GEAR (SEM) 5522608 - Caterpillar

Typical Example1. Turn the fuel supply line valve at the fuel tank to the "closed" position.2. Disconnect fuel lines (3) and (4) from fuel transfer pump (2).3. Remove two bolts (1) and fuel transfer pump (2) from the fuel injection pump housing.4. Remove the O-ring seal from the fuel transfer pump. The following steps are for installation of the fuel transfer pump.5. Install the O-ring seal on the fuel transfer pump.6. Put fuel transfer pump (2) in position on the fuel injection pump housing, and install two bolts (1) that hold it in place.7. Connect fuel lines (3) and (4) to the fuel transfer pump.8. Turn the fuel supply line valve, at the fuel tank, to the "open" position.Disassemble Fuel Transfer Pump
Start By:a. remove fuel transfer pump
Cover (1) is under spring force. To prevent possible personal injury, carefully remove bolts (2) and cover (1).
1. Remove bolts (2) and cover (1) from the housing. 2. Remove O-ring seals (3) and (4) from the cover.3. Remove valve assembly (5) from the cover. 4. Remove spring (6) from the housing. 5. Remove piston (12) from sleeve (10). Remove washer (15), valve assembly (14) and seal (13) from piston (12).6. Remove sleeve (10) from housing (7). Remove O-ring seal (11) from the sleeve.7. Remove guide and tappet assembly (9) and seal (8) from housing (7). 8. Remove two screws (16), cover (17) and the seal from housing (7). 9. Remove valve assembly (18) from housing (7).Assemble Fuel Transfer Pump
Be sure all parts of the fuel transfer pump are clean before assembly.
1. Install valve assembly (18) in housing (7) as shown. 2. Put clean diesel fuel on seal (19). Put seal (19) in position on cover (17) as shown. Put cover (17) on housing (7), and install the screws that hold it. 3. Put clean diesel fuel on seal (8). Put seal (8) and guide and tappet assembly (9) in position in housing (7).4. Put clean diesel fuel on O-ring seal (11). Put O-ring seal (11) in position on sleeve (10), and install sleeve (10) in housing (7).5. Install piston (12) in sleeve (10).6. Put clean diesel fuel on seal (13). Put seal (13), valve assembly (14) and washer (15) in position in piston (10). 7. Put clean diesel fuel on O-ring seals (3) and (4). Put the O-ring seals and valve assembly (5) in position in the cover as shown. 8. Put spring (6) and cover (1) in position on housing (7), and install the bolts that hold them.End By:a. install fuel transfer pump