Use a pneumatic or electric impact wrench.
Hi, I have have the very same problem. I have a 1991 Chev 3/4 tonne. The long stud (bolt) keeps turning and turning ...and the pulley has become loose but won't remove...and the stud keeps turning without coming off even though I put a pry bar behind it at the same time as using my rachet! Rodney
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.
by placing a wrench on the tensioner pulley, and turning.
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.
The bolt is normal thread, righty tightly, lefty loosely.Using a cordless Impact gun is the easiest way to remove it without having to hold the pulley from turning. It should be a 15/16 or whichever size is equivalent in metric measurements.
1. Large air impact wrench. 2. Fabricate or buy holding tool to keep pulley from turning while you remove nut.
You have to get a pulley puller of the appropriate size. Without a pulley you have no chance safely to remove it. Be careful do not deform the pulley it's not that hard as you can think.
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.
Looking at the fan from the front you would turn it counter clock wise to remove it. You will probably need to hold the pulley from turning also.
there should be 3 or 4 bolts that hold pulley on, just remove these bolts a pulley should come off. but remove belt first ! if pulley keeps turning while removing bolts. you can hold it stationary with a scredriver or similar.
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.