My 4905 has: one under driver in compartment, two above batteries in compartment right behind passenger front wheel and one on bulkhead rear of rear axle mounted vertically with several of the brake system valves mounted next to it. It has a drain valve on bottom.
Date of the manual pages?The world changed a lot in 1975 for air systems...happy coaching!buswarrior
Richard, I wish I knew something about your bus but I don't. So I'm here just to say I'm impressed with how fast you're getting back into this after such a recent scare. You have my respect sir. Carry on. Hope to meet you someday.Sent from my iPhone using Tapatalk Pro