A Line Mechanic reports additional information required by an Engineering Order (EO) to be inscribed onto a new data plate for a EMB-145 nose landing gear (NLG) had not been accomplished.

Narrative

I was called to the line for a nose landing gear (NLG) problem on an Embraer EMB-145 aircraft. There was some confusion on what the NLG needed to comply with an Engineering Order (EO). It was determined that it did not need the ultrasound (UT) thickness test; it only needed to comply with the EO which called for 'full service' of the NLG strut and installing a new data plate. Day shift maintenance started and got up to servicing at the point when pumping fluid into the strut to the proper height; the hydraulic cart failed. Afternoon shift took over from there and servicing was completed. Afternoon shift Mechanic was given the new data plate that was already inscribed. I don't know who filled it out; it was done in the office. I told them to copy from the old data plate; but to make sure the new modification number was inscribed. I thought this was what was tracked to show the status of the gear. Maintenance installed the placard. At this point we were waiting for the cure time [of the data plate glue]. I turned work over to night shift telling them all [work] was done up to [completing] the cure time. [Lack of] attention to the paperwork and not focusing on what I think are the important parts. Suggest reading all of the parts of data we are using; Notes and all. [It was] detected by Maintenance Control when loading the NLG part number. Aircraft was taken out of service and corrected [information added].