D4 service ?s

need a little help here guys- on a daily basis what do i need to service - I bought my little D4 to do some clearing on my property over the winter
- had no idea it was so "old" -which is ok because its a cat! I changed the oil -fuel filters- flushed radiator- checked final drives- trans- greased all fittings i could see--- in the floor trans cover there is 3 "cup" like fittings-1 large - 2 small- the large one is in front of the gear shifter-- the two smaller ones are behind the steering clutches kinda under the seat --what are these for & what type oil do i use-- also is there any place to grease the master clutch assy[throw out bearing?] and again let thank all you guys for all the help this is one GREAT BB and group of people Jim😊

The front "large" cup is for the clutch release bearing.....uses transmission oil and should be serviced every 20 hrs.

The two "small" cups are for the steering clutch release bearings....uses same oil as main crankcase and should be serviced every 10 hrs.

These cups should have some wicking material in them to help dispense the lube.

You should invest in some service manuals.