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Old 1 Week Ago
turnkey turnkey is offline
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Default Leaking valve

Did a soapy water air leak search under the bus yesterday. This is what I found. Problem is I don't know what it is. It is located just forward of the drive wheels on a cross member. There is a center air tank mounted behind this cross member. The valve has three fittings leaking.
What is it?

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Quote:
Originally Posted by turnkey View Post
Did a soapy water air leak search under the bus yesterday. This is what I found. Problem is I don't know what it is. It is located just forward of the drive wheels on a cross member. There is a center air tank mounted behind this cross member. The valve has three fittings leaking.
What is it?

Attachment 71283

Attachment 71284

Our coach has the same issue. The square aluminum check valve on either side cracked. They split at the thread sections. What looks like a valve between them I think is a manifold. The check valves are Humphrey C-125. I'll get the shop to R&R them. I don't bend good enough to get to them. https://www.amazon.com/HUMPHREY-C125.../dp/B07R8QPDH1
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Last edited by curtsprenger; 1 Week Ago at 10:57 AM.
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turnkey turnkey is offline
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Thanks Curt,I'm with you I'll find a shop to repair this. I'm not able to work up over my head very well anymore. But I wanted to be able to tell them what was leaking. Do yo think just the Square check valves need replaced, or should the whole manifold be replaced while at it? Also, what does this valve do? I think it is some kind of relay or control valve for the brake system.
Thanks for your quick reply, very helpful.
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I posted three weeks ago here on WOG. Here is the link https://www.wanderlodgeownersgroup.c...ad.php?t=37303
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Geez Curt I saw that post. I didn't remember or relate it to my problem. There are three of those Humphry check valves on that manifold. All three of mine are leaking. I will order three. I planned to hit a WW William's when I get to AZ for an Allison service. I'll have them replace at same time. I don't think I'll have a problem between now and then, a few weeks. It's a very slow leak.
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The Humphrey C125 check valve in the Amazon link says it's a 1/8 NPT port.
Is that the right one? it looks to small.
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Quote:
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The Humphrey C125 check valve in the Amazon link says it's a 1/8 NPT port.
Is that the right one? it looks to small.

I know of two that were installed on a PT, 1/8". I have two here in the original bag labeled C125, 1/8".
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Quote:
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The Humphrey C125 check valve in the Amazon link says it's a 1/8 NPT port.
Is that the right one? it looks to small.
Yes, Humphrey C125 check valves have 1/8" NPT ports.

1/8" NPT = .405 inch Nominal Outside Diameter Pipe OD (inches)
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Thank you both, will order the 1/8 NP
t
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Humphrey C125 check valves arrived today.
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714 269-6187

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