A top pully on my 1995 ford ranger seized, I need

What engine are you installing a timing chain or belt on to better help you out with your issue?

What do you mean nothing?

Too Much tension on the belt , wrong belt, wrong pump, or the routing of the belt is not parallel to the other pulley. There is some sideways friction going on that is producing heat which is messing up the bearings and causing the pulley to crack or pump to seize up. When you say pulley just broke, are you talking about just the pulley or the whole pulley and steering pump assembly?

make sure it's not the belt slipping but if it's not you might need a new pully or new bearings.

Find a 1993 thur 1997 ranger with single seat .drill mounting holes center floor thread hole. then install extra belts

These are fun to do for they are easy once you read on.. The tensioner has a square hole on it. The size is 3/8" which a ratchet will fit in perfectly. Have it handy and inserted after you do this next set. On the very top you will see a pully mounted on a bracket by itself. Loosen the center bolt which it will have to be turned clockwise to loosen. This will make it much easier to change your belt for there is no room to change it any other way for the average guy. The ratchet will have full pressure applied by you to remove the belt easily now

Spray some WD-40 on the pully where the belt rests on the pully while the engine is running and the noise will go away, also make sure the belt is tight enough around the pully, if it is loose then tighten it

IT SOUNDS LIKE YOUR WATER PUMP IS SEIZING UP TAKE IT TO A SHOP FOR HAND ON DIAGNOSTIC

Tentioner pully bearings dry.Change the pully.

was this the bolt in center of the tensioner pulley? if so you will need to remove and replace the tensioner assembly, if not which bolt did you break?