Hydro-Boost or no Hydro-Boost?
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Junior User
Joined: Sep 2006
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Hydro-Boost or no Hydro-Boost?
Hello guys,
2005 F-250 V10 CC Lariat. How do you know if you have Hydro-Boost or not? It is displaying the signs of a worn out master cylinder and the parts guys are asking if it has hydro-Boost. I am not sure how to tell.
Question #2- The trouble shooting procedure in the maintenance manual says to plug the master cylinder outputs and see if you can maintain pedal height. Anyone know the thread pitch and depth of the plugs I need?
Thanks in advance.
2005 F-250 V10 CC Lariat. How do you know if you have Hydro-Boost or not? It is displaying the signs of a worn out master cylinder and the parts guys are asking if it has hydro-Boost. I am not sure how to tell.
Question #2- The trouble shooting procedure in the maintenance manual says to plug the master cylinder outputs and see if you can maintain pedal height. Anyone know the thread pitch and depth of the plugs I need?
Thanks in advance.
Hotshot
Joined: Jan 2002
Posts: 17,988
Likes: 207
From: La La Land
A V-10 is a gasoline engine, and has intake manifold vacuum. That vacuum is used to assist the brake master cylinder to create the "power" in power brakes.
A diesel engine has no intake vacuum, and the "power" in power brakes is developed with the use of hydraulic oil pressure in the hydroboost, the same pressure that is supplied for the power steering by the power steering pump.
You have no hydroboost, but a vacuum assist instead.
Pop
A diesel engine has no intake vacuum, and the "power" in power brakes is developed with the use of hydraulic oil pressure in the hydroboost, the same pressure that is supplied for the power steering by the power steering pump.
You have no hydroboost, but a vacuum assist instead.
Pop
Lead Driver
Joined: Sep 2007
Posts: 8,180
Likes: 669
From: Scio, OR
A V-10 is a gasoline engine, and has intake manifold vacuum. That vacuum is used to assist the brake master cylinder to create the "power" in power brakes.
A diesel engine has no intake vacuum, and the "power" in power brakes is developed with the use of hydraulic oil pressure in the hydroboost, the same pressure that is supplied for the power steering by the power steering pump.
You have no hydroboost, but a vacuum assist instead.
Pop
A diesel engine has no intake vacuum, and the "power" in power brakes is developed with the use of hydraulic oil pressure in the hydroboost, the same pressure that is supplied for the power steering by the power steering pump.
You have no hydroboost, but a vacuum assist instead.
Pop
Earlier Ford diesels used a belt driven vacuum pump and standard vacuum assist brakes. I'm not exactly sure when they went to hydroboost for diesels, but I think it was '99. If not then, it was with the 6.0L in '03.
Also I don't believe any E series van with a diesel had hydroboost. I think they all had belt driven pumps. I'm not entirely sure on that last part.
Post Fiend
Joined: Jul 2005
Posts: 6,127
Likes: 6
E series diesel is vac pump at least to 2005, and I don't believe they changed afterward all the way to 2010.
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Laughing Gas
Joined: Mar 2009
Posts: 843
Likes: 6
From: Jessup, PA
A V-10 is a gasoline engine, and has intake manifold vacuum. That vacuum is used to assist the brake master cylinder to create the "power" in power brakes.
A diesel engine has no intake vacuum, and the "power" in power brakes is developed with the use of hydraulic oil pressure in the hydroboost, the same pressure that is supplied for the power steering by the power steering pump.
You have no hydroboost, but a vacuum assist instead.
Pop
A diesel engine has no intake vacuum, and the "power" in power brakes is developed with the use of hydraulic oil pressure in the hydroboost, the same pressure that is supplied for the power steering by the power steering pump.
You have no hydroboost, but a vacuum assist instead.
Pop
My truck has a V10 and hydro boost brakes.
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FTE Leadership Emeritus
Joined: Sep 2000
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From: Stephensville WI
I'd have to disagree. Hydroboost is OK, but the problem is the power steering pumps they put on these trucks is weak. It is just adequate for the task. Throw in bigger tires to turn, suddenly you're replacing pumps on a regular basis.
Laughing Gas
Joined: Mar 2009
Posts: 843
Likes: 6
From: Jessup, PA
So far I like the hydro boost brakes. This is the first truck I had them on. The pedal is constant and very responsive and this truck has excellent stopping power even when loaded down.
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