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Old 03-24-2017, 09:20 PM   #1
Honest Bob
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Brake fluid leaking in cabin

Hey guys I have a '75 C35 with the hydroboost brakes. I have a leak right under the brake pedal which I assume is brake fluid as its clear (the power steering fluid is pink). Am I right in thinking its the brake booster that needs to be replaced/refreshed?

Anyone have any experience using this kit?
http://piratejack.net/hydro-boost-rebuild-kits/
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Old 03-24-2017, 10:03 PM   #2
mongocanfly
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Re: Brake fluid leaking in cabin

Yep..probably coming from the hydro..I never rebuilt one I just got a rebuilt one when mine started leaking
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Old 03-25-2017, 10:26 AM   #3
flatbed82
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Re: Brake fluid leaking in cabin

Does it have a mechanical trailer brake controller on the truck? The older mechanical trailer brake controllers have a metal line spliced into the master cylinder that runs into the cab. The line on my truck went bad and was leaking brake fluid on the floor.
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Old 03-25-2017, 07:47 PM   #4
Honest Bob
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Re: Brake fluid leaking in cabin

No mechanical brake controller. Its coming from the rod that the brake pedal pushes on. I'm gonna order one of those rebuild kits and see where that takes me.
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Old 03-25-2017, 11:19 PM   #5
Nessmuk
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Re: Brake fluid leaking in cabin

Classic bad hydroboost symptom.
Go to the steel soldiers website, then to the cucv section. They have the army repair manuals on line and it will walk you right thru replacement.
Also, there is a difference between the Blazer and the truck ones... As I found out.
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