Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Manual — part 104
LU(STI)-18
Oil Pan and Strainer
LUBRICATION
5. Oil Pan and Strainer
A: REMOVAL
1) Disconnect the ground cable from battery.
2) Remove the air intake duct. <Ref. to IN(STI)-10,
REMOVAL, Air Intake Duct.> <Ref. to IN(w/o STI)-
10, REMOVAL, Air Intake Duct.>
3) Remove the air intake boot.
4) Remove the intercooler. <Ref. to IN(STI)-12,
REMOVAL, Intercooler.> <Ref. to IN(w/o STI)-12,
5) Remove the pitching stopper.
6) Remove the radiator upper brackets.
7) Support the engine with a lifting device and wire
ropes.
8) Lift up the vehicle.
CAUTION:
When lifting up the vehicle, raise up wire ropes
at the same time.
9) Remove the under cover. <Ref. to EI-28, RE-
10) Drain the engine oil. <Ref. to LU(STI)-11, RE-
11) Remove the front exhaust pipe. <Ref. to
EX(STI)-6, REMOVAL, Front Exhaust Pipe.>
12) Remove the nuts which secure the engine
mounting to the front crossmember.
13) Remove the bolts which secure oil pan on cyl-
inder block with the engine raised up.
14) Insert an oil pan cutter blade between cylinder
block-to-oil pan clearance and remove the oil pan.
CAUTION:
Do not use a screwdriver or similar tool in place
of oil pan cutter.
15) Remove the oil strainer.
IN-00203
LU-02413
EX-02520
CO-02407
LU-00222
LU-02415
LU(STI)-19
Oil Pan and Strainer
LUBRICATION
16) Remove the baffle plate.
B: INSTALLATION
NOTE:
Before installing the oil pan, clean the mating sur-
face of oil pan and engine block.
1) Make sure that the seals (A) are installed se-
curely on the baffle plate in a direction as shown in
the figure below.
NOTE:
Use a new seal.
2) Install the baffle plate.
Tightening torque:
6.4 N·m (0.7 kgf-m, 4.7 ft-lb)
3) Install the oil strainer to cylinder block.
NOTE:
Use new O-rings.
Tightening torque:
10 N·m (1.0 kgf-m, 7.4 ft-lb)
4) Tighten the oil strainer stay together with the baf-
fle plate.
Tightening torque:
6.4 N·m (0.7 kgf-m, 4.7 ft-lb)
5) Apply liquid gasket to the mating surfaces of oil
pan, and install the oil pan.
NOTE:
• Use a new gasket.
• Install within 5 min. after applying liquid gasket.
Liquid gasket:
THREE BOND 1217G (Part No. K0877Y0100)
or equivalent
(A) Oil pan
(B) Oil strainer
(C) Baffle plate
(D) Cylinder block
(A)
(C)
(D)
(B)
LU-02334
LU-00052
(A)
(A) Gasket
LU-02353
(A)
LU(STI)-20
Oil Pan and Strainer
LUBRICATION
6) Tighten the bolts which install oil pan to cylinder
block.
Tightening torque:
T1: 5 N·m (0.5 kgf-m, 3.7 ft-lb)
T2: 6.4 N·m (0.7 kgf-m, 4.7 ft-lb)
T3: 10 N·m (1.0 kgf-m, 7.4 ft-lb)
7) Lower the engine onto front crossmember.
8) Install the nuts which hold the engine mounting
to the front crossmember.
Tightening torque:
45 N·m (4.6 kgf-m, 33.2 ft-lb)
9) Install the front exhaust pipe. <Ref. to EX(STI)-6,
INSTALLATION, Front Exhaust Pipe.>
10) Install the under cover. <Ref. to EI-28, INSTAL-
11) Lower the vehicle.
CAUTION:
When lowering the vehicle, lower the lift up de-
vice and wire ropes at the same time.
12) Remove the lifting device and wire ropes.
13) Install the pitching stopper.
Tightening torque:
T1: 50 N·m (5.1 kgf-m, 36.9 ft-lb)
T2: 58 N·m (5.9 kgf-m, 42.8 ft-lb)
14) Install the radiator upper brackets.
Tightening torque:
12 N·m (1.2 kgf-m, 8.9 ft-lb)
15) Install the intercooler. <Ref. to IN(STI)-13, IN-
STALLATION, Intercooler.> <Ref. to IN(w/o STI)-
12, INSTALLATION, Intercooler.>
(A) Oil pan
(B) Oil strainer
(C) Baffle plate
(D) Cylinder block
T2
T2
T3
T1
(A)
(C)
(D)
(B)
T1
LU-02335
LU-02415
LU-00222
MT-01301
T1
T2
CO-02407
LU(STI)-21
Oil Pan and Strainer
LUBRICATION
16) Install the air intake boot.
Tightening torque:
2.5 N·m (0.3 kgf-m, 1.8 ft-lb)
17) Install the air intake duct. <Ref. to IN(STI)-10,
INSTALLATION, Air Intake Duct.> <Ref. to IN(w/o
STI)-10, INSTALLATION, Air Intake Duct.>
18) Connect the battery ground terminal.
19) Refill the engine oil. <Ref. to LU(STI)-11, IN-
C: INSPECTION
Check that the oil pan, oil strainer and baffle plate
do not have deformation, cracks or damage.
LU-02413
IN-00203
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