Impreza WRX STI F4-2.5L DOHC Turbo (2007)
8) Remove the bolt from the rear side of oil pump.
9) Disassemble the oil pump and bracket by inserting a flat tip screwdriver as shown in the figure.
INSTALLATION
1) Install the oil pump to bracket.
(1) Place the oil pump bracket in a vise. Tighten the bushing using a 12.7 mm (1/2") type 14 mm and 21 mm box wrench until it is in contact
with the oil pump mounting surface.
CAUTION:
Do not place the oil pump bracket directly in the vise; use soft pads and hold oil pump lightly to protect the pump.
