groundog
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on my 915A1 i get air from the emergency connection on the front but not the rear---suggestions?yes the valve is open but still no air from the rear----
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emergency air connection
- Thread starter groundog
- Start date
on my 915A1 i get air from the emergency connection on the front but not the rear---suggestions?yes the valve is open but still no air from the rear---
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- Monrovia, Ca.
Valves are backwards. 
Trace it back to the source. maybe it's been plugged or pinched.
Trace it back to the source. maybe it's been plugged or pinched.
KsM715
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Did it have a cover on it when you picked it up? Mud daubers (wasp like bee's) may have clogged it up. If you have them in AZ.
*edit* Just to satisfy my curiousity, you do know that some of theMil valves are backwards from the civy counterpart. (handle inline with the airline is closed)
*edit* Just to satisfy my curiousity, you do know that some of theMil valves are backwards from the civy counterpart. (handle inline with the airline is closed)
3dAngus
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I had the same problem, came on here and reported, and was told to look for dirt dobbers clogging up the holes too. Sure enough, there was mud in there. I got a screwdriver and scraped it out, and the air was just a flowing. I almost couldn't believe it, except a SSer was the source. Cool stuff.
- 10,792
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- Camp Wood/LC, TX
Silly question, by valve do you mean the valve on the dash or at the glad hand?
groundog
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at the glad hand----yes ---you are right about valves being backwards---but still no luck----I am going to remove air line from glad hand and check for air and if no luck I guess its under the truck I go and follow lines---glad I discovered this ahead of time
- 10,792
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On the 915's, you have to apply the trailer air valve for service/emergency air to be supplied to the rear glad hands.
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AND - It can't be applied while the spring brakes are set.
Danl
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Danl M915A1 case farm tractor
Ok on the m915 driving with no trailer and all air conect sealed, or caped off . how or whats the best way to run the trailer brake valve, trailer brake on or off?
Ok on the m915 driving with no trailer and all air conect sealed, or caped off . how or whats the best way to run the trailer brake valve, trailer brake on or off?
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THE -10 will have the answer to this SIMPLE truck operation QUESTION
groundog
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PRETTY SURE I TRIED WITH BRAKES OFF AND TRAILER BRAKE VALVE ENGAGED BUT WILL TRY AGAIN--I KNOW ON MY 931 I HAVE TO HAVE AT LEAST 85-90 LBS AIR TO MAKE TRAILER BRAKES WORK---THANKS FOR ALL ADVICE---EACH NEW TRUCK IS A LEARNING PROCESS