Technical accumulator depressurization for oil change in DCCT shifting system?

[Buko]

Hi, I would like to change oil in that gear shifting device that is on DCCT gearbox. there is an option In Multiecuscan for "accumulator depressurization" so I guess that oil from it will go back to that plastic oil tank from where I can suck out and then change with new one and make Cluch drain so it will be sucked back into the system? but there is info to disconnect electric pump, where is it? Or maybe there is a different way to change oil in that system? there is some in that plastic tank but it's not the one that goes to hydraulics just from that tank lite braking fluid

 

[The Panda Nut]

I cant answer specifically, but any hydraulic system that has residual pressure in it, including major hydraulics, diesel and the like s of CItroen suspension and this type of gearbox may cause injury if not depressurized before dismantling. Normally there is a valve that lets the oil backinto the reservoir via return pipes. Depressurizing removes the risk of injury from injection through the skin, and avoids mess. It will allow drainage of all the fluid in the system so good for the job.

 

[Buko]

but there is no valve, it's this:

 

[s130]

You need to look down at the gearbox and locate the hydraulic actuator mechanism. This will have the pump and an accumulator reservoir. The pump should have some form of cable and connector associated with it. Unplug it.

NOTE! I've never done any maintenance procedures on DCCT or Selespeed transmissions. I'm just pointing out how to possibly turn off/disconnect the pump.

 

[Buko]

In this container there is this oil (because it is on the gearbox) and there is one plug but is it the pump?

 

[The Panda Nut]

I would guess the gearbox robot has an electricalo connection and that this will power the pump that presuriuizes the system. Likely its plugged into that robot and needs removal to isolate it. I think your pucture ios likely the thing. I would check and male sure there is nothing else. Im hoping someone will come along and help you with this. There have been a few posts about the gearobx robot in the Ducato forum recently. Have a look back and you may find someting relevant. Sorry not to be able to help.

 

[Taslima]

Yesterday this warning light came off. Then suddenly when I stopped the car its engine went off. Even the ignition went off as well. Tried to move the wire of the battery then the car’s ingnition started on but the problem is the whole clock screen disappeared. No lights and nothing is appearing. What can I do?