MAINT WAS TAXIING A B767 WITHOUT THE HYD PUMPS ON WHICH DISABLED NOSEWHEEL STEERING; AND THEY PENETRATED AN ACTIVE RWY.

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I WAS RIDING THE R SEAT AND AN INSPECTOR WAS IN L SEAT TAXIING THE ACFT. I WAS RELAYING INFO FROM GND CTL TO THE INSPECTOR FOR THE TXWYS WE WERE TO TAXI THE ACFT FOR HIGH PWR ENG RUN UP TEST. THE INSPECTOR WAS UNFAMILIAR WITH THE AREA AND I THINK HE EITHER DID NOT HEAR ME OR THE RADIO OR WAS OCCUPIED WITH TAXIING THE ACFT. HE MISSED THE FIRST TURN OFF I TOLD HIM TO TAKE AND WE HAD TO USE THE SECOND TURN OFF FOR TXWY C. WE WERE TOLD TO HOLD SHORT OF RWY 25R AND I REPEATED THIS TO GND CTL. HE PULLED THE NOSE OF THE ACFT OVER THE HOLD LINE CAUSING GND CTL TO CALL FOR STOP. THIS CAUSED REJECTED TKOF OF ANOTHER CARRIER. WE PROCEEDED TO THE NEXT TURN OFF AND HE MISSED THAT ALSO CAUSING US TO HAVE TO HOLD SHORT OF RWY 25L. GND CTL TOLD US TO EXPEDITE DOWN THE RWY TO THE NEXT TURN OFF FOR THE TXWY; CAUSING ANOTHER CARRIER TO USE A DIFFERENT RWY THAT HE WAS SUPPOSED TO USE FOR LNDG. I HAVE POSTED A LETTER TO ALL MAINT PERSONNEL THAT STATION POLICY WILL DICTATE THAT A TAXI QUALIFIED PERSON FROM MAINT WILL BE IN THE L SEAT TO TAXI THE ACFT IN THE FUTURE. I WAS VERY CONCERNED WITH THE WAY THE ACFT WAS HANDLED; AS THE INSPECTOR DID NOT FOLLOW TAXI AND RUN UP PROCS. HE FAILED TO TURN THE CTR ELECTRIC HYD PUMPS ON BOTH TIMES HE TAXIED THE ACFT; CAUSING THE ACFT NOT TO HAVE NOSE STEERING. I FEEL THAT IF THIS INSPECTOR IS TO CONTINUE TO TAXI ACFT HE NEEDS TO ATTEND TAXI SCHOOL AND THEN HAVE ON THE JOB TRAINING ON THE ACFT HE IS QUALIFIED TO TAXI.