Subaru Legacy 2004 Service Manual page 380

LUBRICATION
C: DISASSEMBLY
Remove the screws which secure oil pump cover
and then disassemble oil pump. Inscribe alignment
marks on the inner and outer rotors so that they can
be replaced in their original positions during reas-
sembly.
CAUTION:
Before disassembling the oil pump, remove the
relief valve.
(B)
(A)
(A) Oil seal
(B) Oil pump case
(C) Inner rotor
(D) Outer rotor
(E) Oil pump cover
(F) Relief valve
(G) Relief valve spring
(H) Plug
(I) Gasket
(E)
(D)
(C)
(I)
(F)
(G)
(H)
LU-00020
LU(H4SO 2.0)-12
Oil Pump
D: ASSEMBLY
1) Install the front oil seal 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 and relief valve spring
and plug.
NOTE:
Use a new gasket.
5) Install the oil pump cover.
Tightening torque:
#
T1: 5.4 N m (0.55 kgf-m, 4.0 ft-lb)
#
T2: 44 N m (4.5 kgf-m, 32.5 ft-lb)
OIL SEAL INSTALLER
ST
LU-00021
T1
T2
LU-00022