Search YouTube or a factory service manual for the removal steps.

The pump and system should self-bleed after the fuel lines are secured and the pressure is restored.

Gear Driven Injection Pump

Disconnect the negative battery terminal
Remove any components that obstruct access to the injection pump
Disconnect all fuel lines and electrical connectors to the injector pump
Remove the injector drive gear cover, if equipped
Lock the injector drive gear in place with the locking pin
Remove the fasteners that secure the injector pump
Remove the old injector pump and clean the mounting area
Install the new injector pump and "time it" with the drive gear
Secure the new injector pump with its fasteners
Reconnect all electrical connectors and fuel lines
Install any other removed components
Reconnect the negative battery terminal and clear any codes
Start the engine and verify the injector timing with the proper tool
Perform a comprehensive test drive to verify the repair