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| | | Forums66 Topics128,075 Posts1,056,007 Members48,433 | | 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!
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on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Oct 2009 Posts: 59 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2009 Posts: 59 | Anyone have the specs on the bleeder screws for the brake system on a '66 C50?
The one on the slave cylinder takes a 7/16 wrench and the ones located on the wheel cylinders take a 3/8. I want to replace a couple but don't know the thread size/pitch.
Help?
Brian | | | | | Joined: Nov 2005 Posts: 6,100 'Bolter | | 'Bolter Joined: Nov 2005 Posts: 6,100 | Hy Brian Lohnes, according to my parts book there are different part numbers depending on whether you are looking for front axle ones or rear axle ones, and then the size of the diff makes a difference on the p/ns as well. | | | | | Joined: Oct 2009 Posts: 59 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2009 Posts: 59 | I can tell you I'm looking for the one on the slave cylinder (Hydravac) and one for the rear axle, which is a single speed 15,000lb piece.
Last edited by Brian Lohnes; 11/24/2010 5:17 AM.
| | | | | Joined: Nov 2005 Posts: 6,100 'Bolter | | 'Bolter Joined: Nov 2005 Posts: 6,100 | Hy Brian Lohnes, it took a bit of looking, but I think both of them have the same thread and length. They do have two different o.e.m. p/ns the wheel cylinder screw is p/n 5455122, it has 3/8" X 24 t.p.i. X 1 1/64", the Hydrovac screw is o.e.m. p/n 2261467 also 3/8" X 24 t.p.i. X 1 1/64", so I guess the difference in the part number is the size of the hex. Some crosses for those part numbers are Carlson H9402 Bendix 94005 FM 3203 Quick Brake 107 United 6858 Wagner F6858, hope that helps. | | | | | Joined: Oct 2009 Posts: 59 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2009 Posts: 59 | | | |
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