Procedure if there is Bearing Undersize

WARNING: This page is about a different car, the 2015 Audi S7, 2015 Audi RS 7, 2014 Audi S7, 2014 Audi RS 7, and 2013 Audi S7. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Measuring Value

Courtesy of AUDI OF AMERICA, LLC

NOTE:

The bearing undersize can only be determined in the described procedure.

-- Place Straight Edge - 500mm VAS6075 straight across the contact surface on the transmission housing and measure the distance to the bearing on both sides with a feeler gauge.

-- Write down the measured value.

-- Place straight edge 90° offset across the contact surface on the transmission housing and measure the distance to the bearing on both sides with a feeler gauge.

-- Write down the measured value.

Selecting the Shim(s):

NOTE:

Use the largest value take from the four values to select the shim(s).

Enter the measured bearing undersize as negative value ("-") into the calculation.

Specified value, bearing oversize = 0.5 to 0.8 mm

-	Larger determined bearing undersize (example -0.15 mm)
+	Shim(s) thickness, (thickness = 0.3 mm)
=	Bearing pre-load (specified value = 0.5 to 0.8 mm)

Example:

1 shim:

-0.15 mm + 0.3 mm = 0.15 mm, "bearing pre-load is too small"

3 Shims:

-0.15 mm + 0.3 mm + 0.3 mm + 0.3 mm = 0.75 mm, "bearing pre-load is in the specified range"

Result: A 0.75 mm bearing pre-load within the specified value of 0.5 to 0.8 mm is reached by installing three 0.3 mm shims.

Continuation for All

Fig 2: Shims

Courtesy of AUDI OF AMERICA, LLC

-- Replace the bearing bracket, the ball bearing and the circlip, refer to LEFT FLANGE SHAFT BALL BEARING MOUNTING BRACKET, REMOVING AND INSTALLING .

-- Insert the determined number of shims 0B4 409 227 item -1- into the bearing seat on the transmission before installing the flange shaft.

-- Install the left flange shaft, refer to LEFT FLANGE SHAFT, REMOVING AND INSTALLING .