PIN AS 3739528 - Caterpillar

Removal Procedure
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat products.Dispose of all fluids according to local regulations and mandates.
Turn OFF the fuel supply to the engine.
Do not allow dirt to enter the fuel system. Thoroughly clean the area around a fuel system component that will be disconnected. Fit a suitable cover over disconnected fuel system component.
Illustration 1 g00599571
Disconnect tube assembly (1).
Disconnect tube assembly (5). Disconnect tube assembly (4) that is between fuel transfer pump (3) and the fuel priming pump (if equipped) and/or the fuel filters.
Remove bolts (2) that hold fuel transfer pump (3) to the cover of the oil pump.
Remove fuel transfer pump (3), the O-ring seal, and the drive coupling.