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Home >> Subaru >> 2015 >> WRX STI >> Repair and Diagnosis >> Engine Mechanical >> Engine Lubrication System (STI) >> Oil Pump >> Disassembly

Oil Pump: Disassembly

Remove the screw which secures oil pump cover and then disassemble oil pump. Inscribe alignment marks on the inner rotor and outer rotor so that they can be replaced in their original positions during reassembly.

NOTE: Before disassembling the oil pump, remove the relief valve.
Fig 1: Identifying Oil Pump Related Components
G10265613Courtesy of SUBARU OF AMERICA, INC.