Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Service manual — part 89
EX(STI)-4
General Description
EXHAUST
• 5 door model
(1)
Gasket
(11) Rear exhaust pipe
Tightening torque: N·m (kgf-m, ft-lb)
(2)
Front catalytic converter
(12) Chamber
T1: 13 (1.3, 9.6)
(3)
Center exhaust pipe (front)
(13) Cushion rubber
T2: 18 (1.8, 13.3)
(4)
Center exhaust pipe (rear)
(14) Spring
T3: 23 (2.3, 17.0)
(5)
Gasket
(15) Bolt
T4: 30 (3.1, 22.1)
(6)
Center exhaust pipe upper cover
(16) Gasket
T5: 35 (3.6, 25.8)
(7)
Clamp
(17) Self-locking nut
T6: 40 (4.1, 29.5)
(8)
Rear oxygen sensor
(18) Muffler
T7: 42.5 (4.3, 31.3)
(9)
Rear catalytic converter
(19) Hanger bracket (5MT model)
T8: 48 (4.9, 35.4)
(10) Gasket
(20) Hanger bracket (6MT model)
T9: <Ref. to FU(STI)-56, INSTALLA-
TION, Rear Oxygen Sensor.>
<Ref. to FU(w/o STI)-55,
INSTALLATION, Rear Oxygen
Sensor.>
EX-02728
(10)
(15)
(14)
(12)
(13)
(18)
(16)
T8
(11)
(17)
(13)
(13)
A
(9)
T5
T7
T2
(6)
(4)
(8)
(7)
T2
T1
A
T9
(5)
T4
T7
T7
(1)
(2)
(3)
T3
(20)
T6
(19)
EX(STI)-5
General Description
EXHAUST
B: CAUTION
• Prior to starting work, pay special attention to the following:
1. Always wear work clothes, a work cap, and protective shoes. Additionally, wear a helmet, protective
goggles, etc. if necessary.
2. Protect the vehicle using a seat cover, fender cover, etc.
3. Prepare the service tools, clean cloth, containers to catch grease and oil, etc.
• Vehicle components are extremely hot immediately after driving. Be wary of receiving burns from heated
parts.
• When performing a repair, identify the cause of trouble and avoid unnecessary removal, disassembly and
replacement.
• Before disconnecting connectors of sensors or units, be sure to disconnect the ground cable from battery.
• Always use the jack-up point when the shop jacks or rigid racks are used to support the vehicle.
• Remove contamination including dirt and corrosion before removal, installation, disassembly or assembly.
• Keep the removed parts in order and protect them from dust and dirt.
• All removed parts, if to be reused, should be reinstalled in the original positions with attention to the correct
directions, etc.
• Bolts, nuts and washers should be replaced with new parts as required.
• Be sure to tighten the fasteners including bolts and nuts to the specified torque.
• If any grease adheres to the exhaust pipe, wipe it off. Otherwise a fire may happen.
EX(STI)-6
Front Exhaust Pipe
EXHAUST
2. Front Exhaust Pipe
A: REMOVAL
CAUTION:
Vehicle components are extremely hot after
driving. Be wary of receiving burns from heated
parts.
1) Disconnect the ground cable from battery.
2) Lift up the vehicle.
3) Remove the under cover. <Ref. to EI-28, RE-
4) Remove the front oxygen (A/F) sensor. <Ref. to
FU(STI)-54, REMOVAL, Front Oxygen (A/F) Sen-
sor.> <Ref. to FU(w/o STI)-53, REMOVAL, Front
5) Remove the exhaust manifold RH lower cover
and exhaust manifold LH cover.
6) Remove the bolts and nuts which hold joint pipe
onto exhaust manifold RH.
7) While holding the front exhaust pipe with one
hand, remove the nuts which hold the exhaust
manifold to the cylinder head exhaust port and re-
move the front exhaust pipe.
B: INSTALLATION
1) Install the front exhaust pipe.
NOTE:
Use a new gasket.
Tightening torque:
40 N·m (4.1 kgf-m, 29.5 ft-lb)
IN-00203
EX-02253
EX-00018
EX-02254
EX-00005
EX-02254
EX-00005
EX(STI)-7
Front Exhaust Pipe
EXHAUST
2) Install the joint pipe to the exhaust manifold RH.
NOTE:
Use a new gasket.
Tightening torque:
42.5 N·m (4.3 kgf-m, 31.3 ft-lb)
3) Install the exhaust manifold RH lower cover and
exhaust manifold LH cover.
Tightening torque:
19 N·m (1.9 kgf-m, 14.0 ft-lb)
4) Install the front oxygen (A/F) sensor. <Ref. to
FU(STI)-54, INSTALLATION, Front Oxygen (A/F)
Sensor.> <Ref. to FU(w/o STI)-53, INSTALLA-
TION, Front Oxygen (A/F) Sensor.>
5) Install the under cover. <Ref. to EI-28, INSTAL-
6) Lower the vehicle.
7) Connect the battery ground terminal.
C: DISASSEMBLY
1) Remove the exhaust manifold RH upper cover.
2) Remove the exhaust manifold RH and the ex-
haust manifold LH from the front exhaust pipe.
D: ASSEMBLY
1) Install the exhaust manifold RH and the exhaust
manifold LH to the front exhaust pipe.
NOTE:
Use a new gasket.
Tightening torque:
42.5 N·m (4.3 kgf-m, 31.3 ft-lb)
2) Install the exhaust manifold RH upper cover.
Tightening torque:
19 N·m (1.9 kgf-m, 14.0 ft-lb)
E: INSPECTION
1) Check the connections and welds for exhaust
leaks.
2) Make sure there are no holes or rusting.
EX-00018
EX-02253
IN-00203
(A) Front exhaust pipe
(B) Exhaust manifold RH
(C) Exhaust manifold LH
(D) Gasket
(E) Gasket
(A) Front exhaust pipe
(B) Exhaust manifold RH
(C) Exhaust manifold LH
(D) Gasket
(E) Gasket
EX-02729
(D)
(A)
(B)
(C)
(E)
EX-02730
(D)
(A)
(B)
(C)
(E)
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст