Subaru IMPREZA 2004 Service Manual page 13

LUBRICATION
CAUTION:
Before disassembling the oil pump, remove the
relief valve.
(B)
(A)
(A) Oil seal
(B) Pump case
(C) Inner rotor
(D) Outer rotor
(E) Pump cover
(F) Relief valve
(G) Relief valve spring
(H) Plug
(I) Gasket
(E)
(D)
(C)
(I)
(F)
(G)
(H)
LU-00020
LU(H4DOTC)-12
Oil Pump
D: ASSEMBLY
1) Install the front oil seal by using ST.
ST 499587100
NOTE:
Use a new oil seal.
2) Apply a coat of engine oil to the inner and outer
rotors.
3) Install the inner and outer rotors in their original
positions.
4) Install the oil relief valve, relief valve spring and
plug.
NOTE:
Use a new gasket.
5) Install the oil pump cover.
Tightening torque:
T1: 5 N·m (0.5 kgf-m, 3.6 ft-lb)
T2: 44 N·m (4.5 kgf-m, 32.5 ft-lb)
OIL SEAL INSTALLER
ST
LU-00021
T1
T2
LU-00022