PROCEDURE
INSTALL STUD BOLT
Tech Tips
If a stud bolt is deformed or its threads are damaged, replace it.
Using an E8 "TORX" socket wrench, install the 2 stud bolts to the exhaust manifold (TWC: Front Catalyst).
Using an E8 "TORX" socket wrench, install the 2 stud bolts to the exhaust manifold assembly LH (TWC: Front Catalyst).
INSTALL EXHAUST MANIFOLD TO HEAD GASKET (for Bank 2)
Install a new exhaust manifold to head gasket (for Bank 2) to the cylinder head sub-assembly.
INSTALL EXHAUST MANIFOLD ASSEMBLY LH (TWC: Front Catalyst)
Temporarily install the exhaust manifold assembly LH (TWC: Front Catalyst) with the 4 nuts.
Temporarily install the No. 2 manifold stay to the exhaust manifold assembly LH (TWC: Front Catalyst) and cylinder block sub-assembly with the bolt and nut.
Using a 12 mm deep socket wrench, tighten the 4 nuts in the order shown in the illustration.
Bolt | |
Nut |
Tighten the bolt and nut in the order shown in the illustration.
INSTALL NO. 2 EXHAUST MANIFOLD HEAT INSULATOR
Install the No. 2 exhaust manifold heat insulator to the exhaust manifold assembly LH (TWC: Front Catalyst) with the 3 bolts in the order shown in the illustration.
INSTALL AIR FUEL RATIO SENSOR (for Bank 2)
INSTALL V-BANK COVER SUB-ASSEMBLY
INSTALL FRONT EXHAUST PIPE ASSEMBLY
INSTALL NO. 1 EXHAUST PIPE SUPPORT BRACKET (for Lower Side)
INSTALL AIR FUEL RATIO SENSOR (for Bank 1)
INSTALL EXHAUST MANIFOLD TO HEAD GASKET (for Bank 1)
Install a new exhaust manifold to head gasket (for Bank 1) to the cylinder head sub-assembly RH.
INSTALL EXHAUST MANIFOLD (TWC: Front Catalyst)
Temporarily install the exhaust manifold (TWC: Front Catalyst) with the 4 nuts.
Temporarily install the manifold stay to the exhaust manifold (TWC: Front Catalyst) and rear engine mounting bracket with the bolt and nut.
Using a 12 mm deep socket wrench, tighten the 4 nuts in the order shown in the illustration.
Bolt | |
Nut |
Tighten the bolt and nut in the order shown in the illustration.
Engage the 3 wire harness clamps.
Connect the air fuel ratio sensor connector.
INSTALL FRONT NO. 3 EXHAUST PIPE SUB-ASSEMBLY
Using a vernier caliper, measure the free length of the 2 compression springs.
Standard Length | 43.0 mm (1.69 in.) |
Minimum Free Length | 41.5 mm (1.63 in.) |
If the free length is less than minimum, replace the compression spring.
Temporarily install a new gasket to the front No. 3 exhaust pipe sub-assembly (center exhaust pipe assembly (TWC: Rear Catalyst) side).
*1 | Front No. 3 Exhaust Pipe Sub-assembly |
*2 | Gasket |
*a | Wooden Block |
Using a plastic hammer and wooden block, tap in the gasket until its surface is flush with the front No. 3 exhaust pipe sub-assembly.
Note
Be careful with the installation direction of the gasket.
Do not reuse the gasket.
Do not damage the gasket.
Do not push in the gasket by using the exhaust pipes when connecting them.
Install 2 new gaskets to the front No. 3 exhaust pipe sub-assembly.
Temporarily install the front No. 3 exhaust pipe sub-assembly with the 4 bolts, 2 nuts and 2 compression springs.
Tighten the 2 bolts and 2 nuts.
Tighten the 2 bolts and 2 compression springs.
Tech Tips
After installation, check that the space between the flanges of the center exhaust pipe assembly (TWC: Rear Catalyst) and front No. 3 exhaust pipe sub-assembly is consistent front-to-rear and left-to-right.
*1 | Center Exhaust Pipe Assembly (TWC: Rear Catalyst) |
*2 | Front No. 3 Exhaust Pipe Sub-assembly |
*3 | Gasket |
*a | Space between Flanges: 8.5 mm (0.335 in.) |
Connect the heated oxygen sensor (for Bank 1) connector.
Engage the 3 wire harness clamps.
INSPECT FOR EXHAUST GAS LEAK
INSTALL FRONT FLOOR COVER LH
Bolt | |
Screw |
Install the front floor cover LH with the 2 clips (B).
Install the clip (A), 2 screws and 4 bolts to the front floor cover LH.
INSTALL NO. 2 ENGINE UNDER COVER
INSTALL NO. 1 ENGINE UNDER COVER