New C50 Owner

[C10 - C90 Bill]

I just noticed your comment in your signature. Did you try super-tuning your 292?

The 292 in my '64 C-30 got somewhere around 12-15.

[Airdirect]

I had rear wheel cylinders leaking as well, just soaked them with brake clean and wiped them down a couple of times. Your shoes like they have very little wear. Here is a picture of mine after cleaning.

[STPETEBLUE]

Originally Posted by C10 - C90 Bill

I just noticed your comment in your signature. Did you try super-tuning your 292?

The 292 in my '64 C-30 got somewhere around 12-15.

Haven't done anything to the motor. Goal is to get it roadworthy, then to the shop for the frame shortening. After that work is done, we start on the little stuff.

[STPETEBLUE]

Originally Posted by Airdirect

I had rear wheel cylinders leaking as well, just soaked them with brake clean and wiped them down a couple of times. Your shoes like they have very little wear. Here is a picture of mine after cleaning.

Those look pretty clean. No grabbing problems after reassembly?

[Airdirect]

None! Given the price it is well worth trying. I suspect yours will clean up as well. We used to clean semi brake shoes all the time after a wheel seal failure. They were very nasty but cleaned up just fine. Might need a couple applications of brake clean to get it all off.

[CarolinaHD]

Nobody makes/sells the gm 15x5 brake shoes anymore. I've called several places over the past year and no one could help. I plan on sending my rear shoes to this local company to be relined.

http://www.cecofriction.com/index.html


Centric brakes makes 14x2 shoes for the front and dorman still makes all the rubber brake lines. Raybestos still makes wheel cylinders (although made in China) and can order them from Rock auto. If you need any help with part numbers just let me know.

[STPETEBLUE]

Originally Posted by CarolinaHD

Nobody makes/sells the gm 15x5 brake shoes anymore. I've called several places over the past year and no one could help. I plan on sending my rear shoes to this local company to be relined.

http://www.cecofriction.com/index.html


Centric brakes makes 14x2 shoes for the front and dorman still makes all the rubber brake lines. Raybestos still makes wheel cylinders (although made in China) and can order them from Rock auto. If you need any help with part numbers just let me know.

I got Centrix wheel cylinders for the back from Rock Auto, but have not installed them, yet. Our local Fleet Pride said to bring the shoes in. They felt sure they might have what I needed, although Airdirect is the third person to tell me they clean them, all the time, with no issues. I think I will try that first.
Right now, my biggest concern is the inner wheel seal.

[CarolinaHD]

3974846 is the original GM part number for 1969 c50 with 2 speed rear axle

370106A is the updated timken/national/federal part number


Gmpartswiki.com will be your best friend after this

[CarolinaHD]

Dorman H38908 is the brake hose from master cylinder to the frame for my 67 and It looks about the same as your 69.

[STPETEBLUE]

CarolinaHD, you are on your way to becoming my new best friend!

[STPETEBLUE]

I'm also trying to figure out what rear axle I have. The SPID says it's a T150, but the casting numbers Google a T170.
BTW, what does SPID stand for? Sticker Placed In Dash???

[CarolinaHD]

Thanks! Just trying to do my part to keep these old trucks on the road!

Spid= Service parts identification

Post up a pic of it and the vin

[STPETEBLUE]

Originally Posted by carolinahd

thanks! Just trying to do my part to keep these old trucks on the road!

Spid= service parts identification

post up a pic of it and the vin

[71'tahoe]

Originally Posted by STPETEBLUE

Haven't got the fronts off, yet. I'm a little nervous about trying to clean the shoes, but that is my last option. As soon as we are able to safely leave our houses, I am taking the shoes to Fleet Pride to see if they have a set, and the wheel seals to our local bearing house to see if they have a match. I have new rear wheel cylinders and new flex hoses, except for the one running from below the master cylinder to the frame mount.
Attachment 1996634
I suspect I'll be able to find that one okay.

I'll have to search my file but I changed mine. I got the replacement from Napa.

[71'tahoe]

Originally Posted by CarolinaHD

Nobody makes/sells the gm 15x5 brake shoes anymore. I've called several places over the past year and no one could help. I plan on sending my rear shoes to this local company to be relined.

http://www.cecofriction.com/index.html


Centric brakes makes 14x2 shoes for the front and dorman still makes all the rubber brake lines. Raybestos still makes wheel cylinders (although made in China) and can order them from Rock auto. If you need any help with part numbers just let me know.

Please pass a long the part numbers if you wouldn't mind.
I need to replace all mine.

[CarolinaHD]

The following is for a 1967 c50 with 5000lb front axle, 15,000lb 2 speed vacuum shifted rear axle, and midland vacuum brake booster.

Front 14x2 shoes- Centric 111.02990
Rubber brake hose master cylinder- Dorman h38908
Rubber brake hose front wheels x2- Dorman h36697
Rubber brake hose rear axle- Dorman h71305
Brake master cylinder- Dorman m630823
Front right brake wheel cylinder- Raybestos wc19091
Front left brake wheel cylinder- Raybestos wc19090
Rear brake wheel cylinder x2- Raybestos wc37159
Rear brake wheel cylinder x2- Raybestos wc37160
5000lb front axle kingpin rebuild kit NO REAM- Stemco k51g
Moog plastic bushing kingpin rebuild kit- 8492n
Kingpin thrust bearing- timken t110
Front wheel bearings x2- timken 3578a and 15103s
Front wheel bearing race x2- timken 3525 and 15243
Front wheel seal- timken 8975s
Rear wheel bearings x2- timken 3982 and 33287
Rear wheel bearing race x2- timken 3925 and 33472
Rear axle vacuum shift diaphragm- Bendix 374451

Should be about everything except rear wheel seal, rear shoes, and brake spring kits.

All axle related parts are the same for 1965-1974 4000, 5000, and 7000lb front axles.

[STPETEBLUE]

[1976gmc20]

Originally Posted by STPETEBLUE

Those look pretty clean. No grabbing problems after reassembly?

I had to replace a wheel seal on my old 65 C/50. I just cleaned up the shoes with alcohol. (we wuz pore)

No problems at all, except a little while later was coming off a long steep mountain pass with a 10x50 mobile home behind. That side did some smoking so I guess I burned off the rest of the gear oil residue

Hauled logs with the truck for about five years after that and never did another thing with the brakes.

[STPETEBLUE]

Originally Posted by 1976gmc20

I had to replace a wheel seal on my old 65 C/50. I just cleaned up the shoes with alcohol. (we wuz pore)

No problems at all, except a little while later was coming off a long steep mountain pass with a 10x50 mobile home behind. That side did some smoking so I guess I burned off the rest of the gear oil residue

Hauled logs with the truck for about five years after that and never did another thing with the brakes.

Thanks for the input. I think I'm gonna clean them.

[1976gmc20]

Originally Posted by STPETEBLUE

Thanks for the input. I think I'm gonna clean them.

You're welcome. Of course my 1965 c/50 wasn't all that "old" back then as that was 1982 I think

[STPETEBLUE]

Final update. Got new wheel cylinders installed, new brake lines, cleaned the brake shoes with Brakleen as Airdirect suggested and everything worked perfectly.
After hounding the guy who said he would do the modifications for me for 7 months, I took the truck to two different shops to get estimates. WAY out of my price range. So, with a touch of bitterness, I sold the truck.

I no longer own a pre-'72 truck!