REMOVAL AND INSTALLATION <EXCEPT-4B1 PHEV>



caution Do not reuse the oxygen sensor that has been dropped.
Pre-removal Operation
  • Exhaust Front Pipe and Dash Panel Heat Protector Removal (Refer to ).

Post-installation Operation
  • Exhaust Front Pipe and Dash Panel Heat Protector Installation (Refer to ).





Removal steps
<<A>>
>>C<<
1.
Oxygen sensor


2.
Exhaust manifold cover


3.
Engine hanger

>>B<<
4.
Exhaust manifold bracket

>>A<<
5.
Exhaust manifold nut

>>A<<
6.
Exhaust manifold washer

>>A<<
7.
Exhaust manifold


8.
Exhaust manifold gasket

REMOVAL SERVICE POINT



<<A>> OXYGEN SENSOR REMOVAL


1.Remove the oxygen sensor connector connection and clamp.

2.Use special tool oxygen sensor wrench (MB991953) to remove the oxygen sensor.

INSTALLATION SERVICE POINTS



>>A<< EXHAUST MANIFOLD/EXHAUST MANIFOLD WASHER/EXHAUST MANIFOLD NUT INSTALLATION


1.Install the exhaust manifold and the exhaust manifold washer.
2.Temporarily tighten the exhaust manifold nut.

3.Tighten the exhaust manifold nut with the specified torque in the order of number shown in the figure.
Tightening torque: 49 ± 5 N·m

>>B<< EXHAUST MANIFOLD BRACKET INSTALLATION


1.After temporarily tightening the exhaust manifold bracket with the installation bolts, check the exhaust manifold fastens securely to the cylinder block.
2.Tighten the cylinder block side bolt to the specified tightening torque.
Tightening torque: 41 ± 10 N·m
3.Tighten the exhaust manifold side bolt to the specified tightening torque.
Tightening torque: 56 ± 8 N·m

>>C<< OXYGEN SENSOR INSTALLATION



1.In the same manner as removal, use special tool oxygen sensor wrench (MB991953) to tighten the oxygen sensor to the specified torque.
Tightening torque: 44 ± 5 N·m
2.Install the oxygen sensor connector connection and clamp.