ACR MLG MECH DID NOT COMPLETE MAINT WORK FOR WHICH HE HAD SIGNED OFF AND APPROVED FOR RETURN TO SVC.

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ACFT ARRIVED AT GATE WITH A SQUAWK ON #1 CSD OVERTEMP. THE ACFT WAS TO GET A DAILY CHK. WHEN I WAS CHKING THE FLUIDS; I'VE NOTICED THAT #1 CSD WAS OVER SVCD. THIS WAS A 25 MIN TURN AROUND; SO THE CAPT NEVER DID GET OUT OF HIS SEAT. THE FLUID IN THE CSD WAS RED IN COLOR. I TOLD THE CAPT THAT I WAS GOING TO DRAIN THE CSD AND SVC IT TO THE PROPER LEVEL; I ACCOMPLISHED THIS AND RECONNECTED THE CSD; THEN TOLD A CO-WORKER TO TELL THE CAPT TO START THE ENG AND RUN IT AT IDLE FOR A SHORT WHILE. DURING THE RUN; THE CSD DID NOT SHOW THE OIL CIRCULATING IN THE SIGHT GLASS INDICATOR. THE ENG WAS SHUT DOWN SHORTLY BECAUSE THE CAPT OBSERVED THAT THE CSD WAS OVER-TEMPING AGAIN AND HE DID DISCONNECT THE CSD. WHEN THE ENG CAME TO A COMPLETE STOP; STILL THERE WASN'T ANY FLUID IN THE SIGHT GLASS. I SVCD IT AGAIN TO THE PROPER LEVEL AND RECONNECTED; THEN THE CAPT RAN IT AGAIN AND THE SAME THING HAPPENED; OVER-TEMPING; DISCONNECTED IT AND SHUT DOWN. THE ENG CAME TO A STOP AND I RECONNECTED IT AGAIN; SVCD IT SOME MORE; TO AT LEAST THE BOTTOM OF SIGHT GLASS AT THIS TIME THE LEAD TECH TOLD ME TO CLOSE AND SECURE THE ENG; BECAUSE WE DIDN'T WANT TO DELAY THIS FLT ANY LONGER; THEN I TOLD HIM THAT THE ENG HAS TO BE RAN AGAIN TO DISCONNECT THE CSD; THEN WE DECIDED TO TELL AND INSTRUCT THE SKIDDER TO DO THE DISCONNECTING AFTER START UP. I COMPLETED ALL THE PAPERWORK IN THE LOGBOOK AND THE MEL STICKERS. WHEN I CAME UP TO THE COCKPIT MY HANDS WERE KIND OF OILY SO I TOLD THE PLT HERE'S THE LOG AND WOULD YOU DO ME THE FAVOR OF STICKING THIS LITTLE STICKER BY #1 CSD DISCONNECT SWITCH; BY THE WAY; IT IS STILL CONNECTED; SO WHEN YOU'RE OUT THERE ON THE START UP DIAMOND; AFTER START AT IDLE JUST FLIP THIS SWITCH AND YOU'RE SET TO GO. HE; THE CAPT; APPARENTLY FORGOT TO DO THIS; AND THAT'S WHY HE COMMENTED TO LGA MAINT OVER THE VHF; THEN HE WAS TOLD AGAIN WHAT TO DO.