There is a special puller for removing the pulley. You can find it at your local parts store. Most have it as a loaner tool free of charge.
This requires a power steering pulley puller. This puller is designed to remove and install a power steering pulley without damage to the pulley and or pump. Attempting to do this without the puller will result in damaging the pulley or the pump or both.
You need to rent, borrow or purchase a power steering pulley puller. This tool will remove and replace the pulley without damage to the pulley or the pump.
You will need to buy or rent or borrow a power steering pulley puller. Trying to remove and replace the pulley without the correct puller will surely damage the pulley and or the pump.
You will need a power steering pulley puller. It is designed to remove and install the power steering pulley. If you attempt to remove the pulley without it you will probably damage the pulley or the pump or both.
That is not a Allen screw in there. That is part of the pump shaft. If you are looking to remove the pump pulley you will need a power steering pulley puller. This tool will help you remove it and replace it, without the puller you will damage the pulley or the pump or both.
With a power steering pulley puller. Any attempt to remove the pulley without the proper tool will probably damage the pulley or the pump or both. Most auto parts stores will sell you the puller or rent you one.
The power steering pulley requires a special puller to remove and install the pulley. Many auto parts stores will sell or rent you the proper tool. Any attempt to remove the pulley without the special tools will probably damage the pulley and or the pump.
You can't do it without destroying one or the other.
It is not possible to remove the power steering pulley on a 1997 Buick Le Sabre without removing the power steering pump.
If an idler pulley is broken, I would advise not to drive it anywhere. It would effect the power steering, water pump, alternator and coolant fan causing you to get stuck on the road and possibly cost many more $$ in damage.
You will need a special puller to remove and replace the PS pulley. If you attempt to do this without the special tool you will damage the new pump and/or the old pulley. The rest is straight forward.
There is a special puller just for that job. Without it you will probably damage the pump and or pulley trying to take it apart. Some auto parts stores will rent you the puller or you can purchase one.