Gary, you would be amazed at how many folks will go under a bus that has been raised on its air bags. When I am under mine IN THE PIT I still put the jacks (jack down, adjusting screw fully extended) under the support point. At least that way I have a total mechanical support that cannot possibly have a hydraulic failure.
When I work on the suspension, or any part of the air system, I have two jacks under the support point, as we did when Roger and I changed air bags on our buses.
I have had my bus raised up by the Detroit/Allison dealer and like Prevost they used the four floor lifts that go under the tires with a pair of forks. Unlike Prevost the forks under the drive axle went under a single tire instead of the pair of tires. I would be scared to death that the tire would blow and the sudden shift would bring the whole thing down but they were totally unconcerned. The only thing I did although it probably didn't make a bit of difference was to dump the air from the air bags so the drive axle air bags were not totally collapsed with full air pressure like the tires were.


Reply With Quote
