W 3500 L4-5.2L DSL Turbo (2006)
3. Remove the fuel feed hose.
4. Disconnect the connector of fuel temperature sensor and the fuel rail pressure regulator from the fuel supply pump.
5. Remove the fuel supply pump attachment bolts and nuts, then remove the fuel supply pump.
NOTE: One of the attachment bolt (1) secures the fuel supply pump to the flywheel housing as denoted in the picture below.
6. Use a gear puller to remove the fuel supply pump gear and the bracket O-ring.