Does this brake booster need replacing?

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Old 08-20-15, 12:05 PM
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Does this brake booster need replacing?

Pictures are attached. It seems like there may be some fluid around the housing. It passed the 3 main booster tests I found on the internet that I performed on it from inside the cab.
 
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Old 08-20-15, 10:13 PM
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A make and model of vehicle would probably be helpful here.

Is this is a vacuum brake booster or an hydraulic one ?
There should be no fluid at all in a vacuum assisted brake booster.
 
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Old 08-20-15, 10:53 PM
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Sorry, it's a 2011 F-150 STX V8 5.0L 4x4. Not sure about the other part of the question, hydraulic I think
 
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Old 08-21-15, 01:47 AM
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I've never heard of a hydraulic brake booster? All boosters I've ever seen are vacuum operated and they assist a hydraulic brake master cylinder.

If your brakes are working well..clean it off and see if it re-appears.

What is all that plastic wrap and styrofoam in the pic?
 
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Old 08-21-15, 06:22 AM
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It's not plastic wrap, just looks that way. It's the heat shield material that's attached to the firewall. Attached a zoomed out pic for clarity.
 
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Old 08-21-15, 06:26 AM
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Is the brake fluid going down. There is no fluid in booster but if loosing brake fluid may have a master cylinder leak.
 
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Old 08-21-15, 06:35 AM
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Brake fluid is a little down from the max line. Maybe 1/2" below max line. This was caught by a tech at a local garage doing the yearly inspection on it. I'm pretty handy and was going to just replace the booster if it was bad because it's easy, but if it could be master cylinder then perhaps I should go get it diagnosed. I hate doing brake work that requires bleeding the system, etc. PITA.
 
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Old 08-21-15, 07:33 AM
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I'd just keep an eye on it and the fluid level. If it is a leaky master cylinder the weak will get worse and easy to tell.
 
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Old 08-21-15, 10:03 AM
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Just a note...brake fluid should never have to be "topped off". As the level drops it's an indicator of either a leak or brake wear.
 
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Old 08-21-15, 10:22 AM
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Thanks all for your responses, it's been very insightful.
 
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Old 08-21-15, 10:55 AM
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Brake fluid will need to be Topped Off as brake pads wear! Only a small amount of fluid would be needed.
 
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