I also have such a folder for one of my MEP802A generators.
It contains these forms:
DA5823 Equipment identification card
DA2404 Equipment Inspection and Maintenance Work sheet
AWRDS BII/SKO Inventory Report
DD FORM 314 Preventive Maintenance Schedule and Record
DD FORM 314 Preventive Maintenance Schedule and Record
APS-3 Equipment MAM/SOUM/GPM Record
DD1397 Processing and Deprocessing Record for Shipment, Storage, and Issue of Vehicles and Spare engines
This gen set is a good example of equipment that was sent to the APS (Army Prepositioned Stock) program.
DA5823 Equipment identification card. It is the card in the front pocket on the log book.
DA2404 Equipment Inspection and Maintenance Work sheet. It will list ANY and ALL Discrepancy, Fault, Deadline item, on the equipment. It will also have any needed parts, listed by TM, Figure, Item, page#, NSN or Part number, Requisition Info, and when something is fixed/repaired, that will be annotated there with date and Initials of correcting mechanic.
AWRDS BII/SKO Inventory Report. It will have an inventory of the BII, (Basic Initial Items) needed to be issued, to insure that the set is ready to be safely put into operation.
DD FORM 314 Preventive Maintenance Schedule and Record. This is in my mind, the most important form in your Log book, and is only in yours, because it was in the ASP program. Normally it is in the unit dispatch office. It only goes into the log book, when it is transferred to another unit. The DD Form 314 is a record of ALL scheduled and accomplished maintenance for the gen set. That will include,Services to be preformed IAW, (In Accordance With) the LO, (Lubrication Order), the AOAP, (Army Oil Analyses Program) and Break test Program. I am sure I have forgotten, something else.
APS-3 Equipment MAM/SOUM/GPM Record. I have never seen one of these. But assume it shows receipt of the gen set by APS.
DD1397 Processing and Deprocessing Record for Shipment, Storage, and Issue of Vehicles and Spare engines. I assume this shows what was done to Process the gen set before putting it into storage.
All in all, interesting documents. The DD Form 314 is used for almost EVERY piece of equipment in the Army. From gas masks, ration heaters, gen sets, trucks, most trailers, weapons, to things you would never even think of.