ATF System Overview

NOTE: Coat O-rings and seals with ATF. Other types of lubrication lead to faults in the transmission hydraulics.

Fig 1: Exploded View Of (ATF) System Assembly

Courtesy of AUDI OF AMERICA, LLC

ATF pan
- Removing and installing, refer to OIL PAN, REMOVING AND INSTALLING
Seal
- Replace
ATF Filter
- Removing and installing, refer to ATF FILTER, REMOVING AND INSTALLING
O-Ring
- Replace
Bolt
- Tightening specification and sequence for Mechatronic without a hydraulic pulse memory. Refer to Fig 3.
- Tightening specification and sequence for Mechatronic with a hydraulic pulse memory. Refer to Fig 4.
Mechatronic
- Removing and installing, refer to MECHATRONIC, REMOVING AND INSTALLING
O-Ring
- Replace
O-Rings
- Replace together with the ATF pipe -item 12-
Seals
- Replace together with the connector housing -item 10-
Connector housing
- Replace
Bolt
- 5.5 Nm
ATF Pipe
- Replace
Bolt
- 10 Nm
O-Ring
- Replace
- Present depending on the date of manufacture
- For connecting the hydraulic pulse memory
Hydraulic Pulse Memory with Accumulator Solenoid -N485-
- Present depending on the date of manufacture
- Removing and installing, refer to HYDRAULIC PULSE MEMORY WITH Accumulator Solenoid -N485-, REMOVING AND INSTALLING
Bolt
- Present depending on the date of manufacture
- Tightening specification and sequence, refer to Fig 5
Magnets
- Make sure the entire surface contacts the ATF filter
- Clean before installation
Bolt
- Replace
- Tightening specification and sequence, refer to Fig 2
Oil Drain Plug
- For the ATF in the transmission
- Tightening specification, refer to ATF CIRCUIT OVERVIEW => Drain and Sealing Plug .

Fig 2: ATF Oil Pan - Tightening Specification and Sequence

Courtesy of AUDI OF AMERICA, LLC

NOTE:

Replaced the bolts for the ATF pan.

Pay attention to the installation instructions, refer to OIL PAN, REMOVING AND INSTALLING .

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

Step	Bolts	Tightening Specification/Additional Turn
1.	-1 to 12-	Install the new bolts by hand until the bolt heads touch
2.	-1 to 12-	4 Nm
3.	-1 to 12-	Tighten 45° further

Fig 3: Identifying Mechatronic Tightening Sequence

Courtesy of AUDI OF AMERICA, LLC

-- Tighten the bolts to 10 Nm in the following sequence: -1 to 19-.

NOTE: If the transmission has a pulse memory, then the bolt -17- is installed at the same time the pulse memory is installed, refer to Fig 4.

Fig 4: Tightening Specification And Sequence For Mechatronic With Hydraulic Pulse Memory

Courtesy of AUDI OF AMERICA, LLC

-- Tighten the bolts to 10 Nm in the following sequence -1 through 17-.

-- Install the hydraulic pulse memory -A-, refer to Installing .

-- Tighten the bolts to 10 Nm in the following sequence: -18 to 21-.

NOTE: The bolts -18, 19 and 20- secure the hydraulic pulse memory.

Fig 5: Hydraulic Pulse Memory Tightening Specification And Sequence

Courtesy of AUDI OF AMERICA, LLC

-- Tighten the bolts to 10 Nm in the following sequence: -1 to 3-.