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CAT D5N XL

Catalin92

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The fuel tank level sensor error is registered by the Monitor System (030), not the Engine Control (036). Therefore it is not likely to be the reason why the Engine Control Fault light is on.
I hope that you checked the transmission oil level with the engine running & the transmission in neutral......
I checked the level with the engine running and the transmission on neutral, as for the red lamp I can't explain why it stays on, the errors are all those. I hope that's the problem. Do you have a scheme where the fuel probe is to replace it? What is the total amount of oil in the transmission?
 

Nige

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I checked the level with the engine running and the transmission on neutral,
That is good. Checking the oil level with the engine stopped can cause the transmission to be over-full.
What is the total amount of oil in the transmission?
Approximately 122 litres. This includes all the lines, filters, torque converter, and transmission case. If you drain the oil you will NOT get 122 litres out of it. Always fill it using the dipstick, not by pouring in a certain quantity of oil as indicated by the maintenance manual.
Do you have a scheme where the fuel probe is to replace it?
Here is a Troubleshooting procedure to check the problem. If you want an Electrical Schematic it will require the machine Serial Number to get the correct one (there are about 5 different versions). You may have a wiring fault in which case replacing the sensor will not fix the problem. Only the correct diagnostic procedure will give the answer.Illustrated belkow is the location of the fuel level sensor on the tank.

upload_2021-10-23_14-6-56.png
 

Attachments

  • CID0096 FMI03.pdf
    197.6 KB · Views: 4

Catalin92

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Hello. I'm back with news. It seems that the machine works well, in maximum load with very very very full blade (almost impossible to advance) the speed is at 1650-1700rpm, and at normal work pushed earth 1850-1900rpm. He had 2 moments when the revs do not increase even with the transmission on neutral, moment carw held 20seconds,then returned to normal. Active errors are not, but the bulb is on. Very strange
 

Nige

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Active errors are not, but the bulb is on. Very strange
I agree. Very strange.

With a very full blade and the machine forward movement almost stopped, 1600-1700 sounds acceptable for torque converter stall RPM.

If on one or two occasions the RPM failed to increase when requested there must be a problem somewhere. If there was no black smoke to accompany this refusal to increase RPM that sounds like a problem in the fuel supply systsm. I know that you changed both the primary and secondary fuel filters but it might pay you to blow out the fuel lines with compressed air and also to drain any water or sediment from the fuel tank. A possibility exists that there may be some contamination in the tank that is moving around and occasionally blocking the fuel feed line.

All you can do is continue to monitor the machine performance.
 

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  • Fuel Tank Drain.pdf
    181.9 KB · Views: 6

Nige

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Active errors are not, but the bulb is on. Very strange
A question. You turn on the key, the panel makes the self-test (all lights flash, the warning buzzer sounds, etc) then all the lights except the parking brake light should go off. Does the engine warning light also go off.? If the answer is yes, does the engine warning light come on immediately when you start the engine, or does the machine have to be moving for it to come on.?
 

Catalin92

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I agree. Very strange.

With a very full blade and the machine forward movement almost stopped, 1600-1700 sounds acceptable for torque converter stall RPM.

If on one or two occasions the RPM failed to increase when requested there must be a problem somewhere. If there was no black smoke to accompany this refusal to increase RPM that sounds like a problem in the fuel supply systsm. I know that you changed both the primary and secondary fuel filters but it might pay you to blow out the fuel lines with compressed air and also to drain any water or sediment from the fuel tank. A possibility exists that there may be some contamination in the tank that is moving around and occasionally blocking the fuel feed line.

All you can do is continue to monitor the machine performance.
Never smoke. We've already done that, we've emptied the tank, we've blown the fuel hose. I'm going to watch how it behaves. Thanks so much for the help,it was of great use to me
 

Catalin92

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A question. You turn on the key, the panel makes the self-test (all lights flash, the warning buzzer sounds, etc) then all the lights except the parking brake light should go off. Does the engine warning light also go off.? If the answer is yes, does the engine warning light come on immediately when you start the engine, or does the machine have to be moving for it to come on.?
Yes the test is done, all the lights turn on, and the buzzer on and the engine bulb goes off. When I start, I accelerate and then it lights up. I will make you a video.
 

Catalin92

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Yes I tried. And with the bulb on all the same errors display, with SERV CODE for the fuel level sensor.
 

Catalin92

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Hi again. The bulldozer still does not work fail to solve the problem, but now I have an eraore on the active engine 1273.04.Ma can you help locate the problem?
 

Nige

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Hi again. The bulldozer still does not work fail to solve the problem, but now I have an error on the active engine 1273.04. Can you help locate the problem?
1273.04 does not appear on my list of Codes for a D5N.
I think there may be a mistake because 1273 refers to the "Chassis Control" on an off-highway truck. Please can you check the Code and confirm, maybe post a photo of the Monitor Panel when the Code is showing.

Can you also give the machine Serial Number please. I looked back through all the previous information and did not find it.
 

Catalin92

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I attached the picture with the error and the series of the machine. Unfortunately at this time this error was no longer active, but in the morning it was. In an older comment from you this error was related to the pressure of the turbo.
 

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  • IMG_20211124_140945.jpg
    IMG_20211124_140945.jpg
    2.4 MB · Views: 9
  • IMG_20211124_140611.jpg
    IMG_20211124_140611.jpg
    1.6 MB · Views: 8

Nige

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In an older comment from you this error was related to the pressure of the turbo.
No, that was 273, not 1273. See below from my earlier post.
036 is the engine 273.04 - turbo outlet pressure sensor - voltage below normal

I will attach the procedure for 273.04 so that you can checlk the operation of the turbo pressure sensor.
I would also suggest to open and inspect all the wiring harness connections between the turbo pressure sensor and the engine control.
It would make sense that the engine performance would be affected if the turbo boost pressure could not be measured correctly.
 

Attachments

  • CID0273 FMI04.pdf
    408.4 KB · Views: 6
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