What was found
CLIMBING THROUGH FL210 FOR FL230 YELLOW CAUTION AROUND RIGHT ENGINE OIL PRESSURE. QTY INDICATION WAS ZERO,BUT TEMPS WAS GOOD. REQUESTED TO ATC LEVEL OFF AT FL220. EICAS MESSAGE DISPLAYED RIGHT ENGINE OIL PRESSURE. RAN THROUGH CHECKLIST. RIGHT ENGINE SHUTDOWN AS INSTRUCTED IN CHECKLIST WITH AN EMERGENCY DECLARATION FOR DIRECT KILN. ATC DIRECTED KILN AND A DESCENT TO 11000. AIR TURN BACK TO KILN WITH ONLY LEFT ENGINE IN OPERATION. TAXI TO RUNWAY WITH NO EMERGENCY EQUIPMENT REQUIRED. AIRCRAFT GROUNDED FOR CORRECTIVE ACTION. UPON INSPECTION OF RIGHT ENGINE, MECHANIC OBSERVED GEAR BOX DRIVE PLATE NOT INSTALLED. PERFORMED WINDMILL INSPECTION IAW B767 AMM 72-00-00. NO DEFECTS NOTED. RIGHT ENGINE OIL WAS SERVICED AND GEARBOX DRIVE ADAPTER PLATE INSTALLED. INSPECTION AND LEAK CHECK IAW B767 AMM 72-00-00 SATISFACTORY. NO FURTHER DEFECTS NOTED. AIRCRAFT WAS RELEASED TO SERVICE.