The delivery was made in December and included the rail involved with last week's derailment.
Four injured people were taken to hospitals while local service was restored for evening rush, MTA said.
Upgrades and maintenance is scheduled across 15 subway lines late Friday until early Monday.
Trains will make all local stops between midnight and 6:30 a.m. starting in December.
The A, C and F trains will be shut down between Manhattan and Brooklyn in the future, the MTA said.
The 1, 4, 5, 6, 7, A, C, D, E, F, G, J, N, Q, R, 42nd St. Shuttle and Rockaway Shuttle will be impacted.
The 1, 2, 3, 4, 5, 6, 7, A, C, D, E, F, G, N, Q, R and S lines will all see disruptions.
Rail problems disrupted many New Yorkers' Thursday commute.
The 1, 4, 5, 6, 7, A, C, E, F, G, N, Q, R and Franklin Avenue Shuttle will see changes.
The 2, 5, 6, A, F, G, N, R, and Rockaway Shuttle will be affected.
The disruption came just hours after major Metro North problems left commuters stuck.
Street closures, subway route changes and parking bans are in store for New Year's Eve.
The 6, A, D, F, G, J, M, Q, N, R, Rockaway and Franklin Avenue shuttle will all be affected.
The 4, 5, 6, 7, A, C, D, E, F, G, M, N, Q, R and S lines are all slated to undergo work this weekend.
The 4, 6, 7, A, C, D, F, J, L, M, N, Q, R, S and Staten Island Railway lines will all be affected.
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