Complete Hardware	Disassembled for clarity
New 1 1/4" collar upgrade attached to 1 1/2" collar component assembly and mounted onto an A1B Light Fixture Assembly.

MEMO: FOR A1BC

WE HAVE MODIFIED THE A1BC COLLAR TO PROVIDE FAR STRONGER HOLDING OF THE LIGHT FIXTURE ASSEMBLY, TO PREVENT OVERTIGHTENING, AND ELIMINATE THE POSSIBLE RELEASE OF THE LIGHT FIXTURE FROM THE COLLAR CLAMPING SYSTEM.

THIS UPGRADE IS FOR EXISTING A1B ASSEMBLIES WITH THE OLD A1BC COLLAR ASSEMBLY WHICH CAN EASILY BE IDENTIFIED BY THE SPLIT END WITH A CROSS-BOLT FOR TIGHTENING INSTEAD OF THE NEW SCREW-ON ALUMINUM END-CAP IN THE 1 1/4" PLASTIC PIECE.

THE 1 1/4" SPLIT-END PIECE CAN BE UN-BOLTED FROM THE 1 1/2" BOOM-SLIDING BODY PIECE. THEN THE NEW REPLACEMENT 1 1/4" COLLAR PIECE CAN BE BOLTED ON IN ITS STEAD. DO NOT OVERTIGHTEN THE CONNECTING BOLT OR THE THREADS CAN BE STRIPPED FROM THE 1 1/2" BODY PIECE. IF THE END OF THE BOLT STICKS OUT INTO THE BOOM SLIDING HOLE OF THE 1 1/2" PIECE THEN CUT OR GRIND OFF JUST ENOUGH OF THE BOLT TIP TO CORRECT THIS INTERFERENCE ISSUE. THEN ASSEMBLE SO THAT THE TWO PLASTIC COLLAR PIECES ARE SECURE TO EACH OTHER.

THEN, TO ATTACH THE NEW COLLAR ASSEMBLY TO THE LIGHT FIXTURE BRASS BALL, PLACE THE COLLAR ALUMINUM RING OVER THE BALL FIRST (ALONE, DETACHED FROM THE COLLAR ASSEMBLY). PRESS 1 1/4" PIECE OF THE NOW-REASSEMBLED COLLAR BODY ON TO THE BRASS BALL. ALIGN THE COLLAR ASSEMBLY AND COLLAR ALUMINUM RING. SCREW TOGETHER UNTIL DESIRED TIGHTNESS IS REACHED.

THE ALUMINUM RING SHOULD COMPLETELY COVER THE THREADS ON THE PLASTIC BODY PART WHEN INSTALLED CORRECTLY. BE CAREFUL NOT TO CROSS-THREAD THE PARTS DURING THE ASSEMBLY PROCESS. THEY WILL SCREW TOGETHER EASILY AT FIRST WHEN ALIGNED CORRECTLY. THEY SHOULD GET SOMEWHAT TIGHTER UNTIL THEY COME COMPLETELY TOGETHER. HAND TIGHTENING SHOULD BE ADEQUATE TO ACHIEVE THE DESIRED HOLDING STRENGTH. DO NOT USE A WRENCH TO TIGHTEN THE ALUMINUM RING AS THE TORQUE APPLIED MAY DAMAGE THE THREADS OF THE COLLAR ASSEMBLY.