Grandfathers self acquired property uncles took posession

My grandfather with this his self earnings had bought some land,and he passed away in december of 2004 without leaving a will, my grandmother is still alive and the property is being enjoyed by my maternal uncles , my question is whether my mother and her sisters have a right to ask for equal share in the land , all of them have been married before 1985 and we belong to the hindu community. My grandmother is not ready to take a legal action against her sons.