Hello again. A different 944 this time, same problem.
We replaced the steering selector valve and it still goes wacky.
Someone suggested that even the front cylinder could be defective and it seems like the rear because the rear does exactly what it is told to, while the front is lagging behind, trying to play catch-up, and so you are busy turning the steering wheel and watching the fronts, while the back wheels are fine.
Any who, we did some pressure testing on our own volition. I am unsure what the inside of the front cylinder looks like, but the following is what we found:
Lull 944E-42
S/N 0160008264
According to the following pressure readings, I am making an educated guess that the front steering cylinder is bypassing
I teed into the left side of the front steering cylinder
Pressures as follows:
Holding steering wheel all the way to the right, at idle, it will build pressure to 1,500 psi
Holding steering wheel all the way to the left, at idle: 1,100 psi
I then capped the cylinder fitting, & plugged the tee, to deadhead.
Steering right, deadheaded: 2,200 psi
Steering left, deadheaded: Big Fat 0 psi, nada, zilch , nothing
Compare to the right side, just for kicks:
Teed in, steering right: 2,600 psi
Steering left 0 psi
Capped, plugged, deadheaded, steering right 2,600 psi
Steering left: 0 psi
Or am I missing something here?
Let us get a good educational discussion going here, I am eager to collect all the info I can. Information is power. Thanks.