View Poll Results: What kind of brakes does your bus have?
Hydraulic 106 37.06%
Pneumatic 170 59.44%
Electric 3 1.05%
Other 7 2.45%
Voters: 286. You may not vote on this poll

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Old 03-12-2007, 09:04 AM   #21
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Air brakes here, had one with hydraulic and was barely adequate once I got it loaded and towed my jeep. Had to make a couple quick stops in the new bus, much better. Some people seem to want to justify their choices by telling everyone else he is right and we are wrong. A skoolie is a personal choice and can be configured in whatever way suites the owner and their needs. It's a freedom thing. Dont f#@k with my freedom man!
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Old 07-30-2007, 07:53 PM   #22
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Re: What kind of brakes does your bus have?

250 hp Cummins? Do you have a 6CT or ISC (8.3 liter) in 30 passenger bus? Very cool if you do.
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Old 08-19-2007, 12:41 PM   #23
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Re: What kind of brakes does your bus have?

As a School Bus Conversion rookie I am finding this thread of great interest. Air-brakes verse hydraulic brakes is something I have been considering myself while researching this subject. I have worked on both types, hydraulics on cars and pick-up trucks, air-brakes on railroad cars. Both are easy to maintain. Hydraulics are well known, air-brakes (for the railroad) would require regularly scheduled COT&S (clean, oil, test and stencil) maintenance. Linkages and shoes would be visually inspected, bearing surfaces (fulcrums) would be cleaned and oiled. One end of the rail car (the B end) would have the airline plugged. The other end of the car (the A end) would be hooked up to an airline that ran through test gauges to bring the air-brake system up to the required specs. (pressure). The test would consist of testing if the cars air system would hold the required pressure (10 minute test). Then the brake system would be actuated and the shoes would be visually inspected for hitting the wheels properly. The linkages would or would not be adjusted and then the emergency system would be tested by simulating a complete air dump. When the car's air system received the proper inspection, maintenance and testing the test date was then painted (stenciled) on the car.

If something in the air brakes system didn't meet the Federal requirements then it would be adjusted or replaced to within tolerances for linkages and shoes. Air valves would require replacement of sections/parts of the valves and so forth. This consisted of loosening a few bolts and/or nuts, replacing a few O-rings and/or valve parts. The replaced valve parts would be sent back to the factory for rebuilding. The linkages and shoes would be replaced with new or used (again depending on Federal requirements) then be sent out for recycling. All in all the air-brakes were easy to maintain and repair once the system becomes well know by the mechanic, in the case of Skoolies, that mechanic may well be the owner/operator.
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Old 10-12-2007, 10:45 AM   #24
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Re: What kind of brakes does your bus have?

I have hydraulic brakes. I like them because I know how to work on them. I find it is best to know what your in for. Now by the time I replace this bus I might think of Air, But for now I like hydraulic. And I don't plan on a another bus for at least 5 years.
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Old 10-12-2007, 08:09 PM   #25
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Re: What kind of brakes does your bus have?

Air Brakes

87 Bluebird Chevy C60 chassis
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Old 10-14-2007, 12:08 PM   #26
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Re: What kind of brakes does your bus have?

Uh-oh. This is not good. I have bad news...I think you have the dreaded Lucas-Gierling brake system. Do you have a pull knob (like air brakes) for parking? Do you have a hydroboost or electric booter at the master cylinder?

Get a L-G brake manual, and MEMORIZE it. Any shop charges an arm, a leg, and your nuts to service these brakes.
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Old 10-16-2007, 04:35 PM   #27
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Re: What kind of brakes does your bus have?

That sure sounds like every L-G brake system I've heard of. I don't know why Ford insisted on using it so much. In theory it's a great system, but in practice it proved to have its issues. Don't let that turn you off at all. Just be aware that the system is a little less common and make sure you understand how it works. Also, check that big main pipe that carried fluid back to the chambers to back off the parking brake and sure it isn't corroded. Everything I've read points to that as the most common failure point bringing you to a rather abrupt halt.
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Old 10-16-2007, 10:27 PM   #28
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Re: What kind of brakes does your bus have?

The ones I have heard of having problems are the ones that actually use a large steel pipe to plumb the pressure back. I have never heard of a rubber version, but that most CERTAINLY doesn't mean it exists. If it is in fact a rubber line you might just be lucky enough not to have problems as I believe this is the retrofit most people go with....30 feet of hydraulic hose to replace the pipe.
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Old 10-21-2007, 08:22 PM   #29
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Re: What kind of brakes does your bus have?

Mine has good old air brakes...drum and "S" cams. Simple to change those out...The key is to REALLY lube up the rollers and the roll points. We use anti-sieze at the garage. works wonders. Changing out the rear air chambers can be deadly if you arent careful, but it is a relatively fast job. My bus uses nylon line just about everywhere. easy to repair those too. I may have learned a little too much about them... Mine has automaic slack adjusters on it so I don't have to crawl under it except to check the lining, and our company always removes the backing plates to allow for better cooling, so its a snap to check them

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Old 01-15-2008, 07:32 PM   #30
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Re: What kind of brakes does your bus have?

Which pedal is the break?

My new bus is hydrolic, my old bus is air, I have hauled 1 ton of water with air breaks, is there anyone that thinks 1 ton of water would not be so wise with conventional hydrolc breaks?
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