Narrative:

I was working on a B737-700 #1 engine and performing a routine task card. I was helping with blades and going between idg and putting blades on blade stand. I drained all of the oil and removed the filters from the idg. Because another aircraft had to go in front of aircraft; we had to reposition our aircraft so the other could get into the hangar. We pulled the aircraft back into position and continued the other routine work. We finished the blades and finished servicing the idg. Again; another airplane needed to go in front; so we repositioned our aircraft so the first aircraft could come out of the hangar and a third aircraft could come in. We closed up the aircraft and pushed out to do the leak check; engine run and vibration survey. I was in the right seat on engine run and the idg low oil pressure light did extinguish on start up. At this point I had no indication that anything was wrong until the following night. The manager communicated to me that aircraft had a gate return for an idg low pressure light. Upon returning to gate; maintenance was called. The manager told me that maintenance at the gate put in 'approximately' 3 to 4 quarts of oil in the idg. He also told me that they put the generator (idg) online and it had no problems. Maintenance did a MEL on the idg and they dispatched the aircraft.

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Original NASA ASRS Text

Title: After draining all of the IDG oil; replacing the filters and servicing the oil level; a Base Mechanic reported the same B737-700 returned to the gate for a #1 engine IDG low pressure light.

Narrative: I was working on a B737-700 #1 engine and performing a routine task card. I was helping with blades and going between IDG and putting blades on blade stand. I drained all of the oil and removed the filters from the IDG. Because another aircraft had to go in front of aircraft; we had to reposition our aircraft so the other could get into the hangar. We pulled the aircraft back into position and continued the other routine work. We finished the blades and finished servicing the IDG. Again; another airplane needed to go in front; so we repositioned our aircraft so the first aircraft could come out of the hangar and a third aircraft could come in. We closed up the aircraft and pushed out to do the leak check; engine run and vibration survey. I was in the right seat on engine run and the IDG low oil pressure light did extinguish on start up. At this point I had no indication that anything was wrong until the following night. The Manager communicated to me that aircraft had a gate return for an IDG low pressure light. Upon returning to gate; Maintenance was called. The Manager told me that Maintenance at the gate put in 'approximately' 3 to 4 quarts of oil in the IDG. He also told me that they put the generator (IDG) online and it had no problems. Maintenance did a MEL on the IDG and they dispatched the aircraft.

Data retrieved from NASA's ASRS site as of April 2012 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.