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#1 |
Registered User
Join Date: Oct 2004
Location: Coquitlam, B.C, Canada
Posts: 12
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Rear drum setup...is this correct?
Ive just redone the rear brakes on my 72 c20, new wheel cylinders, shoes, and drums and i can feel the truck pulsing slightly as i slow down (not the pedal), and the right rear locks up while driving normaly. I put them back together exactly as they came off, but im not sure they were ever installed right in the first place since they never really worked. Every piece of the braking system on this truck is brand new except the proportioning valve and a few of the lines. Ive bled all four corners numerous times and spun the adjusters in and out, but nothings worked yet....I took a couple pics for you guys to see if ive set these up correctly...pics are of the left side
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#2 |
Senior Member
Join Date: Jan 2005
Location: SUNNY WARM BIKE RIDING COTTONWOOD ARIZONA
Posts: 2,097
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Re: Rear drum setup...is this correct?
looks good to me but the correct way to set the rear brakes is to back up at a quick pace and then jump on the brakes, that cause the adjusters to set at the correct spot. do that a couple times and see if that helps.
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#3 |
Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: Rear drum setup...is this correct?
in the bottom pic the self adjuster arm looks to be installed incorrectly there should be an arm that extends over the star wheel to adjust the brake it should be located midway thru the star wheel looking at it straight on and that little spring on the adjusting lever should be fully compressed
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71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY Last edited by cdowns; 08-17-2006 at 09:26 PM. |
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#4 |
Senior Member
Join Date: Jan 2005
Location: SUNNY WARM BIKE RIDING COTTONWOOD ARIZONA
Posts: 2,097
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Re: Rear drum setup...is this correct?
looks like its all there to me
![]() Last edited by QKENUF4U; 08-17-2006 at 10:58 PM. |
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#5 |
Senior Member
![]() Join Date: Jul 2004
Location: Estherville, Iowa
Posts: 3,371
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Re: Rear drum setup...is this correct?
I don't know why it is locking up, other than misadjustment side to side, but the cause for the adjuster being out of place could be a missing spring cup under the hold down on the adjuster side (see red arrow). This spring cup holds the spring, plus it goes through both pieces to provide a pivot point. If it is missing, and just the nail is used by itself, that might cause the alignment problem.
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1968 C10 307 3spd Long Fleet ------ http://67-72chevytrucks.com/vboard/s...d.php?t=201103 1970 C10 305 Super T10 Long Fleet --- http://67-72chevytrucks.com/vboard/s...d.php?t=202285 1971 C20 383 TH350 Dana Posi ----- http://67-72chevytrucks.com/vboard/s...d.php?t=206894 2001 GMC Sierra 1500 C3 6.0 |
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#6 |
Registered User
Join Date: Oct 2004
Location: Coquitlam, B.C, Canada
Posts: 12
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Re: Rear drum setup...is this correct?
Green Machine.....I am actually missing the that back spring cup. That was the only piece that was missing, I figured i could get away with it
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#7 |
Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: Rear drum setup...is this correct?
doesn't matter 1/2 ton 3/4 ton or whatever the adjusting lever must be in the same relitive position for proper operation of the adjusters// all the parts maybe there but they're not installed for proper operation of the brake system
__________________
71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY |
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#8 |
I make Models
![]() Join Date: May 2005
Location: Bucks, PA
Posts: 626
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Re: Rear drum setup...is this correct?
Just a thought on this.....I had a similar problem with my 68 Chevelle.....I had replaced everything and was having the same problem with the back brakes not releasing......in the end the "new" master cylinder was bad out of the box....replaced it and all was well.......worth a shot if all else fails......
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#9 |
Running on empty
Join Date: Aug 2002
Location: Roanoke, Virginia
Posts: 1,033
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Re: Rear drum setup...is this correct?
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_____________________________________________ Tim We have two rules here at the Rock. Rule #1: No writing on the walls. Rule#2: Obey all rules 70 GMC Sierra Grande "Custom Camper" Longhorn 402 Big Block TH400 PS PB factory AC Posi; 94 Bronco XLT 302, auto;worn out daily driver ![]() |
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