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Curious , I disabled the ctis and now I’m looking to free up room in the cab , the two air lines come in and route to the Eaton box. Then there’s the all the wiring....Can I remove all of this ? I haven’t traced everything yet and I’m sure I can figure it out but thought I’d ask for some...

And I do see now that low range simple locks the front axle in causing this box to leak

So this actuator box thing dohicky that controls air to my front hubs and low range has rusted through on the top. Anyone know the technical name and where I can order one ? 1990 m931a2

Pull the fitting from the horn and get an air fitting to an air gauge if you think low pressure. L The governor feeds that horn on a t line so basically if your governor is causing your air dryer to purge like normal then there is 120psi going to that horn Figured it out. Air pressure was...

No the wipers function normally, the horns always had just a weak shreak sound, so I went to add a larger air horn and discovered there just wasn’t much pressure being produced

My horns have insufficient air pressure , curious if there’s a common issue where the air lines get plugged. I’ve been looking for a schematic to see which tank runs the horn and everything in between.

Ive had this truck almost a year and just before winter I noticed the truck rocked back and forth like there was a 2x4 strapped to the front tire making it undrivable anything over 5 mph , so I bought some new tires on rims thinking I had a bent strap ,and just swapped out the front I thought...

Did you ever figure out your problem. I am having the same issue

So I got the 5 flashing lights and it started deflating my tires . So I unplugged the box , replugged it in with no change. Then I tried the trick where you hold the run flat and emergency button to equal the pressure out in all tires which from what I understand is also like a master reset for...

I just picked up a m931a2 and today for the first time I engaged the front axle . There is a constant air draw sound for as long as I leave it engaged. Not sure if that’s normal or not Then I un-engaged the front axle , drove for a mile and noticed I’m leaking from the front ABS limiting valve...