Set the dowel pin on the back of the field coil (2) with the hole in the compressor's front and then mount the field coil on top of the compressor, making sure the lead is not trapped. A new snap ring should be installed to keep the compressor clutch field coil attached to the A/C compressor and the bevel should face outward with the eyelets placed either right or left of the dowel pin position. Use Snap Ring Pliers 9764 or similar (1) to install the snap ring (4), so the field coil stays secure and is pushed all the way down. During installation, make sure you do not harm the friction surfaces and, whenever necessary, gently rap the pulley with the wooden tap (2). A new snap ring is required to hold the pulley and bearing in place and the bevel needs to be facing upward. Once more, you should use Snap Ring Pliers 9764 or any similar tool (1) to install the snap ring (2) that holds the assembly to the A/C compressor. If you keep the old clutch plate and its assembly, fit the previous shims back on the compressor shaft; if you changed the parts, use a pile of 2.54 mm (0.010 in.) thin shims in their place. Attach the clutch plate to the A/C compressor in front and tighten the bolt on the compressor shaft to 19 Nm (168 in. lbs.). After you have tightened, check the air gap in several spots to make sure it is within 0.35 - 0.60 mm (0.014 - 0.024 in.), changing the number of shims as needed. Run the lead from the compressor clutch field coil wire behind bracket (2), then install the electrical connector (1). Attach the compressor to the engine, bolt it into place, link the engine wire harness to the clutch field coil, belt the compressor to the engine's drive and reconnect the negative cable to the battery.