)

The fellow who sold me the cylinders was reputable and I didn't disassemble them before installation. That's part of my trusting nature, I suppose. Bear in mind, the brakes do work well - but only after a few pumps on the pedal.

All the under drum mechanical stuff seems happy. The shoes move as they should and the pivot points free.
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Old 10-28-2019, 07:08 PM   #27
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Default Re: Make it Stop! ('46 Deluxe)

There is a likelihood that your drums might be too far oversize, just because new linings go in doesnt meant it will work, standard linings off the shelf might not work.
Also try some speed bleeders and dont push the pedal all the way to the floor when bleeding do it nice and slow.
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Old 10-29-2019, 11:26 AM   #28
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Default Re: Make it Stop! ('46 Deluxe)

I would suggest measuring the diameter of the drums. If they are too far worn you will not have enough stroke to push the shoes out the first pump.. In that case usually a second pump will get brakes.

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