Installation [07/2020 - ]: Procedure

INSTALL EXHAUST MANIFOLD TO HEAD GASKET

Install a new exhaust manifold to head gasket to the cylinder head sub-assembly.

NOTE:

Install it with the paint mark facing the exhaust manifold sub-assembly RH side.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	Paint Mark

INSTALL EXHAUST MANIFOLD SUB-ASSEMBLY RH
1. Fig 1: Exhaust Manifold Sub-Assembly RH Nuts Tightening Sequence
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Temporarily install the exhaust manifold sub-assembly RH to the cylinder head sub-assembly with the 8 nuts.
2. Tighten the 8 nuts in the order shown in the illustration.
  Torque: 21 N.m (214 kgf/cm, 15 ft.lbf)
INSTALL NO. 1 EXHAUST MANIFOLD HEAT INSULATOR
1. Install the No. 1 exhaust manifold heat insulator to the exhaust manifold sub-assembly RH with the 3 bolts.
  Torque: 10 N.m (102 kgf/cm, 7 ft.lbf)
INSTALL ENGINE OIL LEVEL DIPSTICK GUIDE
1. Apply a light coat of engine oil to a new O-ring.
2. Install the O-ring to the engine oil level dipstick guide.
3. Install the engine oil level dipstick guide with the bolt.
  Torque: 10 N.m (102 kgf/cm, 7 ft.lbf)
4. Install the engine oil level dipstick to the engine oil level dipstick guide.

INSTALL EXHAUST MANIFOLD TO HEAD GASKET LH

Install a new exhaust manifold to head gasket LH to the cylinder head sub-assembly.

NOTE:

Install it with the paint mark facing the exhaust manifold sub-assembly LH side.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	Paint Mark

INSTALL EXHAUST MANIFOLD SUB-ASSEMBLY LH
1. Temporarily install the exhaust manifold sub-assembly LH to the cylinder head sub-assembly with the 8 nuts.
  
  Fig 2: Exhaust Manifold Sub-Assembly LH Nuts Tightening Sequence
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Tighten the 8 nuts in the order shown in the illustration.
  Torque: 21 N.m (214 kgf/cm, 15 ft.lbf)
INSTALL NO. 2 EXHAUST MANIFOLD HEAT INSULATOR
1. Install the No. 2 exhaust manifold heat insulator to the exhaust manifold sub-assembly LH with the 3 bolts.
  Torque: 10 N.m (102 kgf/cm, 7 ft.lbf)
INSTALL ENGINE MOUNTING DAMPER
1. Install the engine mounting damper to the front No. 1 engine mount bracket with the bolt.
  Torque: 10 N.m (102 kgf/cm, 7 ft.lbf)

INSTALL AIR FUEL RATIO SENSOR (for Bank 2)

HINT:

Perform "Inspection After Repair" after replacing an air fuel ratio sensor.

Using SST, install the air fuel ratio sensor to the exhaust manifold RH.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	Torque Wrench Fulcrum Length

Specified tightening torque

Torque: 44 N.m (449 kgf/cm, 32 ft.lbf)

NOTE:

If the air fuel ratio sensor has been struck or dropped, replace it.

HINT:

Calculate the torque wrench reading when changing the fulcrum length of the torque wrench.
Refer to PRECAUTION [07/2020 - ]
When using SST (fulcrum length of 30 mm (1.18 in.)) + torque wrench (fulcrum length of 260 mm (10.2 in.)):
37.7 N.m (384 kgf/cm, 28 ft.lbf)

INSTALL AIR FUEL RATIO SENSOR (for Bank 1)

HINT:

Perform "Inspection After Repair" after replacing an air fuel ratio sensor.

Using SST, install the air fuel ratio sensor to the exhaust manifold LH.

*a	Torque Wrench Fulcrum Length

Specified tightening torque

Torque: 44 N.m (449 kgf/cm, 32 ft.lbf)

NOTE:

If the air fuel ratio sensor has been struck or dropped, replace it.

HINT:

Calculate the torque wrench reading when changing the fulcrum length of the torque wrench.
Refer to PRECAUTION [07/2020 - ]
When using SST (fulcrum length of 30 mm (1.18 in.)) + torque wrench (fulcrum length of 260 mm (10.2 in.)):
37.7 N.m (384 kgf/cm, 28 ft.lbf)

INSTALL ENGINE WITH TRANSMISSION ASSEMBLY
Refer to INSTALLATION [07/2020 - 05/2023] , or refer to INSTALLATION [05/2023 - ]
INSPECT FOR EXHAUST GAS LEAK
See step 23