Overview - ATF Pipes, ATF Cooler And ATF Pre-Heater

Fig 1: ATF Pipes, ATF Cooler And ATF Pre-Heater Overview

Courtesy of AUDI OF AMERICA, LLC

1. Bolt
   • 20 Nm
2. ATF Pre-Heater
   • Installed depending on the version
   • Removing and installing. Refer to ATF PREHEATER, REMOVING AND INSTALLING 
   • The Cooling Oil Valve -N471- is installed in front of the ATF pre-heater. Refer to Figure.
3. Bolt
   • 8 Nm
4. ATF Pipes
5. Bolt
   • 8 Nm
   • Insert the pipe all the way by hand before tightening.
6. Bolt
   • 8 Nm
7. Clip
   • Make sure it fits securely.
8. ATF Cooler
   • Removing and installing. Refer to ATF PIPES AND ATF COOLER, REMOVING AND INSTALLING .
9. O-Rings
   • Replace
   • Coat with ATF.
10. Clamping Pins
    • For the ATF pipes.
    • Depending on the date of manufacture with union nut. Refer to Fig 2.
11. Bolts
    • Depending on the date of manufacture.
    • Tightening specification. Refer to Fig 2.
12. ATF Pipes
    • Depending on the date of manufacture with union nut. Refer to Fig 2.
13. Union Nuts
    • Depending on the date of manufacture.
    • Tightening specification. Refer to Fig 2.
14. O-Rings
    • Replace
    • Coat with ATF.
15. Thermostat
16. O-Rings
    • Replace
    • Coat with ATF.
17. O-Rings
    • Replace
    • Coat with ATF.
18. Bolt
    • 8 Nm
19. Bolt
    • 8 Nm
    • Insert the pipe all the way by hand before tightening.
20. Bolt
    • 25 Nm
    • Insert the pipe all the way by hand before tightening.
21. ATF Pipe
22. Bolt
    • 8 Nm
    • Insert the pipe all the way by hand before tightening.
23. O-Ring
    • Replace
    • Coat with ATF.

Fig 2: Identifying Installation Of ATF Pipes to ATF Cooler (Methods I & II)

Courtesy of AUDI OF AMERICA, LLC

I - Mounting with Clamping Joint

-- Replace the O-rings and coat them with ATF.

-- Insert the ATF pipe all the way into the ATF cooler by hand and then tighten it.

-- Tighten the bolts -1- to 10 Nm.

II - Mounting with Threaded Connection

-- Replace the O-rings and coat them with ATF.

-- Insert the ATF pipe all the way into the ATF cooler by hand and then tighten it.

-- Tighten the union nuts -2- to 20 Nm.

Fig 3: Identifying Pronged Ring -1-, Temperature Valve -2-, Upper ATF Pipe -3-, And Longitudinal Member -4-

Courtesy of AUDI OF AMERICA, LLC

-- Check the ATF pipes for damage and replace them if necessary.

-- Install the pronged ring -1- around the upper ATF pipe -3- just behind the thermostat -2-.

-- Slide the pronged ring -1- on the ATF toward the ATF cooler until it reaches the illustrated position.