Dmurph2016

Sorry forgot to mention. It’s a 03 tri axle dump. I don’t have an air compressor but I’m sure I could borrow one.

I’ll have to check if I have an air operators engine fan, I have no idea to be honest. But I’ll be out there with soap tomorrow trying to see what I can find! Oh yeah, tomorrow will be fun trying to chase down leaks. I’m guessing for the lift axle to drop that fast it would have to be a pretty big leak.

When I get it cleaned up I’ll post some pictures! When I shut the truck off in the front engine area I can hear some air, but was told that since it’s air ride it’s the bags settling. Not sure if that is part of the leak. I’m going to get a spray bottle and start checking all the hoses and whatnot but figured I would ask as maybe there’s some common areas that leak and that would give me a bit of a head start!

With the truck running I don’t believe the pressure drops, will have to confirm later. But I parked the truck, both the needles were at 120 or so. Shut the truck off, went inside. I came back out about 2 hours later and the lift axle has dropped (it was previously in the up position) and the green middle had dropped to about halfway in the red. The red/orange needle had not moved. So I would say it’s a separate system. But, I wanted to check something so I held down the brake petal and the pressure of the red needle dropped like a sack of potato’s. I don’t have much experience with trucks, but I am willing to learn and appreciate any help, no matter how small it may seem.

I am going to get soap and water and start looking, but figured it can’t hurt to ask if anyone has suggestions on where to start. Green needle Would be primary correct? I have an obviously big leak if it dropped for 130 to the read in less than 2 hours. being that the truck is air ride, does that have anything to do with it?

So I just had my new to meet truck dropped off. It’s a 03 elite cl700. It’s been sitting for 2 hours now. The airgage has dropped. The orange needle hasn’t moved but the green needle has dropped from 130 to halfway in the red. Also my drop axle has dropped. I am assuming these 2 things are related. Where would I start looking for air leaks? Im a total noob to this so I have to start somewhere. edit* so it also appears I have leaks behind the dash. I moved the hvac vent controls and now on whatever setting it is on I can hear air. Thanks

Hey everyone, I wanted to drop by now that I have gotten my first truck to learn a bit and hopefully fix any problems that arise. I purchased a tri axle dump truck and my plans are to do asphalt with it this season. I currently don’t have my cdl ( I know doing things backwards) but I am taking the class here shortly. I purchased a 03 cl “elite” series. With the 427 Mack motor and a 8ll. Just figured I would write a quick post to introduce myself so if you see me asking a bunch of questions, you know why!

I’ve never understood why the DM series has the strange cabs, does anyone know the reason for it?

So I’ve saved up a bit more money for a Rolloff truck. I found a 08 pinnacle 13sp mp8 with 172k miles on it. Just looking for some info on the common problems with the motor and year. thanks

I’m wondering if a block heater can be added, I think in the winter it would really help starting

Dumb question, but did all trucks come with block heaters? Or is that an option?

So there’s a few trucks that I want to look at, they are about 6 hours away thought so I need to learn as much as I can first 1: 2000 Mack rd688 with 770k miles 2: 2001 Mack rd600 with 239k miles with an new reman engine (supposedly) 3: 1997 Mack rd688 with 380k miles 4: 1988 Mack rd688 with 700k miles 5: 2000 Mack rd688w with 421k I think the lowest mile truck would probably be the best but I’m not sure how many miles is too many to consider

I’m looking to buy a Rolloff truck and am looking for some info on the e7 motor in Mack’s from 1997-03 those are the years I’m looking at. I’ve found a few trucks that the mileage Ranges from 200-300k miles and 300-800k miles. How many miles can these engines go before a rebuild? Should I avoid the higher mileage trucks? thanks!