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Exhaust System Removal/Installation: Notes

WARNING:
  • A hot engine and exhaust system can cause severe burns. Turn off the engine and wait until they are cool before removing the exhaust system.
CAUTION:
  • If the main silencer or TWC is reused, sand the flange surface and remove sanding residue, accumulated matter, and friction marks before installing the seal ring.
  • If this work is not performed, the seal ring may not be installed correctly. When sanding the flange surface, be careful not to damage the surface.
  • When sanding the flange surface, sanding residue may get into the removed part or pipe resulting in deterioration or damage to the part. When sanding, make sure parts are protected from sanding residue or foreign matter penetration.
  1. Remove the battery cover. (See BATTERY REMOVAL/INSTALLATION .)
  2. Disconnect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION .)
  3. Remove the plug hole plate. (See PLUG HOLE PLATE REMOVAL/INSTALLATION .)
  4. Remove in the order indicated in the table.
  5. Remove the exhaust system insulator. (See EXHAUST SYSTEM INSULATOR REMOVAL/INSTALLATION NOTE .)
  6. Install in the reverse order of removal.
Fig 1: Exhaust System Components With Torque Specification
G13726750Courtesy of MAZDA MOTORS CORP.
PART DESCRIPTION

1 Main silencer
(See FLANGE SURFACE INSTALLATION NOTE .)
2 Seal ring
(See SEAL RING REMOVAL NOTE .)
3 Rear tunnel member
4 Front tunnel member
5 TWC
(See FLANGE SURFACE INSTALLATION NOTE .)
6 HO2S
(See HEATED OXYGEN SENSOR (HO2S) REMOVAL/INSTALLATION .)
7 A/F sensor
(See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION .)
8 Insulator
9 Exhaust manifold insulator
(See EXHAUST MANIFOLD INSULATOR REMOVAL NOTE .)
10 Clip
11 Exhaust manifold bracket fitting bolt
12 Exhaust manifold
(See EXHAUST MANIFOLD REMOVAL NOTE .)
(See EXHAUST MANIFOLD INSTALLATION NOTE .)
13 Exhaust manifold gasket
14 Exhaust manifold bracket