M-1078 Trailer Supply Air Valve

[Pointman0853]

I have one on the dash panel that leaking...

Looks to be a Haldex #20025

Anyone ever replace one, and am I on the right track?

Pointman

 

[coachgeo]

If you've not done so already; there is a good number of threads on Supply Air Valve topic. Search via google advance (search feature in here sucks)

 

[FloridaAKM]

If it is leaking, replace it now or later as it will only get worse. Coachgeo is spot on with his last post on the matter!

 

[tennmogger]

Searching is good.......but.......there are layers of knowledge on newer surplus, like FMTVs. Looking at threads from 3 or four years ago will give misleading or blatantly wrong information. Over the years the 'opinions' change and the answers become more correct. Getting an updated, knowledgeable answer, even a few words, from the 'old timers' can really help solve a problem. I get frustrated when a question is answered by "did you search", time after time until the OP slinks quietly away in shame.

 

[Pointman0853]

Thank you Tennmogger. Its easy to simply dismiss posts by saying, "Go do a search", like I haven't done that already? At this point, I'll simply pull the offending valve and head to the parts house for a replacement. In my 'searching' process, I have found no useful information on the web or this site. If I have time,
I'll post up what I have found in the hope that the next person may have some newer useful information to use.

So far, my best resource has been a retired friend who was a mechanic for the CDF, and later Orange County (CA) Fire Authority and worked on large trucks with similar air brake systems.

 

[Lmtv772]

Searching is good.......but.......there are layers of knowledge on newer surplus, like FMTVs. Looking at threads from 3 or four years ago will give misleading or blatantly wrong information. Over the years the 'opinions' change and the answers become more correct. Getting an updated, knowledgeable answer, even a few words, from the 'old timers' can really help solve a problem. I get frustrated when a question is answered by "did you search", time after time until the OP slinks quietly away in shame.

That is exactly the reason I get annoyed when I read about how I should waste my time on 'debating' on wrong, illogical and false information. The FMTV forum has changed and people, like myself who know these trucks are discouraged to say anything in a thread filled with false 'opinions'. I for my part feel not wanting to input anymore after having to read through piles of newcomer opinions and irrelevant jokes.

 

[Lmtv772]

Thank you Tennmogger. Its easy to simply dismiss posts by saying, "Go do a search", like I haven't done that already? At this point, I'll simply pull the offending valve and head to the parts house for a replacement. In my 'searching' process, I have found no useful information on the web or this site. If I have time,
I'll post up what I have found in the hope that the next person may have some newer useful information to use.

So far, my best resource has been a retired friend who was a mechanic for the CDF, and later Orange County (CA) Fire Authority and worked on large trucks with similar air brake systems.

I'm sorry Pointman, I'll read through your post again and see what I can do to help you.
I PM'ed you

 

[simp5782]

I have one on the dash panel that leaking...

Looks to be a Haldex #20025

Anyone ever replace one, and am I on the right track?

Pointman

Haldex number is KN20025 can be gotten from most places. TruckPro/Meritor Number is R955288239

 

[Lmtv772]

Haldex number is KN20025 can be gotten from most places. TruckPro/Meritor Number is R955288239

He knows which part it is. But that might not be the issue that's causing it

 

[scottmandu]

I just replaced ine last week. I matched it up with an aluminium bodied valve tha cost 37 bucks.

 

[coachgeo]

Searching is good.......but.......there are layers of knowledge on newer surplus, like FMTVs. Looking at threads from 3 or four years ago will give misleading or blatantly wrong information......

Good points.

 

[Pointman0853]

Than you Sir! This is information I can use TODAY. Part ordered. Now on to the next new thread, and providing bait for fresh forum abuse!

Pointman

 

[coachgeo]

.... "Go do a search", like I haven't done that already? .....

Geez you guys get testy easy. How funny.

Pointman. Understand your points.. (pardon the pun) tis why mentioned right from the start.. "if you've not done so already" Besides only suggested search cause this has been a VERY recent topic with discussion on valves being found only one or two pages back. BTW...... searched first as well before responding the first time; which showed you'ld only participated five times in a year and half since registering. Looked like you might be a bit of a newby on bulletin board use; otherwise, would not have mentioned searching first. That and was running out the door or 'Ide of thrown a link or two your way myself. Sorry about that.

Tennmogger your spot on about old info might mislead. To help avoid, when one searches... take advantage of Advance search features, where one can have results listed various ways such as in date order. What tends to work best is to search only within the last year.

simple solutions, no need to get the hackles up.

 

[Oxyacetylene]

Just in case anyone needs this, and please correct me if I have anything wrong. Most of the Haldex stuff is available through Napa, and most any heavy truck parts house. Napa is just easy and widespread.
http://www.steelsoldiers.com/showthread.php?140345-Air-Brake-Info-and-Troubleshooting

 

[Pointman0853]

My UPS guy brought a little box of joy yesterday. So now I will pull the panel and replace the leaky valve.
If anyone is interested in step-by-step photos, just let me know. Should be fairly easy. . Well, at least easier that the upcoming Fan Clutch replacement..

Pointman