A B727-200 IN CRUISE DECLARED AN EMER AND DIVERTED WITH #1 ENG SHUTDOWN DUE TO #1 ENG PWR LEVER STUCK AT TKOF PWR CAUSED BY A LOOSE REVERSER DIRECTIONAL VALVE MOUNT BOLT JAMMING THE THROTTLE MECHANISM.

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ON SEP/XA/98; ACFT EXPERIENCED #1 ENG THROTTLE STUCK AT CLB PWR. INSPECTION REVEALED THAT #1 ENG THRUST REVERSER DIRECTIONAL VALVE MOUNT BOLT FELL OUT AND JAMMED THROTTLE. ON AUG/XY/98 I REPLACED THE #1 THROTTLE CTL DRUM SHAFT AND BEARING AND CRANK SUPPORT BRACKET PER MAINT MANUAL 76-12-41. PER MAINT MANUAL 76-12-41 STEP E(1) PAGE 205. THE DRUM SUPPORT BRACKET THAT THE THRUST REVERSER DIRECTIONAL VALVE WAS INSTALLED ON WAS NEVER REMOVED; AND THE DIRECTIONAL VALVE WAS NEVER TOUCHED. AFTER THE WORK WAS PERFORMED; ACFT WAS TAKEN FOR PWR ASSURANCE RUN. ALL CHKED GOOD. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE REVERSER DIRECTIONAL CTL VALVE HAS 2 MOUNT BOLTS SECURED BY LOCK NUTS. THE RPTR SAID THE MAINT MANUAL STATES THAT THE DIRECTIONAL CTL VALVE DOES NOT HAVE TO BE REMOVED TO ACCOMPLISH THE THROTTLE MECHANISM REPAIRS. THE RPTR STATED THE 3 MECHS WHO WORKED THE JOB DID NOT ATTEMPT TO REMOVE THE VALVE. THE RPTR SAID THAT SOME #1 REVERSER WORK WAS DONE ABOUT 30 DAYS PRIOR TO THE THROTTLE WORK. THE RPTR SAID THE WORK ON THE THROTTLE MECHANISM WAS ACCOMPLISHED ALMOST 1 MONTH BEFORE THIS INCIDENT. THE RPTR STATED THE FAA HAS MADE NO CONTACT.