Subaru 2002 IMPREZA Service Manual page 2453

B: INSTALLATION
1. NON-TURBO MODEL
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 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.
(1) Bush
(2) Nut
(3) 21 mm
(4) 14 mm
(5) Bolt
OIL PUMP
POWER ASSISTED SYSTEM (POWER STEERING)
(2) Tighten the bolt which installs oil pump to
bracket.
Tightening torque:
15.7 (1.6 kgf-m, 11.6 ft-lb)
Tightening torque:
37.3 (3.8 kgf-m, 27.5 ft-lb)
B4M1670B
2) Tighten the bolt which installs power steering
pump bracket.
PS-91
ST0016
ST0019
B2M3151