[David]

A few years ago I could not get the red hose from Prevost so I purchased from my local Truck Pro parts store,I don’t remember the price but it was nothing like the prices quoted here,I think that the red hose was around 30-40 each.John at Prevost Jacksonville and his mechanic Dave agreed that the hot side should have the red hose and not the blue.

[Dan]

Mira Loma knows the drill, 2 years ago when they changed my CAC I told them I wanted the red hose.

I looked up my invoice from 9-3-13 and it didn’t say red or blue just CAC Hose but I know the higher price was red.

Part# 21448469 $135.50 Red

Part# 531471 $26.73 Blue

Later

bv

[Bernie]

Bernie,

Thanks for looking it Up. The interesting thing is that those are the same part numbers on my invoice and I don’t have any hoses that are RED

Bill

[Rick]

look at your number Bill, it ends 68, mine ends 69

Later

bv

[Tim]

Bernie,

Sorry I just typed it in wrong…. here is a cut and paste from the PRevost invoice

198531 COOLER, CHARGE AIR 1.000 1,375.32 1,375.32

21448469 HOSE, CHARGE AIR COOLING 1.000 151.59 151.59

531386 CLAMP HO SS/HD/CT/PS/SL 4.00″ 9.000 8.17 73.53

531467 HOSE, SILICONE 4″ I.D. X 7″ 1.000 36.95 36.95

531471 HOSE, CHARGE AIR COOLER 1.000 26.73 26.73

U23512139 ANTIFREEZE, POWERCOOL GAL from bulk 2.000 16.53 33.06

________________________________________________________________T_o_ta_l_ O__p_er_a_t_io_n__________________________________ _ _ _2_,8_9_4_.9_8_

[Deleted User]

After having two failures with the blue hose what Jon is saying makes total sense to me. I want to make the change from Blue to red. I am confused about what is the correct model number and manufacture for both red hoses needed. Also where could I buy them.

After having two failures I do not want a third. Thank you so much Jon and the rest of the PC gang for bringing this important subject up.

[Philip]

Wow, then I am stumped Bill. Mine is red.

Prevost doesn’t know what there giving us.

Later

bv

[Archived]

The plot thickens.

I am at a total loss as to how to deal with a hot side part number, Volvo or Prevost, that ends up being a blue hose. When Prevost is asked to supply a hose for the hot side they don’t know about color and all they go by is the part number. If the purchasing specs for the hoses are specific as to having a 500 degree rating then I agree the color doesn’t matter. But I have been completely stymied in my attempts to find any blue hose available with a 500 degree rating. I spent hours searching on the internet. There are numerous sources and all used blue to denote a 350 degree rating. After the internet search I went to Truck Pro and Fleetpride to see what they offered that met the length and diameter spec for the hot and cold side and both offered red for hot and blue for cold.

That places anyone that wants to insure their coach is equipped with high temp hoses for the hot side in between a rock and a hard place because the folks that ask Prevost to put high temp hose on the hot side into a confrontational situation because the tech or parts guy are both going to insist the blue hose specifed is OK for the hot side.

Unless some produces a spec sheet for the hoses called for by Prevost that shows a 500 degree rating I have to say to not allow their use on the hot side. A failed hose is a serious issue because the coach cannot produce enough power to drive. Even the slightest up hill grade will stop the coach. With a disabled coach you have a safety issue in that you end up along side the highway and face a tow.

[Archived]

I have given up on getting the correct hoses from Prevost. I get mine from HPS Silicone Hoses http://www.hps-siliconehoses.com Prevost parts guys dont understand there is a differance as they only see what the computer shows as the correct part. Last I checked they could find no Red hoses in their warehouse….

[Archived]

Here is the direct link to site, Thanks Jeff, that is going to help many PC members.

Question ; Jeff, Your installing the “Hump” hose on hot side locations ?

http://www.hps-siliconehoses.com

[jack]

For those of you who have the wrong hoses on the hot side I can tell you it is not a super hard job to replace them, but it is also not the easiest job to do.

The horn is easily removed from the turbo. Removing it allows you to move the hot side metal tube easily in any direct. With the horn removed from the turbo you can merely pull the horn from the hose and the hose from the metal tube. If you have had the hoses in place for a while it may be necessary to cut them with a utility knife lengthwise where they connect to the horn and tube and force them to release using a screw driver or other tool to break the bond.

The lower CAC inlet hose is more of a challenge because to get access you need to remove the panel behind the tag axle wheel. It has a gazillion screws, metric of course, but once the panel has been removed you can see and access the lower tube. I am not going to tell you it will be easy, but at least you can get at it. If you are young, agile, skinny, and able to wiggle around you can leave the tag axle tire in place. Fat old guys who get cramps in their legs are going to want to pull the tag tire.

If you removed the turbo end first you can move the tube around quite easy and removal of the hose and reassembly is not that bad. Of all the hoses that are part of the air intake system this lower “hot side” hose is the one I want to be red more than the other, and double clamped. It is the hardest one to get at so that is the hose I want to be the high temp, double clamped for sure.

Several of us have changed our own CAC and dealt with replacing the hoses and it just requires some time, some twisting and reaching and only basic tools. If you do decide to tackle the job in addition to new hoses use new clamps also because you do not want to do this twice.

[Archived]

I used Flexfab #7727-0001 and it is red silicone rated to 500 degrees and 50 PSI of pressure 4″ X 8″,go to their catalog and check out pages 16-17.

[Corey]

BA, the hoses have to have the “humps” and the metal rings due to the internal pressure of the system. An EGR coach is putting out 50 PSI and the rings literally keep the hose from bursting.

I think Jeff showed me one that had a broken ring and the flex part popped because of that.

[David]

Jeff,

Thanks for calling. I have 2 8″ Hot side hoses on the way to the shop for install tomorrow and they are going to fix the bracket that broke on the to pipe as well. Pretty disappointing that you can go to a website and in 5 minutes have what you need vs. several hours on the phone with Prevost and still not have any sense of what is what. That isn’t counting all the time Jon and Others spent tracking it down.

Thanks to all for the input and bringing this to everyone’s attention. For the benefit of all. Jeff suggested getting 8″ length to have ample room for double clamps prevost parts call for 7″ and 6.5″ for my coach and Jeff indicated that 8″ work much better. So that is what I got.

[AL]

Bill,Jeff is correct,with the 8″ length you can double clamp the hose,that is what I used.