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Old 11-14-2006, 08:24 PM   #1
JBK
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Brake sticking on the AirBus

The right front brake is sticking (bad) on my 'new' 86' 345. I had new pads installed and the shop said the caliper is fine, but it is still sticking. I mean like for miles and miles. What could cause this. The Bus hasn't been used more than 100 miles per year in the past three years.

JB
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Old 11-14-2006, 08:32 PM   #2
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What could cause this. The Bus hasn't been used more than 100 miles per year in the past three years.
I think you answered your own question.
Things get stuck when they don't get used. Try to run it around the block every week.
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Old 11-14-2006, 08:47 PM   #3
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I put the new pads and ran it around the block about a thousand times. 400 mile rounc trip. Still stick.

JB
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Old 11-14-2006, 08:54 PM   #4
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Caliper slides, or a brake hose collapsed/clogged.
To check for a bad hose, apply the brakes, hard, then release them. Open the brake bleeder screw on the suspect caliper. If fluid shoots out, chances are very good it is a hose.
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Old 11-14-2006, 08:59 PM   #5
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Could be any number of things. When you say "sticking" do you mean, doesn't release at all or just rubs or somewhere inbetween.

I would look at the caliper first. On the P30 the outer caliper "slides" in a grove on the top and bottom. There is a retaining "spring plate" that's secured with a hex bolt which hold everything together. These need to be lubricated so the outer part ot the caliper can "return".

You may also have corrosion on the piston, or a bad line or something with the proportioning valve or master cylinder, loose wheel bearing, out of true rotor, etc.

Baron is correct, lack of use is worse than regular use on components like brakes and engines. I've gotten in the habit of running my 345 about ten miles a week, running the generator, AC units, water pump, etc.
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Old 11-14-2006, 09:00 PM   #6
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...and what Terry said.
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Old 11-14-2006, 09:09 PM   #7
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Get your brake hoses replaced ,thats the most comon problem on any P30
chassis they close up inside ,deteriorate really and then act like a one way valve .The brake hydraulic pressure can pressure past the restriction in the hose but it cannot release after you release the pedal .Ive replace quite a few of these hoses ,mostly on motorhomes as they don't get much use.
Replace them in pairs ,both sides always .Calipers can stick too ,but the hoses are the main trouble most of the time .

Scott
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Old 11-14-2006, 09:20 PM   #8
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Thanks, guys. The shop mentioned the hose, but didn't have time to do them. Is it as simple as it sounds?
By the way, why is this thread not showing up on the regular new post board?

JB
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Old 11-14-2006, 09:32 PM   #9
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Originally Posted by JBK
Thanks, guys. The shop mentioned the hose, but didn't have time to do them. Is it as simple as it sounds?
By the way, why is this thread not showing up on the regular new post board?

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Old 11-14-2006, 09:55 PM   #10
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O-K, I had to shut down and re start the forum site. Refreshing didn't work. Weird.
JB
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Old 11-14-2006, 10:54 PM   #11
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I had to drive Chummy to the shop with a rope tied to the brake pedal in order to get it to release. Problem was a crimped hydraulic hose and a stuck caliper. The mechanic said I must always replace the calipers when I replace the pads. Now it works like a dream.
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Old 11-15-2006, 08:05 AM   #12
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Thanks, guys. I will crawl under the Bus this weekend. I'll let you know.

JB
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Old 11-15-2006, 08:51 AM   #13
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When my '86 345 front brake stuck it was the hose. Seems like I had to get a hose for a P32 chassis instead of a P30 for it to fit. (Mine was built on an '85 chassis.) It's been several years and I don't have the coach anymore. I think the difference was in the fittings on one end. I bought a hose at NAPA. I took the old hose down and matched it. I had a p/u truck that did the same thing, so its not uncommon.

Neal
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Old 11-18-2006, 11:15 AM   #14
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Thanks again. One question; are there two lines, one a hard and one a hose, or is the supply line a hose and there is only one? I just peeked and didn't see a hard line, but then again, I didn't jack it up to get a good look. I will be replacing the hose tomorrow.

JB
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