Fastener Tightening Specifications

Components

Fastener Size

Air Guide Pipe

Bracket for Charge Air Cooler

Charge Air Pressure Sensor -G31- /Intake Air Temperature Sensor 2 -G299-

Connecting Piece For crankcase ventilation

Coolant Return Pipe ⁽²⁾

-Banjo Bolt

37.5

-Bolt

Coolant Supply Pipe ⁽¹⁾

-Banjo Bolt

37.5

-Bolt

Hose to Air Guide Pipe, Banjo Bolt

15.5

Left Air Guide Pipe

Oil Return Pipe

Oil Supply Pipe ⁽³⁾

-Banjo Bolt

37.5

-Bolt

Right Air Duct Pipe

Securing strip ⁽⁴⁾

Turbocharger Recirculating Valve

Wastegate Bypass Regulator Valve

⁽¹⁾	For bolt tightening clarification, refer to TURBOCHARGER OVERVIEW Part I and see items -2 and 27-

⁽²⁾	For bolt tightening clarification, refer to TURBOCHARGER OVERVIEW Part I and see items -9 and 16-

⁽³⁾	For bolt tightening clarification, refer to TURBOCHARGER OVERVIEW Part I and see items -11, 13 and 15-

⁽⁴⁾

Replace

Air Guide Hose on the Charge Air Cooler - Installed Position and Tightening Specification

The marking -arrows- must be positioned opposite each other.

Fig 1: Identifying Air Guide Hose on the Charge Air Cooler - Installed Position and Tightening Specification
Courtesy of AUDI OF AMERICA, LLC
The locking bolts from the previously installed hose clamp -1 and 2- must be in the shown positions.

-- Tighten hose clamps to 5.5 Nm.

Left Air Guide on the Intake Tube - Installed Position and Tightening Specification

The marking -arrows- must be positioned opposite each other.

Fig 2: Identifying Left Air Guide on the Intake Tube - Installed Position and Tightening Specification
Courtesy of AUDI OF AMERICA, LLC
The locking bolts from the previously installed hose clamp -1 and 2- must be in the shown positions.

-- Tighten hose clamps to 5.5 Nm.

Right Air Guide on the Turbocharger - Installed Position and Tightening Specification

The marking -arrows- must be positioned opposite each other.

Fig 3: Identifying Right Air Guide on the Turbocharger - Installed Position and Tightening Specification
Courtesy of AUDI OF AMERICA, LLC
The locking bolts from the previously installed hose clamp -1 and 2- must be in the shown positions.

-- Tighten hose clamps to 5.5 Nm.

Turbocharger - Tightening Specification and Sequence

Fig 4: Identifying Turbocharger - Tightening Specification and Sequence

Courtesy of AUDI OF AMERICA, LLC

NOTE:

Replace the nuts for the turbocharger.

-- Tighten the bolts in 4 steps in the sequence shown:

Stage

Bolts

Tightening Specifications

-1 through 6-

15 Nm

-1 through 6-

33 Nm

-1 through 6-

33 Nm ⁽¹⁾

-1 through 6-

33 Nm ⁽¹⁾

⁽¹⁾	If kept constant, all of the bolts will remain tightened to 33 Nm after the seal for the turbocharger is installed.