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Sorry about the late response. I installed the valve body heater that came with some of the trucks and that fixed it to the point, were it only took about 5 to 10 minutes for it to start working. (about the time to get all the air tanks pumped up) I can look, might still have one of the...

Mine did that whenever it was cold. I would let the truck warm up for a while and it would miraculously start working again. Try to let it warm up for a while with the air charge button pushed in on the side of the shift selector box. Soni

Topping it off with a non synthetic 15W 40 motor oil would probably be safe, if you don't want to change all the fluid.

I talked to Caterpillar and they told me to use 15W 40 weight synthetic engine oil! So in my M920 I used the synthetic 15W 40 Heavy Duty Diesel and Marine motor oil made by AMSOIL. Soni

Ok...here is a quick overview: -Stock HEMTT wheels are 20"x10"wide / they will accept 395/85-R20s, 14.00R20s and the 16.00R20s / Front needs modifications to the drums to fit / Rear needs longer studs or modified budcaps to be legal / Wheels have the wrong offset to track the same (front is...

Wow....did not realize there where different drums....that's certainly good info to have!! Thanks Soni

Thanks James, The M870A1 is definately my favored trailer and the addition of the rear ramps made it even more versatile. We also installed an automatic pintle hitch with the necessary air gladhands and a 2"receiver for hitching up the lightweight "stuff". I still got to make a lid for the...

Don't worry Eldgen....It's the same one, the morning after I got it home and before I put the 1600R20s on it.....I wish I would have bought more then one....I could have sold mine 20 times over already!....Lol :beer: Thanks again for the heads up....I will owe you forever.... Soni

Well, even thought this thread has gotten a "little off topic" lol, it is certainly all good and usefull information! But since I would like to try to keep this Tech & Tips thread relevant to the M915 series trucks, I AM going to start a new, seperate thread with the M915-M920 Tech and Tips...

You are very welcome James.....I certainly did not mean to insult you by calling you "DEER" I meant to say "ELK" of course! lol :jumpin: Soni

Ok Eldgen, you're being funny now!....That's not in any way what I was trying to say! lol..... first of all I would NEVER generalize on issues like that and second of all, if there where indeed a few "bad apples" out there.... YOU ARE CERTAINLY NOT IN THAT CATEGORY!!!!!! I have been following...

This is good advice and I would like to add two more things to the above tips: (1) this first one is obviously not an issue for you in Florida...lol, but the oil pump can be disconnected from the drive, for extreme cold weather operation. There is a 1/2" thick steel spacer, that's held on by...

Well, there is certaily no need to apologize or leave the thread..... I'm actually very excited that this "feeler thread" as someone called it has taken off so fast, and I am convinced that it will be way better this way, then I had envisioned it..... :jumpin: There is no way that I can cover...

Yes... I know this is kind of cheating, because I posted this in an other thread already, but it really needs to be here....so there...lol Here is a quick scetch of the area on the front drums of the M916-M920 trucks, with dimmensions, that have to be addressed (ground or machined off) in...

Yup Eldgen,...I figured that out the hard way too.....lol The weird 12-24V electrical system had me puzzled more then once! Like for example when I tried to plug in my cell phone in to the cigarette lighter for the first time, and it started to make the most god aweful noises......I guess it...

Well....thanks guys....that looks pretty anonymous I guess....Lol Ok, so I will try to dig up some old pics from the "Early Days" of my project and get started.....I could also use some input form you guys, as to what areas you're mostly interested in....that would give me an idea what...

Ok...so I have owned my M920A1 since 2003 and I have put over 110,000 miles on it since then. I have done lots of mods (some better then others...LOL) and had to deal with my share of problems and breakdowns. Lately I'm getting a lot of questions from folks that benefited from the recent...