I can't cite the page in the TM but I'm sure I could find it pretty quickly. Anyhow, park truck and disable batteries first. Remove two bolts on the front of the compressor pulley. Rotate outer half of compressor pulley counterclockwise, remove out half, remove belt. Install new belt, tie a string around it. Pull string from the bottom most edge of crank pulley. Start outer side of compressor pulley back onto the threads. Rotate Clockwise. When it contacts the belt, work the belt up into the "groove" as best you can. When you have it somewhat started, reconnect the batteries, bump the engine over with the fuel control pulled out and attempt to rotate the outer pulley half clockwise. I normally repeat this step 5 or 6 times and I use the special wrenches. I once tried to loosen a air compressor pulley using some of the methods previously mentioned in this thread and learned quickly that the outer pulley is made out of cheap brittle "pot metal". I broke a bolt hole ear off and ordered the tools. Got it off on the second go around with the tools.