Subaru 2009 IMPREZA, Service Manual

Page: 373 / 3619

LU(H4SO)-12
Oil Pump
LUBRICATION
3) Apply a coat of engine oil to the inside of front oil
seal.
4) Install the oil pump to cylinder block. Be careful
not to damage the front oil seal during installation.
NOTE:
• Make sure the front oil seal lip is not folded.
• Align the flat surface of oil pump’s inner rotor with
crankshaft before installation.
• Use new O-rings.
• Do not forget to assemble O-rings.
5) Apply liquid gasket to the three bolts thread
shown in figure. (when reusing bolts)
Liquid gasket:
THREE BOND 1324 (Part No. 004403042) or
equivalent
Tightening torque:
6.4 N·m (0.7 kgf-m, 4.7 ft-lb)
6) Install the crank sprocket. <Ref. to ME(H4SO)-
56, INSTALLATION, Crank Sprocket.> <Ref. to
ME(H4DOTC)-60, INSTALLATION, Crank Sprock-
et.>
7) Install the water pump. <Ref. to CO(H4SO)-15,
INSTALLATION, Water Pump.> <Ref. to
CO(H4DOTC)-16, INSTALLATION, Water Pump.>
8) Install the crankshaft position sensor. <Ref. to
FU(H4SO)-26, INSTALLATION, Crankshaft Posi-
tion Sensor.> <Ref. to FU(H4DOTC)-32, INSTAL-
LATION, Crankshaft Position Sensor.>
9) Install the radiator. <Ref. to CO(H4SO)-20, IN-
STALLATION, Radiator.> <Ref. to CO(H4DOTC)-
21, INSTALLATION, Radiator.>
10) Connect the ground cable to battery.
C: DISASSEMBLY
Remove the screw which secures 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.
NOTE:
Before disassembling the oil pump, remove the re-
lief valve.
ME-00312
LU-02103
T
(A) Front 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
IN-00203
LU-00020
(E)
(D)
(C)
(B)
(A)
(F)
(G)
(I)
(H)