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Old 09-04-2024, 10:01 AM   #1
72c20customcamper
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Manual drum brake issue

I redid all the brakes on my 68 consisting of new shoes, cylinders and had the drums resurfaced last fall . The brakes pulled slightly to the right so I adjusted the shoes to full lock and then backed off till there was drag on all four. I took it out today and was on my gravel driveway . It’s a long drive so I got it up to 20-25 mph and slammed the brakes. Both passenger brakes locked up and skidded on the gravel . Drivers side didn’t even disrupt the gravel . I drove around around applying the brakes and the left front/rear got warm so I know they are active. But not working properly I’m going to pull a drum and look at the shoes anything I should look for ?

It’s puzzling that one side isn’t working but the other side works great .
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Last edited by 72c20customcamper; 09-04-2024 at 03:27 PM.
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Old 09-04-2024, 11:57 AM   #2
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Re: Manual drum brake issue

I’m a dumb ass don’t rush doing brakes . Rear the push pin from the wheel cylinder was not engaged . Not sure what the issue was on the fronts I scuffed the rotor and shoes didn’t see any problem but I can lock up all four on blacktop now .
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Old 09-04-2024, 01:55 PM   #3
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Re: Manual drum brake issue

It's been a long time since I've seen new brake shoes, but those don't look new ;-)
Good you got is sorted out
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Old 09-04-2024, 03:24 PM   #4
72c20customcamper
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Re: Manual drum brake issue

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It's been a long time since I've seen new brake shoes, but those don't look new ;-)
Good you got is sorted out
I put them on last year been sitting in my barn with about 2 miles on them. The rust is what came off the drums from sitting and may be the reason the front wasn’t working well till after I cleaned the shoes and drum . Cobwebs in the first picture tells the tale

Edited the first post to reflect the time period
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68 anniversary.

Last edited by 72c20customcamper; 09-04-2024 at 03:30 PM.
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Old 09-04-2024, 03:37 PM   #5
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Re: Manual drum brake issue

I did the brakes last August .
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Old 09-04-2024, 08:55 PM   #6
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Re: Manual drum brake issue

Though it didn’t involve my 70, (original 4 wheel drums), I went through the same struggle on my Dually. I had to replace one of the cylinders on the rear, and had that hub on and of no less than five times before I finally figured out that I forgot one of the small levers for the auto adjuster.
The conundrum was that the hubs are so bulky that I didn’t want to take the other side off to use it as a reference. In the end, that would have been a WHOLE lot easier
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Old 09-05-2024, 12:07 AM   #7
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Re: Manual drum brake issue

I can't count on my fingers and toes how many brake jobs I've done over the years, but I always take a picture before I start....my memory is short but a picture is the ticket to success.

Before todays tech I had one of them polaroid instant picture cameras
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Old 09-05-2024, 12:16 AM   #8
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Re: Manual drum brake issue

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I can't count on my fingers and toes how many brake jobs I've done over the years, but I always take a picture before I start....my memory is short, but a picture is the ticket to success.

Before today's tech I had one of them polaroid instant picture cameras
That's the picture that you needed to (Shake) fan it till dry.
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Old 09-05-2024, 12:19 AM   #9
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Re: Manual drum brake issue

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That's the picture that you needed to (Shake) fan it till dry.
Yep that be the one!
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Old 09-05-2024, 01:57 PM   #10
72c20customcamper
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Re: Manual drum brake issue

This is all on me . Not doing a quick check of my own work .
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66 SS396 Chevelle 1964 Hawk, 63 Avanti,62 lark
1969 AMX ,
1968 c20 stepside ,85 K20
1977 Suburban sold
68 anniversary.
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Old 09-05-2024, 02:05 PM   #11
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Re: Manual drum brake issue

I find at work that the answer will become painfully obvious just AFTER I've hit enter and admitted my incompetence by asking a broad spectrum of co-workers
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Old 09-05-2024, 04:40 PM   #12
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Re: Manual drum brake issue

Quote:
Originally Posted by 72c20customcamper View Post
I put them on last year been sitting in my barn with about 2 miles on them. The rust is what came off the drums from sitting and may be the reason the front wasn’t working well till after I cleaned the shoes and drum . Cobwebs in the first picture tells the tale

Edited the first post to reflect the time period
Yeah, I just didn't look at the top pic and the shoe material just looked really thin in the bottom one for some reason
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Old 09-05-2024, 04:43 PM   #13
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Re: Manual drum brake issue

We all have dumbass attacks sometimes.
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Old 09-06-2024, 10:59 AM   #14
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Re: Manual drum brake issue

Been in that exact place before, only on the fronts. It was my teenage years and that first attempt at a stop was really interesting with only one front brake grabbing.
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Old 09-06-2024, 11:55 AM   #15
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Re: Manual drum brake issue

I’ve had brain flatulence - one time I changed the disc brake pads on a car (something I’ve done a lot) and as always (fortunately) I took the car for a test drive afterward - hit the brakes and heard a horrible screeching sound… turned out I had put the pads in backwards…metal against metal…Jeez….
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Old 09-06-2024, 12:08 PM   #16
70STOVEBOLT
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Re: Manual drum brake issue

Someone should start a "repair mistakes & blunders" thread. I always like reading the stories in the Rock Auto newsletters.
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Owner installed options:
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Cigar Lighter
Courtesy Lights
Deluxe Side Markers
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Power Windows
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Old 09-06-2024, 12:28 PM   #17
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Re: Manual drum brake issue

I’ve had brain flatulence - one time I changed the disc brake pads on a car (something I’ve done a lot) and as always (fortunately) I took the car for a test drive afterward - hit the brakes and heard a horrible screeching sound… turned out I had put the pads in backwards…metal against metal…Jeez….
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