 Expert
   Location: Cottage Grove, OR | I am not sure what is meant by the "air over part". The stock system uses dual vacuum boosters to operate the brakes. One for the front and one for the rear. It is a bit of a challenge to get all of the air out of the brake cylinders. Usually a pressure or vacuum bleeder is needed to do it completely. If you go to this website, http://www.fmcmotorcoach.com/index.html , you will be able download all three manuals (Owners, Parts, and Repair) and also various service bulletins.
Parts and advice can be gotten from both RVS in CA and MCR in IL. |