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 Air Brakes..How do I know?
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imadriver2
Active Member

19 Posts

Posted - 07/06/2010 :  9:02:22 PM  Show Profile  Visit imadriver2's Homepage  Reply with Quote
I recently started driving for a new company. The old busses I drove did not have Air Brakes. This new bus I am told, has AIR ASSISTED brakes. What may I ask is the difference. I am not licensed to drive anything with AIR BRAKES. Are they trying to pull a fast one on me?

How can I tell if they are?

Bus Boy 39
Top Member

USA
1315 Posts

Posted - 07/07/2010 :  12:05:52 PM  Show Profile  Reply with Quote
I could be wrong, but I was once told that air assisted brakes have nothing but air keeping the parking brake in place. I have drove one of these buses and it had a yellow parking brake knob just like a bus with air brakes, but no air guage because it didn't have air brakes.

I'll show you my air brakes if you show me yours.
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jwreaume
Active Member

43 Posts

Posted - 07/08/2010 :  10:39:04 AM  Show Profile  Reply with Quote
What kind of bus are you driving? A few specifics and we can probably help. There are air-over-hydraulic brakes, as well as air assist.

17 years in the truck & bus world, 10 years at an IH Dealer, ASE Certified Master Medium & Heavy Truck Technician and Advanced Level Diesel Engine Diagnostic Specialist, IH Diamond Certified 5 Times, Instructor of Apprentice Techs in Engines, Fuels, Electrical & Electronics.

Ask anything, I likely will have the answer, or at least a believable lie for ya...

120 Units, 5 Bays, 5 Techs, Living the dream baby...
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imadriver2
Active Member

19 Posts

Posted - 07/08/2010 :  7:51:35 PM  Show Profile  Visit imadriver2's Homepage  Reply with Quote
LOL at the both of you. This particular bus has an Air Pressure Gauge. On our PRe-trip sheet I now mark Vaccuum Pressure gauge where in the past, older bus I drove, I marked that n/a. I will have to get the make n model..maybe then you will be able to tell me.
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wagonmaster
Top Member

USA
2298 Posts

Posted - 07/20/2010 :  11:38:41 AM  Show Profile  Reply with Quote

How are you able to do a proper pre-trip inspection without knowing what type brakes your bus has? You should have been trained in the different brake equipped buses BEFORE being allowed to drive them......Go see your Shop Foremen/Lead Mechanic for a short lesson.

Joe
Land of the Free, because of the Brave!
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ihthomas665spd
Active Member

12 Posts

Posted - 08/14/2010 :  8:18:04 PM  Show Profile  Visit ihthomas665spd's Homepage  Reply with Quote
I had an 86 Chevy with vaccuum powered brakes, it had a gauge clearly marked vaccuum. I have also driven the new Internationals with the air over hydraulic parking brake and it didn't have an air pressure gauge but did have the yellow "air parking brake" nob for setting the pariking brake. Look and see if there is a master cylender and see if it has disc or drum brakes, that would be a good place to start.
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