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Something I did recently caused my low air alarm to start working again. I had hoped it had been removed / disabled in the field, but after nearly ****ting my pants in a closed metal rv storage unit upon start up, I've somehow caused it to work again. It was the first time I've ever heard it...

Hello, How do I remove the pin that holds the red and yellow haldex air brake valve in place? Is there a name of tool required? Sent from my SM-G955U using Tapatalk

Saw it on Amazon while ordering synthetic gear oil. Put it in my cart but haven't ordered yet. Any thoughts? Eventually I'd like to get a hotstart or Espar system for air and engine heat, but that's a long way off (hopefully not more than a year though). This seems like an easy solution to...

May be a dumb question, but I've never had to do it before.. I am unhook in the hydraulic jack to the spare tire. How do I determine the size of the fitting that will plug the line prior to unhooking? Most of the fittings have been army painted over, I can only see a "-4-4-4" on one fitting...

Had an odd occurrence I thought I would share. I took my truck to the cat dealership for an initial service, (will do another diesel mechanic now that I have a baseline). When I picked it up I noticed the inlet air heater light was on, but it was cold so I didn't think anything of it. Next...

Is the hydraulic system on the m1088a1 an open or closed system. I need to remove the spare tie hydraulic jack and am wondering if I need to be prepared for a few gallons to leak out, or the entire system. Likewise, I need to learn how to refill it and close it back up. I can't seem to find...

Before I dig into the TMs, can anyone help me identify the two pictured here. It looks like I have a bit of hydraulic oil leaking from the link here (I've never noticed any drips before). Additionally in the 2nd picture, does anyone know what the specific steering linkage part number is? I...

Has anyone setup dual alternators on an lmtv or fmtv? I'm thinking of putting a 12v battery bank in the cab, and am thinking of a dedicated alternator for it. Sent from my SM-G955U using Tapatalk

Does anyone have an HET in Oklahoma? I'd love to come take a look at the operation of the rear steer and suspension setup. Sent from my SM-G955U using Tapatalk

Tm states max gradient for m1088 is 30% and all other models are 60%. Any idea why? Sent from my SM-G955U using Tapatalk

Looked in the tm last night but couldn't find it in the first 400 pages. Figured I'd ask before looking again tonight. Is it associated with the chemical detector, or does the detector mount on top? It's mounted in top of the air breather. I thought I took a more clear picture, but here are...

Anyone with an m1088, how often does your auxiliary tranny cooler kick on? I've never seen the fans run on my radiator, but haven't ever had a load on it, or driven long or hard enough for it to be hotter than a normal temp. Also, how necessary is this cooler if the fifth wheel is being...

Hey all, I hope you are doing well. A recent post on a m1078 tranny got me thinking. Was just curious how hard of a shift from 2nd to 3rd and out to 4th is. Mine takes quite a bit of throttle to get up and going and is quite a big shift. That being said I wouldn't expect it to be overly smooth...

Oops. It was the end of the day and I was trying to complete my tear down for painting. I removed the ctis ecu from its mount, without noting the order for the washer, ground screw, ground wire, and ecu. Before putting it back together and running power again, can anyone around their truck...

Is there a position where the brake lights activate only when pressed? Turn signals and all other indicators work great, but in all settings I've tried so far, brake lights are always illuminated. Very possible it's user error as I'm the only one at the shop testing. Sent from my SM-G955U...

Hope everyone is doing good. I'm beginning to get to the point in my build where the work needed, or preventative for the truck is past my knowledge, tool capacity, time availability etc etc. I've visited the CAT dealership to schedule service, and also asked for recommended HD mechanics around...

Hope everyone is doing well. I've been obsessing over overland/expo vehicles for the past several years. After overcoming some health issues, and saving up enough money, I'm preparing to take begin the build. I estimate it'll take 6-9 months to complete, so would like to purchase by Oct 15th, to...