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Old 10-29-2020, 08:52 AM   #21
Bus Crazy
 
Join Date: May 2014
Location: West Ohio
Posts: 2,081
Year: 1984
Coachwork: Bluebird
Chassis: International 1753
Engine: 6.9 International
Rated Cap: 65
I wouldn't blow it. Degreaser is fine, so is spraying it off with a garden hose, but if you're using air to blow it, you can push the degreaser past the different seals and that wouldn't be good.

Every year before annuals we pressure wash the underside of the buses with a hotsy. That water will be close to boiling and the grease and grime just falls off like nothing. I did it once without the hot part on, and you could definitely tell a difference in efficiency. After washing, we'll then grease everything and go through and inspect it.
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Booyah45828 is offline   Reply With Quote
Old 10-29-2020, 12:54 PM   #22
Bus Nut
 
Join Date: May 2017
Location: Houston TX
Posts: 387
Year: 1998
Coachwork: Amtran
Chassis: International
Engine: dt466e
Quote:
Originally Posted by Brad_SwiftFur View Post
Yeah, as Booyah said, the brakes can stick after being parked for some time - or applied when the brakes were fairly hot. Sure, you could do as described and whack 'em with a hammer, or do what many drivers do and rock the vehicle forward/back until the brakes let go (my usual method if/when this happens).


The part is called an "Air Dryer" for a reason! It's supposed to take excess moisture out of the compressed air. Naturally there will be water in this part, which it's supposed to purge periodically with a nice reassuring "Pshhh!" (usually right as the air compressor cuts-out).



If you spray the underside with degreaser, why not go on and give the underside a nice bath while you're at it?
I can't tell if you're saying this is a bad idea or why not do more than spray it with a degreaser, Like use a pressure washer or something lighter than a pressure washer..?
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Old 10-29-2020, 05:43 PM   #23
Bus Crazy
 
Join Date: May 2016
Location: Georgia
Posts: 2,177
Year: 2001
Coachwork: Blue Bird
Chassis: IH
Engine: T444E
Rated Cap: 14
I'm thinking a careful pressure washing. If you have access to a hot water setup then skip the degreaser and use hot water, but do be careful to avoid any major closeup high pressure sprays where there are parts with seals and gaskets. Since most of us won't have hot water setups, use some degreaser and regular temperature water.
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Old 10-29-2020, 07:35 PM   #24
Bus Nut
 
Join Date: May 2017
Location: Houston TX
Posts: 387
Year: 1998
Coachwork: Amtran
Chassis: International
Engine: dt466e
Hear you loud and clear. I had just recently purchased a battery-powered sprayer for weeds, pesticides, etc and think it would be perfect for this task as it's only 40-70 psi, (2 settings)

Thanks
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Old 10-29-2020, 08:33 PM   #25
Bus Crazy
 
Join Date: May 2016
Location: Georgia
Posts: 2,177
Year: 2001
Coachwork: Blue Bird
Chassis: IH
Engine: T444E
Rated Cap: 14
I think a typical "Car Wash" pressure will be fine, just keep the nozzle a foot or so away from anything that shouldn't be wet inside.
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