You do not need a special tool to turn the compressor. Use a socket/ ratchet on the center bolt. If you don't have the deep socket, apply power to the clutch and turn it by hand. If you need more leverage, use a rubber band type jar opener/ torque multiplier.

Change/ flush the oil in the compressor immediately before you install it. I used Behr/ Hella PAO 68 oil with premixed dye for R12

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85 300D turbo pristine w 157k when purchased 167,870 July 2025
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked