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Old 04-07-2011, 08:02 PM   #1
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Audible burst of air release from Pac Brake

When I turn my DP ignition to On (not Start), I can hear a release of air from the Pac Brake. I can also feel the burst of air at the cylinder air line connector.

The brake seems to work fine, but I have not heard a similar sound from other DP's that I am aware of.

I posted this question on another forum and received three replies which seem to conflict although two that hear this sound have some other brand of exhaust brake.

So, when you turn your ignition key to On (not start), do you hear a burst of air from your Pac Brake?
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Old 04-08-2011, 05:47 AM   #2
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If you turn your exhaust brake switch off first (or hold your throttle about 1/2 way down) then turn the key to the on position do you still hear/feel the burst of air to the exh. brake cylinder?
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Old 04-08-2011, 11:32 AM   #3
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I have not tested those criteria. I will do that at next visit to MH storage.
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Old 04-11-2011, 06:15 PM   #4
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I called Pac Brake. They said it was a leak. I tightened the fittings and all is well.
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