Originally Posted by Falkortheluckbus
I have a 1998 bluebird with a 5.9 Cummings. I brought it home last October and it sat through the winter. I went out and I started it every couple weeks. But didn't move it because of the snow. I tried moving it first melt and it wouldn't budge. I jacked up each end and rotated each tire. They were stuck, I'm assuming rusted to the drum. But now it still won't move and I can hear the pads grinding in the back. Is there anyway to loosen them up?
Do you have air brakes or hydraulic? I'm assuming air brakes since most hydraulic systems use driveshaft brakes for parking and that's not the symptom you are describing.
With air brakes, drop it in low gear and give it some throttle. Rock it a bit to free the brakes. Drive it a bit. Brakes should free right up after a couple stops.
Most air brakes since the late 90's (I forget the exact cutoff year) are self adjusting (and self-adjusters were retrofitted to many earlier buses).
Before I forget, how much air pressure you showing? The brakes will release but drag if it's somewhere between 40-60 PSI.
If you are still hearing brake drag after a bit of driving (a couple miles and a few stops), at that point it might be a good idea to get 'em checked. Once they break loose and have full pressure (over 80 PSI should be enough) there shouldn't be any drag.