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Recent content by Bigbert

  1. Bigbert

    Terex TA40 driveline issue

    Also check proper function of piston behind sensor. Moves without any restrictions? Any scratches, debris?
  2. Bigbert

    TA300 no crank

    You definitely need a N signal from gear selector to allow cranking of engine
  3. Bigbert

    Terex TA40 driveline issue

    Hi again, the switch is a simple on/off type. Pin in switch depressed like in sketch: Low diff. pressure, no BA code. High diff pressure, pin released, code BA coming up with oil temp. above 60 degrees Celcius, engine rpm below 1800 rpm. Background for temperature and speed: Diff. pressure of...
  4. Bigbert

    Terex TA40 driveline issue

    Hi AndyWofle, assume you got a ZF 6WG310 tranny in your truck. according to my documents "B8" code ist overtemperature retarder oil when braking downhill for longer time. "BA" is filter switch which is located in double filter head. There is some spring force when taking out. Usually filters are...
  5. Bigbert

    Samsung SL150 need wiring diagram help plz

    Hi Ottingsalvage, I have a copy of a wheel loader training course from 1990 or so. There are a few sketches of electric components. Please share your mail address in a conversation or here. I can share in PDF format.
  6. Bigbert

    Terex TA30 will not go into gear

    Hi Jcantu, I'll get you some info in a conversation. With no F or R signal nothing will get out of TCU and no solenoids will do anything.
  7. Bigbert

    Terex TA30 will not go into gear

    93 is basically a low level codeindicating an open circuit to reverse alarm relais, no reason not to go into gear. When pressing top button on gear switch and moving to F or R system does not catch gear, right? And no further code? So I'd assume not sufficient signals from gear switch. Unplug...
  8. Bigbert

    Doosan DA30 with ZF 8EP 320 Transmission goes into neutral whiles driving.

    Brian, I'm not sure what came first? Hen or egg? Losing converter pressure: Is it lockup clutch (LUC) pressure? Or converter back pressure? Presumably lockup as converter pressure is created via mechanical spring and piston. The question is: Does LUC disengage due to transmission going to N (A)...
  9. Bigbert

    544K road speed too slow!

    Hmm, MG2361, how to create a photo in 3rd manual, engine 2110 rpm at 0 mph travel speed? On the other hand 2100 stall is super high for machines from 2000. So lets wait what watglen will tell us.
  10. Bigbert

    544K road speed too slow!

    Watglen, in your post from Friday 2:01 PM transmission is in 4th, but engine rpm only 1655. This is far too low, should be close to 2200 rpm then. Even in stall condition engine got 2100 rpm. My assumption: There is an engine speed limitation set somewhere to avoid too high travelling speed.
  11. Bigbert

    544K road speed too slow!

    Hi Watglen, the 4 speed trannies usually are NOT equipped with lock up clutch, the 5 speeds yes. 15 mph looks like not shifting up to 4th. You are sure it is running in 4th? Then converter should produce lots of heat. Does it when travelling?
  12. Bigbert

    Doosan DA30 with ZF 8EP 320 Transmission goes into neutral whiles driving.

    Hi Brian, are you able to share TCU number/code? And have you any chance to get a readout of fault memory of TCU/ECU/VCU? Possibly the output speed signal is sometimes faulty. But this one is wired up internally. So not quite easy to fix in truck.
  13. Bigbert

    Doosan DA30 with ZF 8EP 320 Transmission goes into neutral whiles driving.

    Presumably the gear shifter is giving digital signals to VCU (vehicle controller), which gives CAN signals to TCU.
  14. Bigbert

    Doosan DA30 with ZF 8EP 320 Transmission goes into neutral whiles driving.

    So, I'd assume the issue is somewhere between gear shift connector and plug to transmission.
  15. Bigbert

    Doosan DA30 with ZF 8EP 320 Transmission goes into neutral whiles driving.

    Would you have the chance to swap gear switches from a good to bad truck?
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