CAT 299D won't move

[Jeffrey Bandel]

I had a chance to look at the machine today. It's embarrassing, but I can't find the soft key. I have is a screen on the driver side which shows warning lights. It doesn't appear to be interactive.

 

[Mark250]

if you don't have this screen on the right hand side you do not have access to the diagnostics for the machine

 

[Jeffrey Bandel]

I don't have that screen. I guess that puts me back to square one.

 

[DozerTech78]

I don't have that screen. I guess that puts me back to square one.

You have the “Basic” display with one gauge (fuel) and 6 buttons to the right, correct? The DPF lamp which is illuminated (as you have stated) generally means the machine is in regen but can also indicate a fault in the aftertreatment system.. its possible that the machine is derating itself due to an active fault for the aftertreatment system

When you experience the issue are you able to throttle up at all?

Just trying to gain some insight

 

[Jeffrey Bandel]

You have the “Basic” display with one gauge (fuel) and 6 buttons to the right, correct? The DPF lamp which is illuminated (as you have stated) generally means the machine is in regen but can also indicate a fault in the aftertreatment system.. its possible that the machine is derating itself due to an active fault for the aftertreatment system

When you experience the issue are you able to throttle up at all?

Just trying to gain some insight

Yes on the display.
It will start up and idle fast or slow. When I start to travel, I can only go somewhere between 6 inches and 3 feet. At that point, the machine just stops traveling and the parking light comes on. It is still running but won't move. Hitting the parking brake light does nothing. If I shut it off and turn it back on the same thing happens. It took me about 15 restarts to go about 10 feet.

 

[Jeffrey Bandel]

This is what it looks like when it is running but won't move. If you hit the parking brake button nothing happens.

 

[BigWrench55]

Nige will know best. But I believe that you have a tier 4 and not a tier 4 final. If you are not using def fluid for this machine, then you have just tier4. In that case your machine is in derate and most likely you will need to force regen the dpf. This can only be done through cat ET.

 

[Mark250]

here is some info that may be of interest
even thought you have emissions warnings and the machine will go into derate. I don't believe that is the cause of the machine coming to a complete stop.
there are two areas that will cause your problems apart from the interlock areas mentioned in an earlier post
throttle position sensor out of calibration there is a sevice letter for this concern
and faults with unintended motor speed either way you need CAT ET to diagnose and calibrate

 

[Mark250]

 

[Mark250]

here is explanation of motor speed faults

 

[heymccall]

I wonder??? Can that machine be retrofitted with a display monitor, like the 568-2041 kit?
I know it's a $1000, but, what's the cost of 2 road calls?

 

[Nige]

Special Instruction M0077883 is available on SIS covering the complete installation of the 568-2041 Kit.
The functions it contains do have to be enabled using ET. It's not plug & play.

 

[Jeffrey Bandel]

Thanks for the data. My thought is the temperature sensor. If the machine thinks it is hot (when it isn't) it may cause this.

 

[heymccall]

My gut says speed sensor, as it locks you out only after moving 6 inches. There is one on each drive, IIRC.

 

[Jeffrey Bandel]

My gut says speed sensor, as it locks you out only after moving 6 inches. There is one on each drive, IIRC.

I tend to agree. However the repair manual states if the alert is flashing: "A sensor on the machine may be faulted or has come unplugged. For tracked machines, check that the wiring to the drive motor speed sensor wiring is not damaged."
Mine isn't flashing though.

 

[heymccall]

Flashing says broken circuit. What about missing signal?

 

[Jeffrey Bandel]

I take that back. It is flashing. Is this the drive motor speed sensor?

 

[Nige]

Yep, that's it. You really need the Electrical Schematic..... I'll be in touch.
Each of those assemblies is actually two sensors. The four wires are: - a signal wire for each of the two sensors (green & white), a common power wire (red), & a common ground wire (black). This power comes from the machine ECM so it is NOT battery power. It's actually 8v DC stabilized.
Now if the assumption is that there is a sensor fault and because no Diagnostic Codes available therefore we don't know which sensor (#1 or #2, left or right side) may be giving the problem then there are four of them to diagnose.

There are two possibilities for each sensor. An FMI02 Code (Data Erratic, Intermittent, or Incorrect) or an FMI08 Code (Abnormal Frequency, Pulse Width, or Period).

So basically you're going to have to repeat each of the two procedures four times to be able to troubleshoot the speed sensors on both sides of the machine.

Below are the Troubleshooting Procedures in respect of the LH #1 Speed sensor. The procedures for the other three sensors are exactly the same but the wire numbers (for the signal wires) will change - that's why you need the Electrical Schematic...….

 

[Jeffrey Bandel]

Thanks.

 

[Nige]

I sent you a PM. Look in the top RH corner of the screen.