F 450 4WD Super Duty V10-6.8L VIN Z CNG (2003)
2. Use the special tool to install the crankshaft pulley.
3. Tighten the crankshaft pulley bolt in four stages.
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Stage 1: Tighten to 90 Nm (66 ft. lbs.).
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Stage 2: Loosen 360 degrees.
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Stage 3: Tighten to 50 Nm (37 ft. lbs.).
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Stage 4: Tighten an additional 90 degrees.
4. Lower the vehicle.
5. Install the drive belt.
6. Install the engine cooling fan and the fan shroud.
