Cat d6c torque

Did you select all speeds in F, R, and see if the pressure held constant, in Neutral position the drive coupling should spin fast, when you select a speed the coupling should stop and load the engine as the torque stalls, the same pump works the steering so as you pull the slew levers you should see a flick on the pressure gauge, so select 1st or 2nd speed and pull the steering levers both together then release 1 lever at a time, note what the drive coupling is doing. tctractors

What does the torque divider and sun gear look like in the flywheel? You keep pulling the torque converter but don’t mention the torque divider planetary.

Mobiltech said:

What does the torque divider and sun gear look like in the flywheel? You keep pulling the torque converter but don’t mention the torque divider planetary.

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I don't have a picture of the planetary but they look apsolutely fine i checked the flywheel and the gear inside of it they look fine

tctractors said:

Did you select all speeds in F, R, and see if the pressure held constant, in Neutral position the drive coupling should spin fast, when you select a speed the coupling should stop and load the engine as the torque stalls, the same pump works the steering so as you pull the slew levers you should see a flick on the pressure gauge, so select 1st or 2nd speed and pull the steering levers both together then release 1 lever at a time, note what the drive coupling is doing. tctractors

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Yeah we tried that,it stays in place,it does't spin at all,and it does not load the engine and i don't know why it seems that the whole problem.
I will take a video next time,but it is to far away for me to go every day so pls tell me your opinions on what should i do,so next time I go i will try everithing you suggested

If the shaft spins in Neutral with no speeds selected but stops when any speed is selected and thinking that you can clearly feel the 3 speed selections with a clear click out of 1st speed to neutral, the thought would be that the torque converter oil outlet pressure is way below spec', the inlet pressure can also be checked if you follow the test and adjust sheet, the drive divider failing usually ends in a savage lock up, i would be checking the outlet and inlet controls to the torque and also check the transmission pressure control that bolts to the transmission, just follow the feed pipe from the pump to find this, inside the slugs is a little screen and valve that need fine pliers to remove, study the parts book to see how these valves fit and come to bits as it's something easy to get wrong. tctractors.

I will try that

Hi guys, so i have checked torque outlet valve and it says 100 psi and there are no spacers to remove all the other pressure points are fine.Something strange hapened today ,when put it in gear and start lifting the dozer on the blade the torque shaft started to spin the other
direction but when the dozer is in neutral nothing hapens the shaft still turns slowly the corect direction.

One more thing the torque inlet valve has also 100 psi but we added spacer and brought it to 136 psi

This is an odd problem you seem to have, but as the main pressure is good and the torque outlet pressure is good but the engine fails to load up when placed into any gear, the fact that the drive spider started to spin backwards when the hydraulic pump was loaded tends to make me think it's the torque that has failed? so how about popping the torque out and getting a few pictures up of the internal parts, we will tell you how to put it all back together as there is little inside them to worry about, this would include the divider as i would think a drive has sheared somehow, when you go to take the torque out always remove the scavenge pump first before unbolting the case as damage can happen to the pump shaft from the torque weight, you also fit the scavenge pump back when the torque case is all bolted up, I have never seen the drive shaft rotate 2 ways. tctractors.

The outlet pressure is to high,it's suposed to be 42 psi,i don't know if that is relevant
I will go in a few days.I will kepp you guys updated