Microwave Turn Table

Question

I have a GE Microwave, model JE 1860 BH. At times the Turn Table quits turning. If I remove the glass table and then turn the plastic arms with rollers it rests on and push down and turn lightly, ir drops itto the gear mechanism, or whatever is there, it works again, for a while.Is there anything I gan do to get it back the way it was.Thanks, Don