Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Service manual — part 106
LU(STI)-26
Oil Pipe
LUBRICATION
7) Drain engine coolant. <Ref. to CO(STI)-13,
DRAINING OF ENGINE COOLANT, REPLACE-
MENT, Engine Coolant.> <Ref. to CO(w/o STI)-13,
DRAINING OF ENGINE COOLANT, REPLACE-
8) Remove the intake manifold. <Ref. to FU(STI)-
17, REMOVAL, Intake Manifold.> <Ref. to FU(w/o
STI)-18, REMOVAL, Intake Manifold.>
9) Remove the secondary air pump. (Oil pipe LH
only) <Ref. to EC(STI)-27, REMOVAL, Secondary
Air Pump.> <Ref. to EC(w/o STI)-29, REMOVAL,
10) Remove the blow-by pipe and water pipe as-
sembly. (Oil pipe RH only)
NOTE:
Do not remove the vacuum hose, radiator inlet
hose, and heater outlet hose.
• STI model
• Except for STI model
11) Remove the radiator main fan and radiator sub
fan. <Ref. to CO(STI)-23, REMOVAL, Radiator
Main Fan and Fan Motor.> <Ref. to CO(STI)-25,
REMOVAL, Radiator Sub Fan and Fan Motor.>
<Ref. to CO(w/o STI)-23, REMOVAL, Radiator
Main Fan and Fan Motor.> <Ref. to CO(w/o STI)-
25, REMOVAL, Radiator Sub Fan and Fan Motor.>
12) Remove the V-belts. <Ref. to ME(STI)-40, RE-
MOVAL, V-belt.> <Ref. to ME(w/o STI)-38, RE-
13) Remove the crank pulley. <Ref. to ME(STI)-47,
REMOVAL, Crank Pulley.> <Ref. to ME(w/o STI)-
14) Remove the timing belt cover. <Ref. to
ME(STI)-49, REMOVAL, Timing Belt Cover.>
<Ref. to ME(w/o STI)-47, REMOVAL, Timing Belt
15) Remove the timing belt. <Ref. to ME(STI)-50,
REMOVAL, Timing Belt.> <Ref. to ME(w/o STI)-48,
16) Remove the cam sprocket LH. <Ref. to
ME(STI)-59, REMOVAL, Cam Sprocket.> <Ref. to
ME(w/o STI)-57, REMOVAL, Cam Sprocket.>
(A) Water tank pipe ASSY
(B) Water pipe ASSY
(C) O-ring
(A)
(B)
(C)
(C)
LU-02722
(A) Water tank pipe ASSY
(B) Water pipe ASSY
(C) O-ring
(A)
(B)
(C)
(C)
ME-05055
LU(STI)-27
Oil Pipe
LUBRICATION
17) Remove the timing belt cover No. 2 LH.
18) Remove the oil pipe.
B: INSTALLATION
1) Inspect the union bolt with filter. <Ref. to
LU(STI)-30, INSPECTING UNION BOLT WITH
FILTER, INSPECTION, Oil Pipe.>
2) Install the oil pipe.
NOTE:
• Be careful of the install location of the union bolt;
the location will differ depending on the presence of
filter.
• Use a new gasket.
Tightening torque:
T1: 6.4 N·m (0.7 kgf-m, 4.7 ft-lb)
T2: 29 N·m (3.0 kgf-m, 21.4 ft-lb)
3) Install the timing belt cover No. 2 LH.
Tightening torque:
5 N·m (0.5 kgf-m, 3.7 ft-lb)
(A) Union bolt with filter (with protrusion)
(B) Union bolt without filter (without protrusion)
(C) Oil pipe RH
(D) Oil pipe LH
(E) Gasket
CO-02908
ME-05030
(A)
(B)
(D)
(A)
(B)
(C)
(E)
(E)
(E)
(E)
(E)
(A) Union bolt with filter (with protrusion)
(B) Union bolt without filter (without protrusion)
(C) Oil pipe RH
(D) Oil pipe LH
(E) Gasket
LU-02710
(A)
(B)
(D)
(A)
(B)
(C)
(E)
(E)
(E)
(E)
(E)
T2
T1
T2
T2
T2
CO-02908
LU(STI)-28
Oil Pipe
LUBRICATION
4) Install the cam sprocket LH. <Ref. to ME(STI)-
59, INSTALLATION, Cam Sprocket.> <Ref. to
ME(w/o STI)-57, INSTALLATION, Cam Sprocket.>
5) Install the timing belt. <Ref. to ME(STI)-53, TIM-
ING BELT, INSTALLATION, Timing Belt.> <Ref. to
ME(w/o STI)-51, TIMING BELT, INSTALLATION,
6) Install the timing belt cover. <Ref. to ME(STI)-
49, INSTALLATION, Timing Belt Cover.> <Ref. to
ME(w/o STI)-47, INSTALLATION, Timing Belt Cov-
7) Install the crank pulley. <Ref. to ME(STI)-47, IN-
STALLATION, Crank Pulley.> <Ref. to ME(w/o
STI)-45, INSTALLATION, Crank Pulley.>
8) Install the V-belts. <Ref. to ME(STI)-40, IN-
STALLATION, V-belt.> <Ref. to ME(w/o STI)-38,
9) Install the radiator main fan and the radiator sub
fan. <Ref. to CO(STI)-23, INSTALLATION, Radia-
tor Main Fan and Fan Motor.> <Ref. to CO(STI)-25,
INSTALLATION, Radiator Sub Fan and Fan Mo-
tor.> <Ref. to CO(w/o STI)-23, INSTALLATION,
Radiator Main Fan and Fan Motor.> <Ref. to CO(w/
o STI)-25, INSTALLATION, Radiator Sub Fan and
10) Install the blow-by pipe and water pipe assem-
bly. (Oil pipe RH only)
• STI model
Tightening torque:
6.4 N·m (0.7 kgf-m, 4.7 ft-lb)
• Except for STI model
Tightening torque:
6.5 N·m (0.7 kgf-m, 4.8 ft-lb)
11) Install the secondary air pump. (Oil pipe LH
only) <Ref. to EC(STI)-27, INSTALLATION, Sec-
ondary Air Pump.> <Ref. to EC(w/o STI)-29, IN-
STALLATION, Secondary Air Pump.>
12) Install the intake manifold. <Ref. to FU(STI)-21,
INSTALLATION, Intake Manifold.> <Ref. to FU(w/o
STI)-22, INSTALLATION, Intake Manifold.>
13) Install the turbocharger oil pipe.
Tightening torque:
T1: 6.4 N·m (0.7 kgf-m, 4.7 ft-lb)
T2: 29 N·m (3.0 kgf-m, 21.4 ft-lb)
(A) Water tank pipe ASSY
(B) Water pipe ASSY
(C) O-ring
(A)
(B)
(C)
(C)
LU-02721
(A) Water tank pipe ASSY
(B) Water pipe ASSY
(C) O-ring
(A) Union bolt without filter (without protrusion)
(B) Gasket
(C) Turbocharger oil pipe
(A)
(B)
(C)
(C)
LU-02720
LU-02698
(C)
(A)
(B)
(B)
T1
T2
LU(STI)-29
Oil Pipe
LUBRICATION
14) Install the turbocharger stay.
Tightening torque:
T1: 33 N·m (3.4 kgf-m, 24.3 ft-lb)
T2: 42.5 N·m (4.3 kgf-m, 31.3 ft-lb)
15) Temporarily tighten the bolts and flare nuts
which secure the oil inlet pipe to the turbocharger.
NOTE:
Use a new gasket.
16) Tighten the union bolts and flare nuts which se-
cure the oil inlet pipe to the turbocharger.
CAUTION:
In order to prevent damaging the oil pipe on the
cylinder head side, fix the section (a) shown in
the figure when tightening the oil inlet pipe flare
nut, and avoid the part from rotating together
while tightening the nut.
Tightening torque:
T1: 16 N·m (1.6 kgf-m, 11.8 ft-lb)
T2: 20 N·m (2.0 kgf-m, 14.8 ft-lb)
17) Attach the turbocharger upper cover.
Tightening torque:
7.5 N·m (0.8 kgf-m, 5.5 ft-lb)
18) Install the intercooler. <Ref. to IN(STI)-13, IN-
STALLATION, Intercooler.> <Ref. to IN(w/o STI)-
12, INSTALLATION, Intercooler.>
LU-02713
T1
T2
LU-02692
LU-02719
(a)
T1
T2
LU-02700
LU-02694
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