Master Cylinder Push Rod Question

I have a 1972 Duster Manual Brakes, I just replaced the Master Cylinder and need a picture on how to re-install Push rod parts, the push rod has a rod with a ball on the end a rubber o ring and a smaller spacer made of rubber, do I have to remove push rod from inside the car to put together before the master cylinder is replaced. I may have to reach behind the master cylinder to hold up the push rod to fit inside the cylinder as I slide it on the 4 bolts. Can someone show me a picture of what order the space and rubber go on the rod.
Please help,
Richard