D5G parking brake won’t disengage

Alanol said: Im now getting just 222 Click to expand... From what I read that means no Active codes. So was there something you found that was not okay at the throttle switch. Simon C

Alanol said: Is there a charge relief valve on the hystat? Could that potentially cause no pressure? Click to expand... See the attached which is the complete System Operation document for the hystat covering both hydraulic and electrical/electronic systems. It will hopefully help you understand a bit more how it works. As per Simon's question. What did you do to get rid of the 261 Blink Code.?

Nige said: See the attached which is the complete System Operation document for the hystat covering both hydraulic and electrical/electronic systems. It will hopefully help you understand a bit more how it works. As per Simon's question. What did you do to get rid of the 261 Blink Code.? Click to expand... I believe it popped up when I disconnected it and I erased it and never popped back up. So far people telling me it’s gonna be a mechanical problem so I’m gonna take engine and pumps out tmr is there anyway for them to come out together or do I have to take engine out first then pumps?

The engine & pumps are removed together according to the service manual, the. Split apart afterwards. The procedure has been posted somewhere. I’ll see if I can find it. EDIT: See the attached. The special tools listed are not mandatory, they only make the task of removing the assembly easier.

Nige said: The engine & pumps are removed together according to the service manual, the. Split apart afterwards. The procedure has been posted somewhere. I’ll see if I can find it. EDIT: See the attached. The special tools listed are not mandatory, they only make the task of removing the assembly easier. Click to expand... Ok thank you also is there a way to take the sun gear out to get it to roll?

You will need a slide hammer with an adapter that will screw into the thread in the end of the sun gear according to the procedure.

Nige said: You will need a slide hammer with an adapter that will screw into the thread in the end of the sun gear according to the procedure. Click to expand... I got the hystat and charge pumps out is there a parts diagram on those? Like how to disassemble the hystat pump to take it apart and put back together

Alanol said: I got the hystat and charge pumps out is there a parts diagram on those? Like how to disassemble the hystat pump to take it apart and put back together Click to expand... There is. See the attached. I suggest that you should study it carefully and ask yourself do you have both the tools and the required level of technical ability to perform this procedure. There are two identical hystat pumps, one for the left track and the other for the right. For you to have no pressure anywhere this would indicate that likely nothing in the pump stack is turning. So if that is the case, and if the problem is not in the coupling between the engine and the pumps (please post photos. We haven't seen it close up yet) then the focus is that either the input shaft to the hystat pump closest to the engine could be broken, or or maybe the charge pump has failed. Unfortunately there is no D&A procedure for the charge pump. As it is much simpler I suggest that you look at it first to rule it out.