Hi, I'm servicing a Z60/34, serial number Z6013-12907, and when I raise the primary cylinder, the self-leveling delays. I've been thinking it's due to a lack of air bleeding. I've read the manual, and it tells me to connect a hydraulic hose between the two test ports on the fixed end of the slave cylinder, but I don't have a reference image or a clear idea of how to do it. Could someone help me?