EXHAUST(H4DO)
EX(H4DO)

EXHAUST(H4DO) > General Description
COMPONENT
1. FRONT EXHAUST PIPE

(A) | Front catalytic converter | (B) | Rear catalytic converter |  |
(1) | Front oxygen (A/F) sensor | (14) | Exhaust cover | (27) | Exhaust cover
(2) | Gasket | (15) | Exhaust cover | (28) | Exhaust cover
(3) | Front exhaust pipe | (16) | Exhaust cover |  |
(4) | Rear oxygen sensor | (17) | Exhaust cover | Tightening torque: N·m (kgf-m, ft-lb)
(5) | Hanger bracket | (18) | Exhaust cover | T1: | 13 (1.3, 9.6)
(6) | Gasket | (19) | Exhaust cover | T2: | 18 (1.8, 13.3)
(7) | Band | (20) | Exhaust cover | T3: | 23 (2.3, 17.0)
(8) | Exhaust cover | (21) | Band | T4: | 30 (3.1, 22.1)
(9) | Exhaust cover | (22) | Exhaust cover | T5: | 35 (3.6, 25.8)
(10) | Bracket | (23) | Exhaust cover | T6: | FUEL INJECTION (FUEL SYSTEMS)(H4DO)>Front Oxygen (A/F) Sensor>INSTALLATION
(11) | Exhaust cover | (24) | Exhaust cover | T7: | FUEL INJECTION (FUEL SYSTEMS)(H4DO)>Rear Oxygen Sensor>INSTALLATION
(12) | Exhaust cover | (25) | Exhaust cover
(13) | Band | (26) | Exhaust cover

2. REAR EXHAUST PIPE AND MUFFLER

(1) | Rear exhaust pipe | (5) | Gasket | Tightening torque: N·m (kgf-m, ft-lb)
(2) | Spring | (6) | Muffler | T1: | 6.2 (0.6, 4.6)
(3) | Cushion rubber | (7) | Muffler cutter (models with muffler cutter) | T2: | 48 (4.9, 35.4)
(4) | Self-locking nut |  |  |  |

3. HEAT SHIELD COVER

(1) | Center exhaust cover | (2) | Rear exhaust cover | Tightening torque: N·m (kgf-m, ft-lb)
|  |  |  | T1: | 10 (1.0, 7.4)
|  |  |  | T2: | 18 (1.8, 13.3)

EXHAUST(H4DO) > General Description
CAUTION

- When performing service operation, refer to “Repair Contents” in “General Description”. REPAIR CONTENTS>Repair Contents

- 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.

- Prevent scattering of grease and oil. If it scatters, wipe it off immediately to prevent it from penetrating the floor or flowing out, to protect the environmental.

- If the grease and oil is spilt over the engine, exhaust pipe or the under cover, completely wipe it off to avoid emission of smoke or causing a fire.

- 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 work.

- Before disconnecting connectors of sensors or units, be sure to disconnect the ground terminal from the battery sensor.

- Always use the jack-up point when the lifting device, shop jacks or rigid racks are used to support the vehicle.

- Before starting works, remove dirt and corrosion around the target area.

- 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.

- For the parts except for the non-reusable parts, replace then with new parts if necessary.

- Be sure to tighten bolts and nuts to the specified torque.

EXHAUST(H4DO) > Front Exhaust Pipe
REMOVAL

Vehicle components are extremely hot immediately after driving. Be wary of receiving burns from heated parts.

1.

Disconnect the ground terminal from battery sensor. REPAIR CONTENTS>NOTE > BATTERY

2.

Remove the crossmember support rear LH. FRONT SUSPENSION>Crossmember Support>REMOVAL

3.

Disconnect the front oxygen (A/F) sensor connector (A), rear oxygen sensor connector (B) and the ground cord (C).

4.

Separate the front exhaust pipe and rear exhaust pipe.

Suspend the rear exhaust pipe with rope etc.

5.

Remove the bolt which holds front exhaust pipe to hanger bracket.

6.

Remove the front exhaust pipe.

The front exhaust pipe is very heavy. Be careful not to drop it when removing.

EXHAUST(H4DO) > Front Exhaust Pipe
INSTALLATION
1.

Set new gasket to the rear exhaust pipe.

2.

Set a new gasket, and temporarily install the front exhaust pipe.

Be sure to install the front exhaust pipe to the cylinder head.

3.

Install the bolts which secure front exhaust pipe to hanger bracket.

Tightening torque:

35 N·m (3.6 kgf-m, 25.8 ft-lb)

4.

Tighten the nuts which hold the front exhaust pipe.

Tightening torque:

30 N·m (3.1 kgf-m, 22.1 ft-lb)

5.

Connect the front exhaust pipe and rear exhaust pipe.

Tightening torque:

18 N·m (1.8 kgf-m, 13.3 ft-lb)

6.

Connect the front oxygen (A/F) sensor connector, rear oxygen sensor connector and the ground cord.

Tightening torque:

7.5 N·m (0.8 kgf-m, 5.5 ft-lb)

7.

Install the crossmember support rear LH. FRONT SUSPENSION>Crossmember Support>INSTALLATION

8.

Connect the ground terminal to battery sensor. REPAIR CONTENTS>NOTE > BATTERY

EXHAUST(H4DO) > Front Exhaust Pipe
DISASSEMBLY
1.

Remove the front oxygen (A/F) sensor and rear oxygen sensor.

Front oxygen (A/F) sensor:

FUEL INJECTION (FUEL SYSTEMS)(H4DO)>Front Oxygen (A/F) Sensor>REMOVAL

Rear oxygen sensor:

FUEL INJECTION (FUEL SYSTEMS)(H4DO)>Rear Oxygen Sensor>REMOVAL

2.

Remove each exhaust cover.

EXHAUST(H4DO) > Front Exhaust Pipe
ASSEMBLY
1.

Install each exhaust cover.

Tightening torque:

13 N·m (1.3 kgf-m, 9.6 ft-lb)

2.

Install the front oxygen (A/F) sensor and rear oxygen sensor.

Front oxygen (A/F) sensor:

FUEL INJECTION (FUEL SYSTEMS)(H4DO)>Front Oxygen (A/F) Sensor>INSTALLATION

Rear oxygen sensor:

FUEL INJECTION (FUEL SYSTEMS)(H4DO)>Rear Oxygen Sensor>INSTALLATION

EXHAUST(H4DO) > Front Exhaust Pipe
INSPECTION
1.

Check that no leaks are found.

2.

Check for deformation, damage, or excessive rusting.

3.

Check for any foreign matter adhered.

4.

Check for clogging.

EXHAUST(H4DO) > Rear Exhaust Pipe
REMOVAL

Vehicle components are extremely hot immediately after driving. Be wary of receiving burns from heated parts.

1.

Separate the front exhaust pipe and rear exhaust pipe.

Be careful not to let the muffler contact the rear bumper.

2.

Disconnect the rear exhaust pipe and muffler.

Be careful not to drop the rear exhaust pipe.

3.

Apply a coat of spray type lubricant to the mating area of cushion rubber.

4.

Remove the rear exhaust pipe.

5.

Remove the center exhaust cover.

Perform this procedure only when required.

EXHAUST(H4DO) > Rear Exhaust Pipe
INSTALLATION
1.

Install the center exhaust cover.

Tightening torque:

18 N·m (1.8 kgf-m, 13.3 ft-lb)

2.

Set new gasket to the rear exhaust pipe. (Front side)

3.

Apply a coat of spray type lubricant to the mating area of cushion rubber.

4.

Install the rear exhaust pipe.

After installation, degrease the cushion rubber.

5.

Set a new gasket, and connect the rear exhaust pipe and muffler.

Be sure to use a new self-locking nut.

Tightening torque:

48 N·m (4.9 kgf-m, 35.4 ft-lb)

6.

Connect the front exhaust pipe and rear exhaust pipe.

Tightening torque:

18 N·m (1.8 kgf-m, 13.3 ft-lb)

EXHAUST(H4DO) > Rear Exhaust Pipe
INSPECTION
1.

Check that no leaks are found.

2.

Check for deformation, damage, or excessive rusting.

3.

Check for any foreign matter adhered.

4.

Check for clogging.

5.

Check the cushion rubber for wear or crack.

EXHAUST(H4DO) > Muffler
REMOVAL

Vehicle components are extremely hot immediately after driving. Be wary of receiving burns from heated parts.

1.

Disconnect the rear exhaust pipe and muffler.

2.

Apply a coat of spray type lubricant to the mating area of cushion rubber.

3.

Remove the muffler.

Be careful not to let the muffler contact the rear bumper.

4.

Remove the rear exhaust cover.

Perform this procedure only when required.

EXHAUST(H4DO) > Muffler
INSTALLATION
1.

Install the rear exhaust cover.

Tightening torque:

10 N·m (1.0 kgf-m, 7.4 ft-lb)

2.

Apply a coat of spray type lubricant to the mating area of cushion rubber.

3.

Install the muffler.

After installation, degrease the cushion rubber.

4.

Set a new gasket, and connect the rear exhaust pipe and muffler.

Be sure to use a new self-locking nut.

Tightening torque:

48 N·m (4.9 kgf-m, 35.4 ft-lb)

EXHAUST(H4DO) > Muffler
INSPECTION
1.

Check that no leaks are found.

2.

Check for deformation, damage, or excessive rusting.

3.

Check for any foreign matter adhered.

4.

Check for clogging.

5.

Check the cushion rubber for wear or crack.