Installing the three-way catalytic converter (TWC)

Transferring components 

Transfer 

• the SIPS member with the exhaust system mountings.
• the heated oxygen sensors (HO2S).
  NOTE:

  The front and rear heated oxygen sensors (HO2S) are not interchangeable.

Tighten the heated oxygen sensors (HO2S) to 45Nm  . Use tool 9995543 .

Installing the three-way catalytic converter (TWC) 

Fig 1: Identifying Exhaust System, Mobile Jack And Special Tool Universal Plate 999 5972

Courtesy of VOLVO CARS OF NORTH AMERICA.

Lubricate the studs on the turbocharger (TC). Use paste, P/N: 1161408  . Avoid skin contact with the paste. 

Lift up the exhaust system and connect it to the rear system with a new gasket  and new nuts  . Do not tighten.

Then connect to the turbocharger (TC).

HINT: Use a mobile jack with universal plate  9995972  as a support. 

Fig 2: Identifying Front Exhaust Pipe And Turbocharger

Courtesy of VOLVO CARS OF NORTH AMERICA.

Install 

• new nuts  at the connection to the turbocharger (TC).
• the front SIPS member. Do not tighten yet  .
• the brake pipe in holders on the SIPS member.

Tighten the exhaust pipe at the turbocharger (TC) to 25 Nm  .

• a new screw  for the rear mounting for the heat deflector plate.
• the heated oxygen sensor (HO2S) wiring at the mounting points.

Remove the retaining strap at the front edge of the exhaust pipe (applies to AWD).

Fig 3: Identifying Exhaust Connection, TWC And Splash Guard

Courtesy of VOLVO CARS OF NORTH AMERICA.

Press connector halves together.

Tighten the exhaust pipe where it separates downstream of the three-way catalytic converter (TWC) to 25 Nm  .

Install rear SIPS member. Tighten to 25 Nm  (does not apply to AWD).

Tighten the front SIPS member to 25 Nm  .

Install the splashguard under the engine.

Install the left front wheel according to Installing wheels .

Check 

Test drive the engine and any exhaust leakage.