Originally Posted by budbud7
Sunday I was able to get under the bus and I did find a valve and some linkage. It appears that 1/4" rod with 1/4" rubber tubing makes up the linkage. The rubber tubing is broken up. Its attached with small hose clamps. Do you know if this is a stock arrangement (the hose/hose clamps) or is it a temporary fix.
There still might be an air leak because I didn't get that far in checking things out.
Your problem is the same problem we have had continually with the Thomas Saf-T-Liner EF that the church owns. We have had to replace the rubber connectors in the height control linkage too many times.
Our repair tech suggested the problem arises with the church bus because it isn't used every week. It sits around long enough most weeks that the air leaks out of the air bags letting the suspension go all the way down. With the air bags going flat so many time the rubber hose/tubing on the height adjustment would get bent over and back again so many times the rubber would fail.
We replaced the hose/tubing with a Kenworth part that is metal with a rubber eye. Now if the bags leak down the ends won't be bending back and forth.