Studebaker us6 brake pedal goes to floor

Trucks used by the U.S. Army in world War II that were 2.5 tons and larger. Such as Studebaker US-6, International M5-6, 4 Ton tractors (Auto Car, etc.), 5 Ton (Corbitt, etc.), the Dragon Wagon, and any other trucks 2.5 tons and over.
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sixbysix
First Lieutenant
First Lieutenant
Posts: 136
Joined: Sat Sep 03, 2011 5:09 am

Studebaker us6 brake pedal goes to floor

Post by sixbysix »

Hi
I seem to have air getting into my brake system and I can't figure out where.
When vacuum bleeding 3 of the 4 rear wheels I seem to get a constant stream of bubbles.Manual bleeding with the brake pedal doesn't elicit brake fluid from the wheel cylinder bleeding points
There is no loss of brake fluid from the master cylinder - I don't need to top it up.
when I press brake it goes to floor and there doesn't seem to be to be any movement of brake fluid in the master cylinder reservoir when i press the brake with the master cylinder "cap" off.
Any suggestions welcomed
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