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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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| | | | Joined: Sep 2011 Posts: 148 Shop Shark | | Shop Shark Joined: Sep 2011 Posts: 148 | So i started working on my brake lines today and i added fluid to mc. I replaced the cap on mc and brake fluid started shooting put of a small hole in the cap. This cap is not original, it is made of plastic and the hole looks like it was made to be there. This makes no sense to me but thought i would ask someone that really knows. Would napa carry the original type brass plug?? Thanks for any advice and recommendations guys. | | | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | yes there's a necessary breather hole in these old MC caps, and that's one of the main drawbacks of the old system [open to ambient moist air] - the plastic caps are common replacements for the originals that always corrode badly - they weren't brass from the factory, but some of the vendors have [or did have] aluminum ones that don't rot, but whatever type you settle on find a rubber O-ring to use as a gasket to avoid having it seize onto the MC
Bill | | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | | | |
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