Ford 9" Venting
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Senior User
Joined: Aug 2004
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Ford 9" Venting
OK. I have 50 F-1 that I put a 9" out of a 64 into. Shouldn't it be vented somewhere? I'm thinking the block that couples the brake lines also acts as a vent but I'm not sure. The reason I ask is that I had a leak on the passenger side and took it apart to find the seal pushed all the way out and ruined. I put it back together and later checked the fluid and noticed air getting sucked in or pushed out when I loosened it so maybe pressure forced the seal out?
Cargo Master
Joined: Apr 2003
Posts: 2,389
Likes: 58
On my '61, the bolt which holds the brake line splitter doubles as the vent.
I had seals leaking one time and the vent was the first thing I looked at. It was blocked. It's easy to clean. Just remove it from the axle housing, and use a small drill bit with your fingers to remove the crud.
I had seals leaking one time and the vent was the first thing I looked at. It was blocked. It's easy to clean. Just remove it from the axle housing, and use a small drill bit with your fingers to remove the crud.
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 784
From: Simi Valley, CA
The brass block for the rear brake hose has a hole in it. The vent (B8A4022A -1957/63) passes thru this hole, threads into the housing.
