HI, I HAVE A SQT-28 MAZAK AND GETTING A 261 - HEAD LUBRICATION ALARM. I FLUSHED THE COOLANT AND REPLACED WITH MOBIL (LONG LIFE COOLANT). WHILE I REPLACED THE COOLANT I CLEANED OUT THE SUCTION FILTER. NEXT I REPLACED THE PRESSURE SWITCH. AFTER ALL THE NEW EQUIPMENT AND MAINTENANCE I HAVE PERFORMED ON THIS CNC, THE ALARM IS STILL PRESENT. I CALLED A TECH FOR A QUOTE TO TAKE A LOOK AT THIS AND DIAGNOSE THE ALARM. HE HAD RECOMMENDED CHECKING THE FLOW RATE AND ANY LEAKS IN THE SYSTEM. THERE ARE NO LEAKS AND I DON'T KNOW HOW TO CHECK THE FLOW RATE. HAS ANYONE EVER HAD THIS ISSUE AND HAD IT RESOLVED. ALTHOUGH I MIGHT HAVE THE TECH TAKE A LOOK AT THE MACHINE. I WOULD LIKE TO KNOW IF THERE WAS SOMETHING ELSE THAT I CAN CHECK. BECAUSE IT WILL COST ME NEARLY $2,000 FOR THE TECHNICIAN. THANK YOU IN ADVANCE.