Splicing air lines.

moisheh wrote:
Fire Up: I have always been anal about air leaks. When I started driving long haul part time I was amazed at how many trucks would leak down to almost 65 lbs. overnight. These were all late model trucks. The maintenance guys would give me a strange look when I complained. The answer I would get is that some vehicles can hold air for a week and others maybe a day. The DOT requirement for leaks is liberal. Part of the brake test is to shut off the engine, block the wheels and build up air. With park brake off you hold down the brake treadle for a minute. For a bus you can lose 3 psi in a minute. So in 40 minutes you would be out of air. Keep in mind this only tests the brake system. There are lots of other places where leaks occur: leveling valves, air suspension and even lines to the air horn. As you stated finding the air leaks is a daunting task.

Moisheh

Moisheh,
I'm not "proud" of having an air leak on this coach and, I'm in no way, lazy when it comes time for maintenance. If anyone's ever read my threads on any of the maintenance or repairs I've done on this coach, they're all proof positive about me not being lazy. But, based on the fact that the loss rate of air on this rig is not all that bad and, it's not that hard to supply air to it while it's parked in the barn, I've simply not jumped on the search for the leak.

I will, at some point in time but, not just right now. And yes, as part of being a Engineer on the Fire Department, we had to know all the rules and regs on specs for air systems, leak down tests, build up tests, timed leak downs, pressure tests, static tests and much, much more. If this rig would loose 90% over night, that kind of leak would be easy to find, even with my really bad HEARING!

I'll get to it, someday.
Scott