Disassembly & Reassembly (GS300, GS430, IS300, LS430, RX300 & SC430)
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2003 Lexus SC 430, 2003 Lexus RX 300, 2003 Lexus LX 470, 2003 Lexus LS 430, and 2003 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.
- Using 2 small screwdrivers, pry off No. 2 fuel suction support. See Figure. Ensure not to damage suction supports. Remove suction support rubber cushion. Disconnect fuel return jet tube from clamp of No. 2 suction support. Pull out fuel pressure regulator from in tank fuel filter and remove fuel pressure regulator and fuel return jet tube assembly. Remove "O" ring from fuel pressure regulator.
- Remove clip and remove fuel pump screen. Using 2 small screwdrivers, pry off No. 1 fuel suction support. Ensure not to damage suction support. Remove No. 2 fuel filter cushion. Disconnect fuel pump connector. See Figure.
- Using a pulling motion, remove fuel filter and fuel pump assembly. See Figure. Remove No. 1 fuel filter cushion. Remove "O" ring from fuel port of fuel suction plate. Using a pulling motion, remove fuel pump from fuel filter.
- To reassemble, reverse disassembly procedure. Apply a light coat of gasoline to NEW "O" rings. Install NEW fuel pump assembly gasket and fuel pump screen retaining clip.