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Click on image for the lowdown. 
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| | | Forums66 Topics128,047 Posts1,055,662 Members48,426 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
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on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Jan 2016 Posts: 631 'Bolter | | 'Bolter Joined: Jan 2016 Posts: 631 | Link to understand the brake components and their function: http://www.hotrod.com/articles/proper-plumbing-pointers-making-installing-brake-lines/In general.............Residual pressure valves on drums hold the wheel cylinder seals out not the brake shoes. On discs they stop flow back on certain installs, normally not needed. Pressure hold on discs can result in brake drag and lock up from pressure build hot with not allowing pressure release. | | |
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