160clc problems. Hydraulic stall.

[Diesel Dave]

See the speed sense solenoid (Y5) valve operation from the manual in screenshot below.
Suggest to monitor the speed sense solenoid signal to the two pump regulators by tee in a guage at the speed solenoid outlet port hose.

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[imgonnadigtochynaa]

Okay. And what should I see in this test? Pilot pressure decreasing as engine rpm pulls down?

 

[Diesel Dave]

Okay. And what should I see in this test? Pilot pressure decreasing as engine rpm pulls down?

As a load on the engine increases, the speed difference between target and actual engine speed becomes less.
The pump and valve controller decreases the voltage to the speed sensing solenoid valve which increases the speed sensing pilot oil pressure to the load piston.

 

[imgonnadigtochynaa]

So the pressure on the gauge should go UP as the voltage goes DOWN?
I should have 28v no load and theoretically 0v at full stall load?

I will get the stuff at the hydraulic shop to do that test.
Today I was able to see codes on the mpdr. Program Again it had every code imaginable. 10 codes in total. I should have wrote them down, the first code was for one of the pressure sensors, so I reverted back to monitor mode to see if it was working, and it was, then back to the fault codes and they were gone?
I'm wondering if I'm having an issue with the PVC controller communicating the fault codes?