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EXHAUST
EX(SOHC)
Page
EXHAUST
1. General Description
A: COMPONENT
1. 1600CC
GENERAL DESCRIPTION
(16)
(15)
(13)
T4
(9)
T2
T6
(14)
(16)
(11)
(10)
(8)
(7)
(3)
T2
(6)
(1)
(2)
(3)
T1
(4)
T2
(5)
T4
(22)
(26)
(12)
(16)
T1
(27)
T5
(17)
(18)
T2
(23)
(25)
(24)
(28)
T2
T3
(30)
T5
(19)
(29)
(21)
(20)
T4
EN0349
EX(SOHC)-2
GENERAL DESCRIPTION
EXHAUST
(1) Upper front exhaust pipe cover
CTR
(14) Self-locking nut
(15) Muffler
(2) Lower front exhaust pipe cover
CTR
(16) Cushion rubber
(17) Lower clamp
(3) Clamp (18) Upper center exhaust pipe cover
(4) Upper front exhaust pipe cover LH (19) Lower center exhaust pipe cover
(5) Lower front exhaust pipe cover LH (20) Protector
(6) Front exhaust pipe (21) Gasket
(7) Lower front exhaust pipe cover RH (22) Front oxygen (A/F) sensor
(8) Upper front exhaust pipe cover RH (23) Front catalytic converter
(9)
(10)
(11)
Gasket
Spring
Chamber
(24) Center exhaust pipe
(25) Lower front catalytic converter cover
(12) Rear exhaust pipe
(13) Gasket
(26) Upper front catalytic converter cover
(27)
(28)
Rear oxygen sensor
Upper rear catalytic converter cover
(29)
Lower rear catalytic converter cover
(30) Rear catalytic converter
Tightening torque: N·m (kgf-m, ft-lb)
T1: 8 (0.8, 5.8)
T2: 13 (1.3, 9.4)
T3: 18 (1.8, 13.0)
T4: 30 (3.1, 22.4)
T5: 35 (3.6, 26.0)
T6: 48 (4.9, 35.4)
EX(SOHC)-3
GENERAL DESCRIPTION
EXHAUST
2. 2000CC
(16)
(15)
(13)
T4
(9)
T2
T2
T6
(14)
(16)
(11)
(10)
(17)
(16)
(12)
(8)
(3)
T2
(7)
(6)
(1)
(2)
(3)
T1
(4)
T2
(5)
T4
(23)
(27)
T1
(28)
T5
(18)
(19)
T2
(24)
(26)
(25)
(29)
T2
T3
(31)
T5
(20)
(30)
(22)
(21)
T4
EN0350
EX(SOHC)-4
GENERAL DESCRIPTION
EXHAUST
(1) Upper front exhaust pipe cover
CTR
(15) Muffler
(16) Cushion rubber
(2) Lower front exhaust pipe cover
CTR
(17) Rear exhaust pipe
(18) Lower clamp
(3) Clamp (19) Upper center exhaust pipe cover
(4) Upper front exhaust pipe cover LH (20) Lower center exhaust pipe cover
(5) Lower front exhaust pipe cover LH (21) Protector
(6) Front exhaust pipe (22) Gasket
(7) Lower front exhaust pipe cover RH (23) Front oxygen (A/F) sensor
(8) Upper front exhaust pipe cover RH (24) Front catalytic converter
(9)
(10)
(11)
Gasket
Spring
Chamber
(25) Center exhaust pipe
(26) Lower front catalytic converter cover
(12) Rear exhaust pipe cover
(13) Gasket
(14) Self-locking nut
(27) Upper front catalytic converter cover
(28) Rear oxygen sensor
(29)
Upper rear catalytic converter cover
(30) Lower rear catalytic converter cover
(31) Rear catalytic converter
Tightening torque: N·m (kgf-m, ft-lb)
T1: 8 (0.8, 5.8)
T2: 13 (1.3, 9.4)
T3: 18 (1.8, 13.0)
T4: 30 (3.1, 22.4)
T5: 35 (3.6, 26.0)
T6: 48 (4.9, 35.4)
EX(SOHC)-5
GENERAL DESCRIPTION
EXHAUST
B: CAUTION
• Wear working clothing, including a cap, protective goggles, and protective shoes during operation.
• Remove contamination including dirt and corrosion before removal, installation or disassembly.
• Keep the disassembled parts in order and protect them from dust or dirt.
• Before removal, installation or disassembly, be sure to clarify the failure. Avoid unnecessary removal, installation, disassembly, and replacement.
• Be careful not to burn your hands, because each part on the vehicle is hot after running.
• Be sure to tighten fasteners including bolts and nuts to the specified torque.
• Place shop jacks or safety stands at the specified points.
• Before disconnecting electrical connectors of sensors or units, be sure to disconnect negative terminal from battery.
EX(SOHC)-6
2. Front Exhaust Pipe
A: REMOVAL
1) Disconnect battery ground cable.
FRONT EXHAUST PIPE
EXHAUST
4) Lift-up the vehicle.
5) Separate front and center exhaust pipe assembly from rear exhaust pipe.
WARNING:
Be careful, exhaust pipe is hot.
G6M0095
2) Disconnect front oxygen (A/F) sensor connector.
B2M3109
6) Remove under cover.
7) Remove bolts which hold front exhaust pipe onto cylinder heads.
CAUTION:
Be careful not to pull down front and center exhaust pipe assembly.
B2M4243
3) Disconnect rear oxygen sensor connector.
B2M3200
8) Remove bolt which installs front and center exhaust pipe assembly to hanger bracket.
B2M4244
B2M3111
9) Remove front and center exhaust pipe assembly from the vehicle.
CAUTION:
• Be careful not to let front and center exhaust pipe assembly fall off when removing as it is quite heavy.
• After removing front and center exhaust assembly, do not apply excessive pulling force on rear exhaust pipe.
EX(SOHC)-7
FRONT EXHAUST PIPE
EXHAUST
10) Separate front exhaust pipe from center exhaust pipe.
B: INSTALLATION
1) Install front exhaust pipe to center exhaust pipe.
CAUTION:
Replace gaskets with new ones.
Tightening torque:
30 N·m (3.1 kgf-m, 22.4 ft-lb)
S2M0923
S2M0923
2) Install front and center exhaust pipe assembly to the vehicle.
3) Temporarily tighten bolt which installs front and center exhaust pipe assembly to hanger bracket.
B2M3111
4) Tighten bolts which hold front exhaust pipe onto cylinder heads.
Tightening torque:
30 N·m (3.1 kgf-m, 22.4 ft-lb)
5) Install under cover.
B2M3200
EX(SOHC)-8
FRONT EXHAUST PIPE
EXHAUST
10) Connect front oxygen (A/F) sensor connector.
6) Tighten bolts which install front and center exhaust pipe assembly to rear exhaust pipe.
Tightening torque:
18 N·m (1.8 kgf-m, 13.0 ft-lb)
B2M3109
7) Tighten bolt which holds front and center exhaust pipe assembly to hanger bracket.
Tightening torque:
35 N·m (3.6 kgf-m, 26.0 ft-lb)
11) Connect battery ground cable.
B2M4243
G6M0095
C: INSPECTION
1) Make sure there are no exhaust leaks from connections and welds.
2) Make sure there are no holes or rusting.
B2M3111
8) Lower the vehicle.
9) Connect rear oxygen sensor connector.
B2M4244
EX(SOHC)-9
CENTER EXHAUST PIPE
EXHAUST
3. Center Exhaust Pipe
A: REMOVAL
After removing the center and front exhaust pipes as one unit, separate them. Refer to the procedure
for removing the front exhaust pipe. <Ref. to
EX(SOHC)-7, REMOVAL, Front Exhaust Pipe.>
B: INSTALLATION
Install the center exhaust pipe and front exhaust pipe as one unit. Refer to the procedure for install-
ing the front exhaust pipe. <Ref. to EX(SOHC)-8,
INSTALLATION, Front Exhaust Pipe.>
C: INSPECTION
1) Make sure there are no exhaust leaks from connections and welds.
2) Make sure there are no holes or rusting.
EX(SOHC)-10
4. Rear Exhaust Pipe
REAR EXHAUST PIPE
EXHAUST
2) Install rear exhaust pipe to center exhaust pipe.
Tightening torque:
18 N·m (1.8 kgf-m, 13.0 ft-lb)
A: REMOVAL
1) Separate rear exhaust pipe from center exhaust pipe.
CAUTION:
Be careful, exhaust pipe is hot.
B2M3109
2) Separate rear exhaust pipe from muffler.
CAUTION:
Be careful not to pull down rear exhaust pipe.
B2M3109
C: INSPECTION
1) Make sure there are no exhaust leaks from connections and welds.
2) Make sure there are no holes or rusting.
3) Make sure the cushion rubber is not worn or cracked.
3) Remove rear exhaust pipe.
B: INSTALLATION
CAUTION:
Replace gaskets with new ones.
1) Install rear exhaust pipe to muffler.
Tightening torque:
48 N·m (4.9 kgf-m, 35.4 ft-lb)
G2M0382
G2M0382
EX(SOHC)-11
EXHAUST
5. Muffler
A: REMOVAL
1) Separate muffler from rear exhaust pipe.
CAUTION:
Be careful, exhaust pipe is hot.
MUFFLER
B: INSTALLATION
1) Install in the reverse order of removal.
CAUTION:
Replace gasket with a new one.
Tightening torque:
48 N·m (4.9 kgf-m, 35.4 ft-lb)
G2M0382
2) Apply a coat of SUBARU CRC to mating area of rubber cushions in advance.
SUBARU CRC (Part No. 004301003)
G2M0382
C: INSPECTION
1) Make sure there are no exhaust leaks from connections and welds.
2) Make sure there are no holes or rusting.
3) Make sure the cushion rubber is not worn or cracked.
G2M0385
3) Remove front, left and right rubber cushion, and detach muffler assembly.
EX(SOHC)-12
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