I drove my van up on ramps to allow an extra bit of clearance from underneath. I had plenty of clearance with my 32" 1/2 drive torque wrench. It's actually easier to get the +90deg from underneath. You can use one of the wheels for leverage with your foot. I used a framing square, marked the 90deg on the pulley and made the turn in one clean pull. start the 90deg mark as high on the pulley as you can get your ratchet to go as a starting point.I removed the fan so I could take advantage off the 3 foot long 3/4" torque wrench. I needed the working room from the top. Using a torque wrench that long from the bottom was very awkward and limited.