Auxiliary Fuel Pump Module
Risk of injury to eyes and skin from contact with fuel. Wear protective clothing and eye protection. Risk of poisoning from inhaling and swallowing fuel. Pour fuel only into appropriately marked and approved containers. Failure to follow these instructions may result in possible serious or fatal injury.
The fuel system is under constant high pressure even with engine OFF. Until the fuel pressure has been properly released from the system, do not attempt to open the fuel system. Do not smoke or use open flames/sparks when servicing the fuel system. Make sure the area in which the vehicle is being serviced is in a well ventilated area. Failure to comply may result in serious or fatal injury.
- Drain and remove the fuel tank. Refer to TANK, FUEL, REMOVAL .NOTE:
The auxiliary fuel pump module has to be properly located in the fuel tank for the fuel level gauge to work properly.
- Mark the auxiliary fuel pump module orientation (1).NOTE:
Prior to removing the auxiliary fuel pump module, use compressed air to remove any accumulated dirt and debris from around fuel tank opening.
- Position the Fuel Tank Module Wrench (special tool #10189, Wrench, DEF Module Lock Ring) into the notches on the outside edge of the lock-ring.
- Install a 1/2 inch drive breaker bar into the Fuel Tank Module Wrench (special tool #10189, Wrench, DEF Module Lock Ring).
- Rotate the breaker bar counterclockwise and remove the lock-ring.
- Raise the auxiliary fuel pump module and disconnect the internal fuel line.
- Remove the auxiliary fuel pump module from the fuel tank using caution not to bend the float arm.
- Remove and DISCARD the rubber O-ring seal.