Series 40E – Section 2.3 Fuel System Pump

Section 2.3
Fuel System Pump

The following steps will remove, inspect and install the fuel system pump.‪

Section 2.3.1
Fuel Pump Removal

Remove the fuel pump as follows: ‪

1. Disconnect the fuel supply line from the fuel filter header to the supply manifold. See Figure "Supply Pump Removal" .
   1. Loosen fitting and remove fuel filter header to supply pump line.
   2. Cap the fuel filter header and supply pump openings.
   

   1. Supply Pump to Fuel Filter Line‪

   2. Supply Pump‪

   Figure 1. Supply Pump Removal

2. Loosen three bolts securing the supply pump to the high pressure pump. Remove the supply pump.
3. If it is necessary to remove the supply manifold, refer to .

Section 2.3.1.1
Supply Pump Tappet Cleaning and Inspection

Inspect the supply pump tappet. Observe for straightness, burrs or cracks. See Figure "Tappet Inspection" .‪

1. Tappet‪

‪

Figure 2. Tappet Inspection

Section 2.3.2
Fuel Pump Installation

If it was necessary to remove the supply manifold. Remove the fuel pump as follows: ‪

1. Install supply pump to high pressure pump housing. Secure with three volts. Torque to specifications. See Figure "Supply Pump Installation" .
   

   1. Supply Pump to Fuel Filter Line‪

   2. Supply Pump‪

   Figure 3. Supply Pump Installation

2. Loosen three bolts securing the supply pump to the high pressure pump. Remove the supply pump.
3. Mount the fuel filter header as follows:
   1. Insert the header at the crankcase mounting pad. Fasten the header using the two mounting bolts and washers. Torque to specifications. Refer to "Additional Information" , Specifications.
   2. Remove the nylon cap above the fuel strainer and observe the check ball. If the check ball is not in this location, priming pump will not work.
4. Install the fuel filter header to the supply pump line as follows:
   1. Remove the protective caps from the fuel supply rail and the fuel filter header port.
   2. Position the line to the supply pump and fuel filter header. Secure with hollow screws and new copper sealing gaskets. Torque to specifications. Refer to "Additional Information" , Specifications.
5. Install the new strainer as follows:
   1. Lubricate the threads of the strainer cover and install a new O-ring.
   2. Install the strainer in the cover and hand-tighten into the fuel filter header. Install the strainer with the open end toward the filter header. See Figure "Fuel Filter Strainer" .
   

   1. Fuel Filter Header‪	3. O-ring‪
   2. Strainer‪	4. Strainer Cover‪

   Figure 4. Fuel Filter Strainer

6. Prime the pump.