Foretravel Owners' Forum

I've posed this question before and I don't think I ever received any responses.  I'm planning to overhaul my air tanks/fittings to address some leaks and some strange behavior.  I've purchased new pressure protection valves because when I tested my system by bleeding air off of the aux. air connection both front and rear air tanks dropped below 40psi and continued to allow air to pass (at a slow rate).  My understanding is that the pressure protection valves should stop delivering air to the aux port below 60 or 65 psi.  These are the pressure protection valves that I have purchased:

Haldex 1/4" NPT Pressure Protection Valve (https://www.fleetpride.com/parts/haldex-air-valve-90555396)

Since I have to disassemble all of the fittings past the pressure protection valves, there are also some check valves so I'm going to replace them too.  In my search for parts I have found this style of check valve:

Haldex KN23080 Air Brake Reservoir Check Valve + Cross Reference | FinditParts (https://www.finditparts.com/products/368723/haldex-kn23080?srsltid=AfmBOooqnbvP6yPc8CbbAXdk4WZccXIW9E4Mnt2FSnfz2s-PwjD8FQn7)

and also this style of check valve:

https://www.grainger.com/product/55RT94?gucid=N:N:FPL:Free:GGL:CSM-1946:tew63h3:20501231

Obviously there is a significant price difference but also a significant size difference.  My question is, what are the practical differences between these two check valves and where would one be more appropriate than the other?  I know the general consensus will be to buy the expensive ones but I'm interested to hear other's experience with these.  For what it's worth, the original check valves at the front and rear tanks look like the larger ones although I have found that all of the check valves in the auxillary (HWH) compressor lines are the latter style including the one between the compressor and the pressure switch and also on both slide manifolds.

On our much older coach, the check valve at the inlet of front and rear brake tanks is a Haldex KN23000.

Part Number Collection (https://www.foreforums.com/index.php?topic=11472.msg225768#msg225768)

Like this one
World American WAKN23000 Air Brake Reservoir Check Valve. (https://www.finditparts.com/products/1435120/midwest-truck-and-auto-wakn23000?sctx=eyJzIjoia24gMjMwMDAiLCJzb3VyY2UiOiJzZWFyY2hwYWdlIiwicHJvZHVj%0AdF9pZCI6IjE0MzUxMjAiLCJyZXN1bHRfY291bnQiOjEwMDAwLCJyZXN1bHRf%0AaWR4IjozfQ%3D%3D%0A&ga_list=Search%20Results%20v3)

Mike

an '02 should have the same setup as an '03 and I believe the check valves Mike mentions are the same as were in our '03.

Here's the parts manual for reference 

I am getting message that the file is corrupt.  I downloaded a second time and same message.

The KN323080 is 1/4"
KN23000 is 1/2"

If your coach has the push on air fittings, you better buy all new fittings. Once you remove the hose there is a very good chance they are going to leak. 

I believe the older coaches used nothing but the compression fittings were on the newer coaches they use nothing but push on.

If you mean the parts manual, it comes up fine for me.  I let Steve know.

Michelle that parts manual will certainly prove useful and what an amazing document.  I assume that this manual was not typically delivered with the coaches to the customer.  Do you know who originally sourced this and how they got it?  I also assume that Foretravel does not hand these out upon request.  At any rate, thanks so much for sharing as this document appears to be at least 95% accurate for my 2002 as well.  Thank you!

Foretravel absolutely won't hand these out - we asked about getting one for our 2000 last week and were told flat out "no".  I have no idea how the procurers were able to get the three we have in the Media section.  Would love to have others. 

I have the 2001 U270/U295 Parts Manual if anyone would like it.
I tried to insert it here, but it says the file is too big.

I would love to get a copy of that.  My coach is 2002 but between the 2001 and 2003 parts manuals i would think most everything would be covered.

Is it different from the 2001 U270 parts manual in the Files library?




Your slide mechanism and air awning (if you have one) will be unique to 2002, but I don't think either are in the parts manuals.