Case 621D no movement

I missed a few sub codes, from my last post

03 Park brake not applied.
04 Output speed not 0 kph/mph.
05 Low transmission oil temperature.
06 High transmission oil temperature.
07 Low engine RPM.
08 High engine RPM.



Code for 2 08 05 is as follows
08 is main code of: Operator aborted calibration procedure
05 is sub code of : Low transmission oil temperature

You should have gotten a code 2 00 05, but maybe you pressed a button first?

It would appear that your transmission temperature was not hot enough. I would recommend trying to get the transmission hotter. I usually do a torque stall (hold the brake while in gear) for about 10 seconds or until the temperature gets to 120 degrees Celsius (warning light will flash). You don't want to overheat the transmission, so don't red line the gauge. I believe the transmission has to be at least 80 degrees Celsius to perform a calibration, and that is your sump temperature. I would warm transmission to at least 95C before trying a calibration.

The gauge on the display shows your torque converter out temperature, which is always hotter than your sump. (you cant see the sump temperature from the display)
You will have to work the transmission into the yellow line multiple times in order to get the sump temperature hot enough. You may have to do this more, depending on your outside temperature. You may need to cover the rads with cardboard too.
Here is how the manual tells you to do it.


Procedure to Heat the Oil
Torque Converter
1. Sit in the seat.
2. Start the engine and run the engine at low idle.
3. To measure the oil temperature with the
instrument cluster:
A. Press the program switch.
B. Press the up count switch to function 007.
C. Return the program switch to the OFF (center)
position.
4. Place the declutch switch in the OFF position.
5. Place the automatic switch in the manual mode
position.
6. Release the parking brake.
7. Move the transmission control lever to Forward
and turn the transmission control lever to 3rd
gear.
8. Increase the engine speed to full throttle and run
the engine at this speed until the instrument
cluster shows a temperature of 115°C (239°F).
9. Decrease the engine speed to low idle and move
the transmission control lever to the Neutral
position.
10. Wait and allow the converter temperature to cool
to 90°C (194°F).
11. Repeat steps 4 through 9 three times until the
temperature of the torque converter oil is 82° to
104°C (180° to 220°F).

Hi turbotoys,

clutch calibration will accept engine revs from around 800 to 1100 rpm, t/m in neutral, park brake on, t/m sump above 70 degrees C. So possibly block radiator with some wooden panel, cardboard plate, sheet metall. Temps after converter up to 120 degrees is not in issue for t/m or t/c. Also sump with 90 degrees is okay. (you are at standstill, above system might throw a code too high sump temp)

I did see temperatures climb fast yesteday by holding brake and raising rpm just did not want to cause any damage.
So i will do this again this weekend a few times to see if I can get temperature to that spot, I will also block radiator as suggested to keep temperature up.
On another note, can you tell me if the auto should function before the clutch calibration is complete. I feel like it should and I want to bring it up to the person i purchased used ECU before he tells me too bad. Thanks for your responses

I believe that the auto shift should function after a clutch calibration. Bigbert can probably verify this.

Was this TCU from a case machine? Do you know if it was from a case 21D series wheel loader?
If I remember correctly, auto shift was a option on some of the older wheel loaders, B and C series.

Hi guys,
I'm not sure whether there is limitation in function with or w/o clutch calibration. I'm afraid there is not. So there might be some other reason for no auto shifts. Is there a rocker switch at dash to switch to auto or in cluster?
The tranny wil shift also w/o clutch calibration, shift comfort might a bit worse. And you allowed to run w/o calibration.
At least B series was equipped with former ZF WG trannies like 4WG120, 150, 180, 200. No clutch calibration. Case switched to Ergopower possibly already with C series, definitely with D series. 4WG130, 160, 190, 210 with clutch calibration. Later at least with G series 5 speed t/m with lockup clutch. Not sure on E's.

Helllo, auto shift now seems to be working, not sure if it was just a user error or something i did. I am now only concerned about the high idle. It seems to be around 1500 or so if I had to guess. I forgot to go to display box 001 to check the actual RPM. I tried disconnecting the actual throttle cable to see if I could just manually turn idle down, but even with cable disconnected, still seemed to idle at same point. What can I check?
Thanks