Oil Pump: Disassembly

WARNING: This page is about a different variant/trim than selected.

To remove the relief valve, proceed as follows:
Remove cotter pin. Drill a 3.175 mm (1/8 inch.) hole into the relief valve retainer cap and insert a self-threading sheet metal screw into cap.
Clamp screw into a vise and while supporting oil pump body, remove cap by tapping oil pump body using a soft hammer. Discard retainer cap and remove spring and relief valve (Fig 1).
Remove oil pump cover screws, and lift off cover.
Remove pump rotors.
Wash all parts in a suitable solvent and inspect carefully for damage or wear (Fig 2).

Fig 1: Identifying Oil Pressure Relief Valve
Courtesy of DAIMLERCHRYSLER CORP.

Fig 2: Exploded View Of Oil Pump
Courtesy of DAIMLERCHRYSLER CORP.