Pre-Tension On Ball Bearing, Optimizing, Left Flange Shaft

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2016 Audi A4, 2015 Audi A4, 2014 Audi A4, 2013 Audi A4, and 2012 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

the pre-tension on the left flange shaft ball bearing must be optimized only on certain vehicles. Refer to the table for a list of the vehicles. Refer to Installing .

This is not necessary on vehicles built later because they have been redesigned.

Procedure

The left flange shaft is removed. Refer to LEFT FLANGE SHAFT, REMOVING AND INSTALLING .

Conditions for Optimizing

Fig 1: Checking For Traces Of Wear

Courtesy of AUDI OF AMERICA, LLC

The bearing bracket does not show any traces of wear or material erosion.
Small indentations near the hole on the bearing bracket -arrows- are permissible.

Bearing bracket with wear pattern "A", refer to LEFT FLANGE SHAFT BALL BEARING PRE-TENSION, CHECKING - "Wear Pattern A" (the bearing bracket does not shown any traces of wear or material erosion).

Fig 2: Bearing Bracket With Wear Pattern "A"
Courtesy of AUDI OF AMERICA, LLC
A shim is inserted into the bearing seat on the transmission to optimize the pre-tension on the ball bearing.

-- Insert a Shim 0B4 409 227 -1- into the bearing seat on the transmission before installing the flange shaft to improve the pre-tension.

Fig 3: Inserting Shim 0B4 409 227 Into Bearing Seat On Transmission

Courtesy of AUDI OF AMERICA, LLC

-- Install the left flange shaft. Refer to Installing .