Shoes Installed Correct?

[atkinson40]

I'm trying to chase down why I loose fluid.   I see no leaks outside the drums on the lines, so am checking the cylinders. 

 

Good thing is, I see no wetness on the right side.    But, did I put the shoes on correct the last time I worked on them?

Edited August 5, 2024 by atkinson40

[atkinson40]

14 minutes ago, atkinson40 said:

I'm trying to chase down why I loose fluid.   I see no leaks outside the drums on the lines, so am checking the cylinders. 

 

Good thing is, I see no wetness on the right side.    But, did I put the shoes on correct the last time I worked on them?

 

 

OK, So I think I have them correct.

[datzenmike]

On 8/5/2024 at 11:53 AM, atkinson40 said:

I'm trying to chase down why I loose fluid.   I see no leaks outside the drums on the lines, so am checking the cylinders. 

 

Good thing is, I see no wetness on the right side.    But, did I put the shoes on correct the last time I worked on them?

 

I think they should be swapped to take advantage of the servo effect. If the other side is the same the brakes will work better backing up. The right shoe lining should be clocked around clock wise with it closer to the bottom the left side the lining closer to the top. If the other side is correct the brake will work better on the other side and pull that direction.

 

 

Below is correct for left side and counter clockwise rotation. Some sets of shoe lining positions are equally identical, then it doesn't matter.

[Stoffregen Motorsports]

Does it have a power brake booster? It could be leaking through the booster into the engine. Or dripping down the pedal.

[atkinson40]

On 8/8/2024 at 8:48 AM, Stoffregen Motorsports said:

Does it have a power brake booster? It could be leaking through the booster into the engine. Or dripping down the pedal.

 

Yes it has a power booster.   I found the leak on the passenger rear slave.   I bought and replaced it.  I also found the part #22 in the attached to be worn and not staying on.

 

Is there any reason why this link part will not work.  I can't find a kit for a 72 620.  I only need #22.

 

https://www.amazon.com/Carlson-Quality-Brake-Parts-H4020-2/dp/B000Q0CW9Q/ref=sr_1_5?crid=1TT9NZ8IPNXEE&dib=eyJ2IjoiMSJ9.aAom6gBdvJysteMZ6NlO4xzrPD_c4pzb8LDA6S4Fx-tAfs3ln0skXpvJqowYFx4mFvq5MIGh6nQJBHQorLB9Gz_VH3cSiILA9vqj_kl9BMXg3sQY39vyJWKJFictag4Y_ls7nWDF3GRfP6DocBo4L1n1RPAj9aJLjwRzNqTOM3sH8goTrDgU9zRJEnC2qbTqH7SKbX8teuwoqxedmlgmW2U4YnAH3lcjfeMa51la2ST3I51t_nkFbCNtEn-oL6JC6rJ3fgXFhh6682podFaJdVJIna8JpssbZ5sfqIfPe0A.alZnC8EVM43irm8kFVKTp_cO3GF9FEFHD4dNInMriAE&dib_tag=se&keywords=1972+datsun+620+brake+hold+down+clip&qid=1723328322&s=automotive&sprefix=1972+datsun+620+brake+hold+down+clip%2Cautomotive%2C136&sr=1-5

Edited August 10, 2024 by atkinson40

[Stoffregen Motorsports]

All of those brake hardware kits are pretty universal. Bendix made almost all of the drum brakes in that era, so it stands to reason that all of the hardware would be the same.

[atkinson40]

On 8/6/2024 at 2:44 PM, datzenmike said:

 

I think they should be swapped to take advantage of the servo effect. If the other side is the same the brakes will work better backing up. The right shoe lining should be clocked around clock wise with it closer to the bottom the left side the lining closer to the top. If the other side is correct the brake will work better on the other side and pull that direction.

 

 

Below is correct for left side and counter clockwise rotation. Some sets of shoe lining positions are equally identical, then it doesn't matter.

 

The picture I posted is the left front side on my vehicle.   Just like in the diagram.  Going forward, the wheel would be rotating counter clockwise.  I installed the front shoes on both sides of the vehicle with both small pads toward the front of the vehicle.

Edited August 10, 2024 by atkinson40

[atkinson40]

12 minutes ago, Stoffregen Motorsports said:

All of those brake hardware kits are pretty universal. Bendix made almost all of the drum brakes in that era, so it stands to reason that all of the hardware would be the same.

 

 Ordered.  I can be bleeding the brakes while I'm waiting for it to come.  I'll just put the drum on to hold the shoes in place as I do it.

[datzenmike]

21 minutes ago, atkinson40 said:

 

The picture I posted is the left front side on my vehicle.   Just like in the diagram.  Going forward, the wheel would be rotating counter clockwise.  I installed the front shoes on both sides of the vehicle with both small pads toward the front of the vehicle.

 

Then I change my stance. I saw 'right side no wetness' and... If that's the left side then on correct. I should have seen the tension rod, I didn't look.

 

The new shoes you order may have the friction material centered in the middle and there no difference in how you install them.

[Stoffregen Motorsports]

17 hours ago, datzenmike said:

 

Then I change my stance. I saw 'right side no wetness' and... If that's the left side then on correct. I should have seen the tension rod, I didn't look.

 

The new shoes you order may have the friction material centered in the middle and there no difference in how you install them.

Manufacturing differences kill me. I noticed what you just described last week when I was digging through the pile of parts to find a good set of backing plates for a customer project. The shoes on them were different than the ones that I took of the vehicle. It gets really frustrating trying to keep up with these seemingly small differences, but this one isn't really small. Sometimes shoes are made so that if they are installed incorrectly, they will grab too much. But centered, that would mean they are ambidextrous.

[datzenmike]

Probably too many complaints about pulling to one side from the owners putting them on incorrectly. These are from a time where there weren't many vehicles with power brakes so any advantage was used.

 

 

I got this set near closing time at Canby. Someone didn't want to take them home and only wanted $5 for them. I think they were for a 510? I was putting the other side on before I realized the shoes were different. Leading and trailing shoes. What they don't explain is some vehicles have the wheel cylinder at the top some at the bottom and this matters as well as turning

direction. 

 

 

Old shoes.

Above direction of travel is to the right with clockwise rotation. Wheel cylinder at top adjuster at bottom.

[420n620]

read on another car site a few months ago. The longer shoe pad " always "  goes to the rear of the vehicle. Doesn't matter what year or type of vehicle. 

Just did a complete replacement ( cylinders/brake shoes ) drums ok,  on my 71 521 and now my brakes are not binding up anymore. Forward or backwards.  

 

[datzenmike]

 

 

None of the shoes I have seen have a longer lining on one shoe. They are the same just clocked differently.

[atkinson40]

On 8/10/2024 at 4:24 PM, datzenmike said:

 

Then I change my stance. I saw 'right side no wetness' and... If that's the left side then on correct. I should have seen the tension rod, I didn't look.

 

The new shoes you order may have the friction material centered in the middle and there no difference in how you install them.

 

My bad DM.  I do not know my right from left.