Author Topic: Brake Gremlin  (Read 20860 times)

Offline TheWaterboy

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Re: Brake Gremlin
« Reply #15 on: July 02, 2016, 09:49:23 am »
that's interesting I have double checked the part number, that is the part i have. The other side is the same and it has not given me any issues. Here is the other side
86 C10 2WD LWB 350 ~ 2nd owner bought in 87 by grandfather

Offline TheWaterboy

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Re: Brake Gremlin
« Reply #16 on: July 02, 2016, 09:55:52 am »
Also to note I did realize the stud( in the upper left )  for the parking brake arm was out of place the clip had come off. That was corrected.
86 C10 2WD LWB 350 ~ 2nd owner bought in 87 by grandfather

Offline zieg85

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Re: Brake Gremlin
« Reply #17 on: July 02, 2016, 10:00:36 am »
When all the springs are put on and it is adjusted, do the top part of the shoes meet firmly against the top stud?  Red arrow
Carl 
1985 C20 Scottsdale 7.4L 4 speed 3.21
1986 C10 under construction
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Offline TheWaterboy

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Re: Brake Gremlin
« Reply #18 on: July 02, 2016, 10:07:08 am »


Yes is was only like that because i had the one spring off. 
86 C10 2WD LWB 350 ~ 2nd owner bought in 87 by grandfather

Offline TheWaterboy

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Re: Brake Gremlin
« Reply #19 on: July 02, 2016, 10:10:40 am »
I really appreciate all you help, I just put a new motor in and its killing me that i can't really get out and enjoy it >:(
86 C10 2WD LWB 350 ~ 2nd owner bought in 87 by grandfather

Offline zieg85

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Re: Brake Gremlin
« Reply #20 on: July 02, 2016, 10:16:45 am »
If the parking brake cable hasn't released 100% or the spring on the cable is weak sometimes you have to grind the slot deeper (blue arrow)
Carl 
1985 C20 Scottsdale 7.4L 4 speed 3.21
1986 C10 under construction
https://www.facebook.com/groups/248658382003506/

Offline TheWaterboy

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Re: Brake Gremlin
« Reply #21 on: July 02, 2016, 10:29:46 am »
It does seem to be releasing, I had it on a lift and put it in gear (drive and reverse) I applied the brakes and the parking brake several times it released every time. I did that for about 5 miniutes then let it down and took it for that 5 mile trip and half way though it started acting up.
86 C10 2WD LWB 350 ~ 2nd owner bought in 87 by grandfather

Offline zieg85

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Re: Brake Gremlin
« Reply #22 on: July 02, 2016, 10:50:45 am »
It does seem to be releasing, I had it on a lift and put it in gear (drive and reverse) I applied the brakes and the parking brake several times it released every time. I did that for about 5 miniutes then let it down and took it for that 5 mile trip and half way though it started acting up.

Try taking a large screw driver and pry the parking brake lever under the adjuster to the rear of the truck.  Mine releases but not all the way.  If that doesn't do it I am out of suggestions

Carl 
1985 C20 Scottsdale 7.4L 4 speed 3.21
1986 C10 under construction
https://www.facebook.com/groups/248658382003506/

Offline zieg85

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Re: Brake Gremlin
« Reply #23 on: July 02, 2016, 12:17:15 pm »
One more possibility is did you take brake clean to the new drums to clean the rust preventative off?
Carl 
1985 C20 Scottsdale 7.4L 4 speed 3.21
1986 C10 under construction
https://www.facebook.com/groups/248658382003506/

Offline TheWaterboy

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Re: Brake Gremlin
« Reply #24 on: July 02, 2016, 12:24:22 pm »
I did clean them off but I have also been dealing with this issue well basically sense i bought the truck back in September of last year. All the brake work I have done has been chasing the same problem so I don't think it is a bad part.
86 C10 2WD LWB 350 ~ 2nd owner bought in 87 by grandfather

Offline zieg85

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Re: Brake Gremlin
« Reply #25 on: July 02, 2016, 12:55:29 pm »
I am at a loss shy of machining one pass of the drums and scuffing up or replacing the rear shoes again to see if maybe the composition of the shoes may be of fault.  Does your state have inspections of trucks?  I used to have to run mine and it would stop on 4 pads to check the ratio of front to rear braking and would indicate if further inspection of the brakes were needed...
Carl 
1985 C20 Scottsdale 7.4L 4 speed 3.21
1986 C10 under construction
https://www.facebook.com/groups/248658382003506/

Offline hatzie

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Re: Brake Gremlin
« Reply #26 on: July 03, 2016, 06:59:00 am »
Can you get a picture of the other side?
I believe zeig85 is correct.  You have both trailing shoes on this side.
You probably have both leading shoes on the other side.
« Last Edit: July 03, 2016, 07:42:26 am by hatzie »
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Offline TheWaterboy

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Re: Brake Gremlin
« Reply #27 on: July 03, 2016, 07:02:01 am »
Can you get a picture of the other side?
I believe zeig85 is correct.  You have both trailing shoes on this side.
You probably have both leading shoes on the other side.
Hey, Reply #16 has a picture of the other side , both have the short shoe in the front though.

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86 C10 2WD LWB 350 ~ 2nd owner bought in 87 by grandfather

Offline hatzie

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Re: Brake Gremlin
« Reply #28 on: July 03, 2016, 08:43:28 am »

Is the adjuster actuator hanging up on a burr on the shoe or the E-Brake arm? 

Have you tried swapping drums LH to RH?

Have you tried swapping linings from LH to RH?
« Last Edit: July 03, 2016, 08:45:38 am by hatzie »
SVC & wiring mans --> Here http://tinyurl.com/7387BRD-SVCMAN or My Bucket @ http://tinyurl.com/SQ-SVCMAN
Parts & Illustr Books -->http://tinyurl.com/SqParts
GMSTG Textbooks-->http://tinyurl.com/STG-TEXTBK
Radio Manuals-->http://tinyurl.com/DELCORADSVC

Offline 1967KaiserM715

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Re: Brake Gremlin
« Reply #29 on: July 03, 2016, 12:01:45 pm »
The brake material stops about at the arrow if my memory serves me

besides the one hanging spring, it looks just like my brakes(untested yet, but I followed the old set up and they worked fine before)

both sets of brakes shoes(old and new) the pad went right to the lower dimple.

I would make sure you have the washer that goes in behind the adjuster arm, if it is missing, you will have a little slop, and that could be causing it to adjust in forward motion.
Current Vehicles:1985 GMC K10(Daily) 1991 GMC K2500(Daily) 1975 Beetle(not running) 1985 Mercedes 300D(not running) 1952 M35    1967 M715(not running)
 1986 Chevy K30(under repair)