Newmar Ventana air brakes

Tom/Barb wrote:


Remember air pressure releases the brakes, lack of air allows the brake springs to apply the brakes.

NO, let me explain:

Your service brakes (the brake pedal) is air APPLIED, spring released.True for both front and rear brakes.

Your emergency/parking brake is spring APPLIED, air released. Applies only to rear brakes. That is why there are two "cans" on the rear brakes-- one for service brakes, one for emergency/park brakes.

dpfreeman wrote:
It has 800 miles on it. Dealer said it was normal. I do not hear other RVs make this sound. No sound on pressing brakes, just went I let off

It's air entering/leaving the brake chambers.

Remember air pressure releases the brakes, lack of air allows the brake springs to apply the brakes.

What you are hearing is the air pressure being applied to the brake cans.

or

you have a brake can rod scraping the can. (very doubtful)

OR
You have disk brakes and the caliper squeaking as it releases. ( it will quit )

We had a few trucks that sounded like a sick duck as the air discharged when you let off the brake.

Drove it several hundred miles and it makes this sound every time

It has 800 miles on it. Dealer said it was normal. I do not hear other RVs make this sound. No sound on pressing brakes, just went I let off

Ours squeal when first coming out of the garage. They're always quiet before the end of the driveway.

How many miles, maybe it's a still being a new "thing"?

Normally on airbrakes, you'll just hear and feel them a little when they release and that's it.

Bill