Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. 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-

MENT, Engine Coolant.>

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,

Secondary Air Pump.>

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-

MOVAL, V-belt.>

13) Remove the crank pulley. <Ref. to ME(STI)-47,

REMOVAL, Crank Pulley.> <Ref. to ME(w/o STI)-

45, REMOVAL, Crank Pulley.>

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

Cover.>

15) Remove the timing belt. <Ref. to ME(STI)-50,

REMOVAL, Timing Belt.> <Ref. to ME(w/o STI)-48,

REMOVAL, Timing Belt.>

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,

Timing Belt.>

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-

er.>

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,

INSTALLATION, V-belt.>

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

Fan Motor.>

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