LINK AS 4235400 - 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.
Illustration 1 g03319449
Disconnect fuel lines (1), harness assembly (2). Remove bolts (3) and fuel priming pump (4). Installation Procedure
Install pump assembly (4) in the reverse order of removal.
Tighten bolts (3) to a torque of 9 2 N m (80 18 lb in).