[Deleted User]

If you are talking about the little plastic ring that goes over the boot for the slide pins yes there was one on I took it off, now the new caliper comes with only one for the big slide pin and none on the short one Bendix is looking into it right now to see if the new ones need two or just one the info that came with the calipers says only one on big slide pin

[Hugh]

I had talked to Jeff about coming out in November to replace my Knorr brake chambers. Now with two failures on recently installed brake chambers, you got me worried, and wondering if I should keep going with the original brake chambers!

[Kim]

What is the mileage on these buses that have had these failures? Year model of chassis? any connection there?

Mine has 40k miles, and has all the original components, so not sure what to replace or not.

Tom, send me info on the new pulse system, I may need to try it after all.

[Archived]

My coach is a 2002 Vantare on a 2000 Prevost XLII shell. It has just over 178K miles. The chambers were changed at 173K miles. I do not know the information from Peter’s coach, but the signature states 2003 Liberty.

[tom]

Mine is. 2002 prevost shell , brake chambers changed at 100,000 miles fall of 2014 so they have rolled down the road for two years now , never a problem , I am in a in depth talk with Benndix engineers right now they will get back to me today will let u guys know what they say

[Bill]

A little Thread Creep.

Jerry, you will like the new Pulse monitor as it will allow
you to seamlessly change from monitoring your stacker to monitoring just your
toad and back again with only a couple of button pushes from the cockpit since
it allows multiple vehicle’s sensors to be programmed into memory.

Your welcome Tom.
Just apply my sales commission to my PC dues.

[glen]

I have started some correspondence with Prevost Car and Peter and Kim have been copied on it so if needed they can also add to my request for assistance.

A dragging brake on a coach can be an isolated incident and for every one reported there can be a variety of reasons. What makes this situation worth following is it appears there is no lack of proper maintenance, the probable part that was defective seems to be either relatively new or with few miles, and short of some means of monitoring brake disc temps there does not appear to be a viable way to do a pre-trip inspection that would reveal a dragging brake. Waiting until you see smoke or a tire fire from the heat just is not acceptable.

[Billy]

For the entrepreneurial type among us, we need to develop a system that would be equivalent to shooting an IR gun at our heat risks real time with a display on the dash. Pressure pro has the tire covered, but we need hub and brake yet.

[Larry & Diane]

You are correct and the technology is there, but I suspect the market is not.

In all the years I have been on Prevost forums I cannot remember brake dragging or overheated hubs as being an issue such as this with the grouping of incidents.

The Meritor / Rockwell front and tag disc brakes were prone to brake dragging if they were over greased, something we quickly became aware of and once it was general knowledge I cannot remember any reported incidents for quite a few years now.

What makes this stand apart is the cause is unknown and it happened to people who are maintaining their coaches to a high standard. There are no errors in service we can point a finger at. If a system was developed to pin point hot spots in known potential trouble areas I am sure Prevost could add it to the current message centers. I am not sure if a retrofit would have enough of a customer base willing to pay the money.

[Darrell]

Guy French the Vice President called me back from Prevost we are looking into this problem cause of why I will get back to u guys , I am now in the process of replacing the other four calipers and shoes at the ranch so then everything will be new now, I will let you guys know

[Archived]

Peter How did they look for as salt,& corrosion from snowy roads

[Dorel]

I never drive the coach in snow or salt , but they looked good for that old 12 years old

[Dan]

Not to take away from this investigation in any way… Just remember guys that dragging brakes are not limited to the newer disk style.

I had an old manual slack adjuster lock up on me about a year ago. I caught that one by hearing it followed very shortly by smelling it. The tire was about 165F when I stopped and immediately hit it with an IR gun. I had been lubricating properly and had done so less that 2,000 miles before it locked up.

Now they were 20 years old. I replaced all. BUT these are not on any replacement schedule that I know of and you can not pre-trip or even under the coach inspect for a pending failure.

[Larry & Diane]

I also had a brake to stick and ground everything up , but no fire. Do you consider that lucky or unlucky?

[Dan]

<$5000 = lucky. >= $5000 = unlucky