BODY 1792410 - Caterpillar

1. Disconnect fuel lines (2) and (3) from fuel transfer pump (1).2. Remove the bolts, and remove fuel transfer pump (1) from the engine oil pump. Check the condition of the O-ring seal on the fuel transfer pump.Install Fuel Transfer Pump
1. Make a replacement of the O-ring seal on the fuel transfer pump if necessary. Put clean engine oil on the seal and the drive coupling spline. 2. Put fuel transfer pump (1) in position on the engine oil pump. Make sure the drive coupling for the fuel transfer pump is correctly engaged with the engine oil pump shaft.3. Install the bolts that hold the fuel transfer pump.4. Connect fuel lines (2) and (3) to fuel transfer pump (1).5. Use the fuel priming pump to remove (bleed) the air from the fuel system.Disassemble Fuel Transfer Pump
START BY:a. remove fuel transfer pump 1. Pull drive coupling (2) from the pump shaft.2. Remove O-ring seal (1) from the pump. 3. Remove cap (6), seal washer (5), spring (4) and relief valve poppet (3) from the pump bracket assembly. 4. Remove bolts (7), and remove pump head (8) from plate (9). 5. If necessary, remove check valve (10) from head (8). 6. Remove plate (9) from the pump casing.7. Remove gasket (11) and the O-ring seal from the opposite side of plate (9).8. If necessary, remove the bearings from plate (9).8. If the bearings are damaged in plate (9), the plate must be replaced. The bearings are not serviced separately. 9. Remove gear assembly (12) and shaft assembly (13) from the pump bracket and casing (14). 10. Remove casing (14) and sleeves (15) from pump bracket (16).11. Remove the O-ring seal from casing (14). 12. Remove outer seal (17) and inner seal (18) from bracket (16).13. If the bearings are damaged in bracket (16), the bracket must be replaced. The bearings are not serviced separately.Assemble Fuel Transfer Pump
1. Use tool group (A) to install the inner and outer lip-type seals in bracket (1). Make sure the lips of the seals are in the position shown at assembly. Put clean engine oil on the lips of the seals. 2. Inspect bearings (2). If they are damaged, bracket (1) must be replaced as a unit. 3. Install sleeves (4) in bracket (1).4. Install O-ring seal (5) in casing (3), and put casing (3) over sleeves (4) on bracket (1). 5. Install gear assembly (6) and shaft assembly (7) in the bracket and casing. 6. Inspect bearings (8). If they are damaged, plate (9) must be replaced as a unit. 7. Install O-ring seal (10) in plate (9), and put plate (9) in position on the pump casing. 8. Use tool group (A) to install the check valve in head (11) until it makes contact with the shoulder in its bore. Make sure the spring on the check valve is toward the inside before it is installed.
When head (11) is installed, be sure the drain hole (weep hole) is open.
9. Put gasket (12) and