Brakes
Parts Nerd Extraordinaire
Joined: Sep 2010
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From: Western NY
You are going to have to define "upgrade"...
Do you have a problem with your brake system? It may be easier to service the presumably stock system. Are you looking for the more difficult and inventive route seeking different axles with a different setup with disc and/or air brakes?
Do you have a problem with your brake system? It may be easier to service the presumably stock system. Are you looking for the more difficult and inventive route seeking different axles with a different setup with disc and/or air brakes?
Logistics Pro
Joined: Sep 2014
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From: Bothell & Silverdale, WA
What is your goal? Need more specific information. But to answer your basic question, yes. And a lot will depend on your resources.
Logistics Pro
Joined: Sep 2014
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From: Bothell & Silverdale, WA
Bendix Hydrovac
https://www.ebay.com/itm/1948-1956-F...-/224014061910
Parts Nerd Extraordinaire
Joined: Sep 2010
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From: Western NY
Rock Auto has some cylinders and kits:
https://www.rockauto.com/en/catalog/...epair+kit,1956
I think this is your booster:
https://www.summitracing.com/parts/aaz-51-8091
https://www.rockauto.com/en/catalog/...epair+kit,1956
I think this is your booster:
https://www.summitracing.com/parts/aaz-51-8091
Logistics Pro
Joined: Sep 2014
Posts: 4,920
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From: Bothell & Silverdale, WA
In this thread I posted how you can identify which booster you have. This is important because of the core charge you could be liable for.
These boosters don't come up frequently, and rebuild kits are rare. The one that Brian posted looks like mine but it won't be available until next March.
https://www.ford-trucks.com/forums/1...ovac-info.html
These boosters don't come up frequently, and rebuild kits are rare. The one that Brian posted looks like mine but it won't be available until next March.
https://www.ford-trucks.com/forums/1...ovac-info.html
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Logistics Pro
Joined: Sep 2014
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From: Bothell & Silverdale, WA
Then unless you have someone to rebuild your booster, looks like you'll have to wait until March.
Brian has you all lined up with cylinders too.
May want to closely inspect the brake line hoses at the front wheels and rear axle as well. Hope all your brake drums are good.
Brian has you all lined up with cylinders too.
May want to closely inspect the brake line hoses at the front wheels and rear axle as well. Hope all your brake drums are good.
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New User
Joined: Nov 2020
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From: Roxboro,NC
I have send brake booster/Master cylinder with brake pedal rod ford The smaller trucks,Would that not work on my F7. All the cylinders and brakelines and Master Cylinder was replace 10 years ago and has not be driven since.I got it running and had no brakes and checked their was no brake fluid so I fill it and I don't see
any leaks and the pedal is not building up at all.
any leaks and the pedal is not building up at all.
Parts Nerd Extraordinaire
Joined: Sep 2010
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From: Western NY
As an aside, you might want to update your profile to indicate a general location. If you were near me, I'd offer to help in a hands on fashion. If you are not near me, there may be others who are.
Logistics Pro
Joined: Sep 2014
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From: Bothell & Silverdale, WA
I don't quite understand your post. Did you send your booster out to be repaired already?Anyway, if you haven't here's the method to bleed your brake system.
Manually Bleeding A Hydrovac Brake System
Manual bleeding requires filling the master cylinder reservoir and pumping the brake pedal to force the fluid through the lines to expel air from the system. This operation must be done with the engine shut off and no vacuum in the power brake system.
With the master cylinder reservoir filled, open No.1 bleed screw on the Hydrovac and depress the brake pedal to expel air. When the brake pedal has reached the toe board, close the bleed screw before returning pedal to release position. Repeat this procedure until solid fluid, free from bubbles, comes from the bleed screw. Check the master cylinder frequently to insure an ample supply of fluid.
Using this method, bleed No.1 and No.2 bleed screws on the Hydrovac and then proceed to the vehicle wheel cylinders. Then start with the wheel cylinder farthest from the master cylinder and work your way to the wheel that's closest; typically RR, LR, RF, LF.
Attached Images
And no, you cannot install a booster from a smaller truck. Not only would it not work properly. but there would be a huge liability issue.
Manually Bleeding A Hydrovac Brake System
Manual bleeding requires filling the master cylinder reservoir and pumping the brake pedal to force the fluid through the lines to expel air from the system. This operation must be done with the engine shut off and no vacuum in the power brake system.
With the master cylinder reservoir filled, open No.1 bleed screw on the Hydrovac and depress the brake pedal to expel air. When the brake pedal has reached the toe board, close the bleed screw before returning pedal to release position. Repeat this procedure until solid fluid, free from bubbles, comes from the bleed screw. Check the master cylinder frequently to insure an ample supply of fluid.
Using this method, bleed No.1 and No.2 bleed screws on the Hydrovac and then proceed to the vehicle wheel cylinders. Then start with the wheel cylinder farthest from the master cylinder and work your way to the wheel that's closest; typically RR, LR, RF, LF.
Attached Images
And no, you cannot install a booster from a smaller truck. Not only would it not work properly. but there would be a huge liability issue.
Logistics Pro
Joined: Sep 2014
Posts: 4,920
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From: Bothell & Silverdale, WA
Depends on the specs, but I don't think it has the capacity for big brakes. It's also a dual cylinder so more involved.