Sierra 3500 4WD V8-6.6L DSL Turbo (2007)
4. Install a long pin bar into the fan hub (1).
5. Use a J 41240-5A to remove the fan hub nut (2) from the hub in a counterclockwise rotation.
6. Remove the fan and the engine cooling fan shroud as an assembly.
7. Remove the fan clutch bolts from the rear of the fan blade.
8. Separate the fan clutch from the fan blade.
Installation Procedure
Caution: Do not use or attempt to repair a damaged cooling fan assembly. Replace damaged fans with new assemblies. An unbalanced cooling
fan could fly apart causing personal injury and property damage.
1. Install the fan clutch onto the fan blade.
