THIS IS FOR BIGBLUE1. THE MODULE THAT YOU MENTIONED YOU WERE HOLDING BUT COULD NOT SEPARATE IS MOST PROBABLY THE OLDER VERSION. THE HARD TO GREASE VERSION. REALLY, YOU HAD DONE ALL THE HARD WORK. THERE ARE THREE AND SOMETIMES FIVE SMALL SCREWS THAT HOLD THE METAL PAN OVER THE RECIPROCATING PISTON AND THE GEARS. sIMPLY UNSCREW THE SMALL SCREWS. NOT THE 4 LARGE SCREWS AS THEY HAVE NOTHING TO DO WITH HOLDING THE COVER ON. THEY HOLD THE SLIDES IN PLACE. ONCE THE 3 OR ON SOME MODELS 5 SCREWS ARE REMOVED, THE COVER CAN BE JIMMIED APART. TRY NOT TO BEND IT. I REMOVED ALL THE SCREWS AND HAD TO PIECE THE INSIDES BACK TOGETHER. BUT IT WAS NOT TOO DIFFICULT TO FIGURE OUT HOW THE TWO SLIDES WERE ORIENTED AND HELD IN PLACE BY THE 4 LARGE SCREWS. MY ORIGINAL WIPER GEARBOX HAD THE 5 SMALL SCREWS AND THE USED REPLACEMENT HAD ONLY THE THREE BUT IT WORKED FINE. HOPE THIS HELPS YOU.