To be more correct, you have a Power Unit, PU-751/M, NSN: 6115-00-033-1373, TM: 5-6115-631-14&P.
This consist of One MEP-002A- 5kw generator, 60hz. TM 5-6115-584-12, TM 5-6115-584-34, TM 5-6115-584-24P and TM 5-6115-584-12-HR.
One 3/4 ton trailer, M116A1, TM 9-2330-202-14&P