Audi Workshop Service and Repair Manuals

Overview of components

Note:

To adjust the clutch play, install components without shim(s) (Item 37-113

• Reverse gear clutch -K2-
• ◆ Does not need to be installed to determine shim(s)
• ◆ Install for check measurement
• Shim
• ◆ Do not install when adjusting clutch play
• ◆ Up to 3 shims may be installed

• 1st to 3rd gear clutch -K1-
• O-ring
• 3rd and 4th gear clutch -K3- with turbine shaft
• Axial needle bearing with washer
• ◆ Axial needle bearing faces towards small input shaft
• ◆ Washer faces towards -K3-
• Gearbox housing
• ◆ Planetary gearbox installed up to small input shaft => Assembling planetary gearbox, Page 37-113

Determining thickness of shim(s) -C-

Conditions:

• ● Planet carrier has been installed and adjusted
  => Assembling planetary gearbox, Page 37-113
• ● To perform measurement, gearbox housing must be turned on repair stand so that input gear is facing downwards, as shown on .

→ The thickness of the shim(s) depends on the size of gap "x". Gap "x" is calculated using the following formula:

x = a - b

•     1 -    ATF pump
•     2 -    Reverse gear clutch -K2-
•     3 -    1st to 3rd gear clutch -K1-
•     4 -    3rd and 4th gear clutch -K3-

Calculating "a"

• ‒ → Place short straightedge "A" onto pump flange on gearbox housing.
• ‒ Press -K1- down in direction of arrow and measure distance into -K1- with depth gauge "B".

Example for calculating "a":

Calculating "b"

• ‒ Place paper gasket onto ATF Pump.
• ‒ → Place straightedge -B- onto stator support (arrow) and measure with depth gauge -A- to gasket of pump flange.

Example:

Example for calculating "x":

Gap x = a - b

= 54.2 mm - 51.0 mm = 3.2 mm

• ‒ Determine size of shim(s) according to table. Part Numbers

=> Parts catalogue

Table of shims -C-

The shims have various thicknesses:

• ‒ Carry out clutch play check measurement after installing ATF pump.

Check measurement (clutch play)

• ● The clutch play cannot be measured until the ATF pump has been installed.
• ● Reverse gear clutch -K1- must be installed.

• ‒ Attach dial gauge holder to gearbox housing and place dial gauge on turbine shaft with a preload of 1 mm.

Notes:

• ◆ Bring the gearbox into its normal position as installed in the vehicle to enable the turbine shaft to be moved.
• ◆ The turbine shaft should only be moved by hand; using pliers will damage the splines.

• ‒ → Pull turbine shaft out and push it in (shaft will be difficult to move) and read off play on dial gauge.

• ● Play: min. = 0.5 mm; max. = 1.2 mm.