[Archived]

Dale,

I’m guessing here but I think your vintage coach has, front to rear a #30, a#3036 combo, and a #24.

You can check Prevost, but unlike air bags from Prevost have been the best prices on the planet, I think you might find the local Fleetpride or Truck Pro or any other store to be more competitive.

The #30 brake chambers are often on special and where I live they are sometimes in a big tote in the showroom for $30 apiece. Your local guys may have to order the #3036 or #24 (assuming I got the number right) but the combo was about $130 the last time I got one and the #24 was $35 or thereabouts.

I trust you will respect the killing force an uncaged emergency brake has and be absolutely certain you have it caged properly. I mention that because you may have to loosen the band clamps to orient the chambers to clear for assembly or to orient them for the hoses.

[Archived]

I finished removing the drivers side brake chambers today.

The steer is #24 the driver is a #3036 or #36 ? there is no ID on the tag one. I’ll call Prevost Parts tomorrow and see what the availibility and price is and check at Fleet Pride, I’ll post the results.

[Dale]

I think the tag is a #30, Prevo Number 641253 @ $228.31 on 9/6/11.

I changed all my chambers, hoses and brake pads with Prevo parts last year.

The special tool that makes the job bearable is a hardhat liner.

JIM

[Archived]

Just a couple of comments…………..we cannot assume because our coach has a specific part that someone else’s coach manufactured in a different year has the same part. If memory serves Jim’s coach has a combo brake for the tag so he has an emergency brake on both his drive and tag axles. Dale I believe has an emergency brake (a combo) only on his drive axle. Sizes vary on brake chambers from coach to coach and I shouldn’t have guessed what Dale’s were.

The price Jim posted for a #30 brake chamber is so high compared to what Dale will find when he shops prices, Dale is apt to think Fleet Pride is supplying the wrong part. A #30 is CHEAP. My guess if Dale posts it will be around $35.

[Archived]

Hi Dale,

Don’t know if you have the liftable tag or not but on my H3-40 that uses 1 more chamber on each side.

[Archived]

All our coaches have a liftable tag. Trouble is nobody really knows if the tag is being lifted unless they actually get out to check.

[David]

The lift cannister for the tag is pricy at Prevost, I think I paid about 4000. I didn’t have the luxury of being at home so I could shop around and was on the road when it went south.

[Archived]

I just bought the lift chambers for my coach (Bendix type 36) for $86 each from NAPA. Prevost wanted $156 each.

[Archived]

Ron,

The lift chamber for the tag that I had to buy at Prevost was part #640729 and the price was 451.66. I don’t understand the big difference in price with what you mentioned. Could you verify the part number that Prevovst wanted 1560 please. If I paid too much and there is a different alternative, I would like to know.

[Archived]

Do any of you know if you have 3030’s on your drive? I have 3036’s. Fleet Pride said that 3030’s should work fine, I went ahead and ordered the 3036’s.

I did learn that the first 30 of the 3036 is for the service braking and the the 36 is the size of the parking brake. So in summery, I have on my bus, steer braking; #24, drive braking; #30 and tag breaking; #16. Only the drive axle has parking brakes and they are #36.

How does this configuration differ from the newer bus’s and 45’ers with more gvwr?

[glen]

The brake chamber size and type is all over the map and depends on the vintage coach, the weight and size, and the type of brakes.

My 97 for example had a #30, #3036 and a #1624, front to rear. My current heavier coach has smaller chambers at every position but the brakes are different, eliminating slack adjusters entirely and using a diferent geometry for brake application. The current coach is all disc, the previous coach was disc on the steer and tag, drum on the drive, my first coach was all drum.

Like yours my first coach had an emergency brake on the drive only (and it would not hold on my driveway) and the 97 and 06 have an emergency on drive and tag, both will hold anywhere on my driveway.

The effective braking force is a function of a lot of things. On our coaches engineers establish the brake chamber size based on the forces required to provide adequate braking to meet the standards but not lock up an axle prematurely. Lock up has been mitigated to an extent by the ABS. The guy who told you a 3030 would work needs to show you his engineering degree and job experience designing brake systems at Rockwell or Bendix. Any time you change something on our coaches, whether it is deviations from the allowable axle weight limits, brake chamber size, the length of the slack adjuster arm, etc. you are messing with a highly engineered system with all components sized based on allowable weights and the standards required for certification. I can assure you that the spring size in a 30 emergency brake chamber is going to be about 18% less than the one in a 36 chamber. While you may not care if your coach will hold on my driveway, if you have a system failure and you have to rely on your emergency spring brake to slow and stop your coach that 36 chamber is possibly going to be the difference between life and death.

[Peter]

Well put Jon, I was kind enough to him that I said, well I think I will just go back with the 3036’s.

I had forgot about all the newer bus’s being disk, so we wouldn’t be speaking apples to apples.

[Archived]

Tom,

Like you, I don’t understand the price difference between your tag axle lifting chamber (640729) and mine (641425). Prevost Parts lists both as Type 36. The label on mine reads “MGM 1436018 C102297 641425.” Even though mine began life as an H3-45 seated coach with disk brakes on all wheels, I wouldn’t think that would make much difference. I would expect the tag lifting chambers to be about the same for all coaches. For a $600 difference in price for two, I’d check into it a little deeper. I can send a photo if you need one.

[Ken]

Thanks Ron, I’ll check it out.

[Bill]

I am running into the same issue with ordering brake chambers from Prevost as well. Elgin quoted me for Type 36 service brake chamber to lift the tag $455.33 I used a MGM number that Ron Walker posted above, and called MGM to see if their Type 36 chamber ( MGM1436018) had anything special to iot. The gal on the other end at MGM in California said NO. So I put in a call to Guillame Charron in Quebec to see who he can direct me. I am wanting to know if the $455 dollar price, according to Elgin, is from the Pricing Dept is a typo.