REMOVAL AND INSTALLATION
<4B1-PHEV>



caution Do not reuse the linear air flow sensor or the oxygen sensor (rear) that has been dropped.




Removal steps

>>D<<
1.
Harness bracket


·
Floor console side cover (Refer to GROUP 52A - Front Floor Console Assembly ).


·
Turn up the passenger’s side floor carpet <LH drive vehicles>


·
Turn up the driver’s side floor carpet <RH drive vehicles>
<<A>>
>>C<<
2
Linear A/F sensor
<<A>>
>>C<<
3.
Oxygen sensor (Rear)


4.
Exhaust manifold cover


5.
Engine hanger

>>B<<
6.
Exhaust manifold bracket

>>A<<
7.
Exhaust manifold nut

>>A<<
8.
Exhaust manifold washer

>>A<<
9.
Exhaust manifold


10.
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<< LINEAR A/F SENSOR AND OXYGEN SENSOR INSTALLATION



1.Secure the sensor wiring harness with a band as shown.

2.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

>>D<< HEARNESS BRACKET INSTALLATION



1.Install the wiring harness bracket so that it is parallel to the counterhold on the bracket. (There is no free play between them.)
2.Tighten the bolt to the specified torque.
Tightening torque: 12 ± 3 N·m