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#1 |
Registered User
Join Date: Apr 2011
Location: Las Vegas, NV
Posts: 264
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No Guts?!
I have been using the pandemic to make progress on my 71 and went to tackle the rear brakes to get her rolling and found this when I took off the driver side drum.. There is nothing in there but a wheel cylinder. I’m a newb when it comes to drum brakes. I can change shoes and springs, but I don’t know all of what I need to find or the best way to source what I need to make this drum functional again. Disc brake swap isn’t in the budget right now. Any junkyard suggestions? There aren’t any 12 bolts I’ve seen in my local pic a part.
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1971 C10 - LWB shortened to SWB, welded in my C notch, reinforced trailing arms with 3/16 plate, new cpp 5" rear drop springs, 2" drop blocks, ece super panhard kit. Cpp drop spindles, 2 inch front springs, 5.3/4L80E I call it Bruce Banner.. |
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#2 |
Senior Member
![]() Join Date: Jan 2001
Location: Orem, Utah
Posts: 7,915
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Re: No Guts?!
Scary. This is a pretty good diagram. Check the wheel cylinder for rust too.
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I have sworn upon the altar of God, eternal hostility against every form of tyranny over the mind of man. - Thomas Jefferson |
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#3 |
Registered User
Join Date: Jun 2013
Location: Somewhere
Posts: 3,077
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Re: No Guts?!
Is the other side intact? If so, use it as a model. Don't pull the intact side apart until the bare one is rebuilt.
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#4 |
Registered User
Join Date: Jul 2002
Location: St. James, MO
Posts: 1,239
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Re: No Guts?!
After seeing that, I wouldn't bother trying to save the cylinder: they are cheap. Replace it.
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'69 Longstep K-10: 327/SM465/T-221/Closed Knuckle Dana44/12-bolt. |
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#5 |
Registered User
Join Date: Apr 2013
Location: South Westerlo, New York
Posts: 1,325
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Re: No Guts?!
Stepping on the brakes you would think brake fluid would be all over blowing out the wheel cylinder. interesting.....
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Thanks, Joe.. 1969 C/10, 348 C.I., 3X2 bbl. V8, 2004r , LWB. |
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#6 | |
Special Order
![]() ![]() Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,859
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Re: No Guts?!
Quote:
You need to look on the parts board for a C'10 being parted or contact a Hi octane member who keeps parts inventory for many of the parts. A lot of this stuff isn't available in replacement parts or restoration
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
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#7 |
Registered User
Join Date: Jul 2002
Location: St. James, MO
Posts: 1,239
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Re: No Guts?!
Good point. The replacing probably needs to start at the rubber line to junction block on the axle housing and go all the way to the drums.
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'69 Longstep K-10: 327/SM465/T-221/Closed Knuckle Dana44/12-bolt. |
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#8 |
Registered User
Join Date: Mar 2011
Location: MA
Posts: 354
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Re: No Guts?!
Replace wheel cylinder and brake hose too. Get a complete hardware kit with adjuster. I believe the bar (can't remember the right name) and e brake lever are separate items. Also that pic above isn't exactly the same as what you have there. Check other side and use it as a Chinese blueprint if it's all together. They are super easy to put back together.
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#9 |
Registered User
![]() Join Date: Jul 2015
Location: 2nd left past the stump on a dirt road.
Posts: 2,629
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Re: No Guts?!
one two syllable word
RockAuto |
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#10 |
Moderator
![]() Join Date: Dec 2012
Location: ON, Canada
Posts: 2,159
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Re: No Guts?!
First step is figure out if fluid is getting to the back. Start with disconnecting the hard lines at the rear cylinders, then work forward. Lines to block. Flex line to block, etc, etc.
Always the best how to with images: https://www.pbase.com/nufsed/drumbrake And the first pic with everything: |
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#11 |
Registered User
Join Date: Apr 2011
Location: Las Vegas, NV
Posts: 264
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Re: No Guts?!
My apologies for the lack of context. I haven’t driven the truck. My dad and I tore the truck down to the bare frame and C notched it while it was stripped. When he sold his house I had to move it out of his 2000 sqft shop into my 3 car garage. 12 bolt that came with the truck was thrown back under the frame and I am doing my best to make it a drivable truck again this year since I am a Realtor with a fair bit of extra time lately. When I took the roller wheels off it and removed drum I found this.. I appreciate the diagram posted. That’s great info. Now I just need to find the drum bar I guess. Most everything else comes in a full rebuild kit I believe, but I haven’t been able to find one of those in a kit. I appreciate everyone’s help with my truck.
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1971 C10 - LWB shortened to SWB, welded in my C notch, reinforced trailing arms with 3/16 plate, new cpp 5" rear drop springs, 2" drop blocks, ece super panhard kit. Cpp drop spindles, 2 inch front springs, 5.3/4L80E I call it Bruce Banner.. |
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#12 |
Who Changed This?
![]() Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,427
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Re: No Guts?!
You can try the parts for sale board here, and maybe buy the parking brake strut from a vendor like LMC if none pop up here. That piece doesn't look like the factory piece, though. You can find new springs for them at most parts houses, though they may have to order them.
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~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA |
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