2000 Southwnd hissing noise when I apply brakes.

Question

When I apply the brakes on my 2000 Southwind f-35 chassis, theres what sounds like a vacuum leak comming from down by the pedal! They work fine but I drove a Friends m/h just like mine and they were quite. I thought it was just a quirk to the ford brakes, but I guess not. Any ideas what would cause this noise?
Thanks Steve

happy-2 · Answer

Its the power assist ,my 1999 did the same thing.drove it for years like that.never had a problem .

wildmanbaker · Answer

If you have a ford chassis, this is normal.  They have an electric (12 v) motor that provides hydraulic power to the brake system, even if the engine is not running.

jaybird · Answer

happy-2 wrote:Its the power assist ,my 1999 did the same thing.drove it for years like that.never had a problem .X2

ssisbest · Answer

Ok thanks!

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2000 Southwnd hissing noise when I apply brakes.

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