MECHATRONIC, Removing And Installing: Installing

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Fig 1: Identifying Mechatronic Pipes & O-rings

Courtesy of AUDI OF AMERICA, LLC

NOTE:

The ATF pressure pipes -1 through 5- are made out of plastic on the newer version of the transmission.

The bracket for the ATF pressure pipes -1 and 2- is not present in this case.

The metal ATF pressure pipes can be replaced with plastic ATF pressure pipes. To do so, remove the bolt -arrow- and remove the bracket.

Coat the seals with ATF before installing.

-- If equipped, remove the bolt for the ATF pressure pipe bracket -arrow-.

-- Replace the ATF pressure pipes (clutch pressure) -1 and 2-.

-- Replace the ATF pipes -3 through 5-.

-- If equipped, tighten the bolt without the ATF pressure pipe bracket -arrow-.

Tightening specifications. Refer to OVERVIEW - MECHATRONIC .

NOTE:

Make sure all shift forks and gear positions are in the center position before installing the DSG transmission Mechatronic -J743-.

Fig 2: Identifying Shift Forks

Courtesy of AUDI OF AMERICA, LLC

Adjust the Shift Forks

-- First check the shift positions for the shift forks -1 through 4- by hand.

Each shift fork has three positions:

-G- is engaged
Idle -N- (center position)
-G- is engaged

-- Move all four shift forks one time into each position -arrows- one after the other.

-- After doing this, move the shift forks back into the center position -N-.

Adjust the Gear Selector:

Fig 3: Locating Mechatronic Identification

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CAUTION:

There is a risk of destroying the transmission control module (Mechatronic) with static discharge.

Always "discharge" the static electricity before working with electric connectors. Do this by touching a grounded object, for example vehicle ground, the vehicle or the hoist.
Do not touch contacts in transmission connector with hands.
Do not pry out the plunger on the sensors.

The gear shifter must be adjusted differently depending on the date of manufacture of the Mechatronic.

The date of manufacture is located only on the Mechatronic identification -arrow-.

The Mechatronic identification consists of:

Mechatronic identification				Example "L31B1138"
L	31	B1	138	Example "L31B1138"
L				Year of manufacture: L = 2010 K = 2009 J = 2008... etc.
	31			Calendar week in the year of manufacture
		B1		Manufacturer day shift identification: Monday: Shift 1 = A1, Shift 2 = B1, Shift 3 = C1 Tuesday: Shift 1 = D1, Shift 2 = E1, Shift 3 = F1 Wednesday: Shift 1 = G1, Shift 2 = H1, Shift 3 = I1... etc.
			138	Running manufacturing number of the shift per day, here, the 138 Mechatronic from shift B1

The gear positions must be adjusted to a different adjustment value from Mechatronic "L31B1138".

NOTE:

A Mechatronic with the identification. "L31A1140" was built before Mechatronic "L31B1138" because it was built by the 1st shift (A1) on a Monday.

A Mechatronic with the identification "L31C1009" was built after Mechatronic "L31B1138" because it was built by the 3rd shift (C1) on Monday.

-- Move the gear position back and forth and set the 4 gear positions on the back of the Mechatronic in the center position to dimension -a-.

Fig 4: Identifying Mechatronic Center Position Dimensions

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For Mechatronic with Identification Through "L31B1137" :

Dimension -a- = 28 mm

For Mechatronic with Identification From "L31B1137" :

Dimension -a- = 32 mm.

-- Align the gear selector yokes -arrows- so that they engage into the eyes in the shift fork when being installed.

Fig 5: Aligning Gear Selector Yokes

Courtesy of AUDI OF AMERICA, LLC

-- Insert the Mechatronic into the transmission housing.

Fig 6: Identifying Mechatronic, Tightening Sequence

Courtesy of AUDI OF AMERICA, LLC

The Mechatronic and its bolts must fit easily into the holes in the transmission.
If the Mechatronic does not go in easily, then it is possible that a shift fork or a gear selector is not in its center position. Check the center position and adjust if necessary.

After installing the Mechatronic:

Fig 7: Checking Gear Selector Yoke Position

Courtesy of AUDI OF AMERICA, LLC

-- Using a flashlight, check all the gear selectors through the opening between the Mechatronic and the transmission housing.

All four gear selector yokes must fit correctly in the shift fork eyes.

-- Tighten the Mechatronic bolts. Refer to Figure.

Install in reverse order, paying attention to the following:

CAUTION:

There is a risk of destroying the transmission control module (Mechatronic) with static discharge.

Always "discharge" the static electricity before working with electric connectors. Do this by touching a grounded object, for example vehicle ground, the vehicle or the hoist.
Do not touch contacts in transmission connector with hands.

-- Make sure the connector is correctly connected to the Mechatronic.

-- Install the ATF suction filter. Refer to ATF FILTER, REMOVING AND INSTALLING .

-- Install the ATF pan. Refer to OIL PAN, REMOVING AND INSTALLING .

-- Install the ATF filter housing or ATF line connecting pieces (depending on the version). Refer to ATF FILTER HOUSING, REMOVING AND INSTALLING

Fig 8: Identifying ATF Pipes And Filer Housing

Courtesy of AUDI OF AMERICA, LLC

CAUTION:

Danger of leaks!

Always replace the seals on the oil lines and the filter housing and coat with ATF.
Ensure a clean sealing surface.

Transmission Removed

-- Install the transmission. Refer to TRANSMISSION, INSTALLING .

The Transmission Is Installed

-- Fill with ATF. Refer to ATF, DRAINING AND FILLING , and Automatic Transmission Fluid .

Perform the relevant "Guided Function " using the vehicle diagnostic tester after replacing the DSG Transmission Mechatronic -J743-.