I am having a similar issue to the original poster. The drawbar is clamping slowly the last .250", sometimes not far enough to engage the clamp switch. I took off the precharge line and it snaps all the way up. I removed the "muffler" from the valve and it snaps up. I am getting some air through the precharge side all the time. Is this normal, or is it supposed to only have air pressure just before the main line does? How does the precharge air do anything if the main valve is set to exhaust prior to engagement? It seems that any air the gets pushed through on the precharge side would just go out the exhaust port.
Thanks |