28 60 514 Replacing mechatronics (GS7D36SG)

WARNING: This page is about a different variant/trim than selected.

NOTE: When replacing mechatronics:

Import present transmission data into new mechatronics

IMPORTANT: It is essential to adhere to conditions of absolute cleanliness.
Any dirty parts must be cleaned before the hydraulic cap is loosened.
After completion of work, check oil level ..
Use only the approved transmission oil DCTF-1 Pentosin (P/N 83 22 2 147 477).
Failure to comply with this instruction will result in serious damage to the twin-clutch gearbox.

IMPORTANT: Read and comply with notes on ESD PROTECTION (ELECTRO STATIC DISCHARGE) .

Necessary preliminary tasks

Read out transmission data of mechatronics to be replaced
Remove twin-clutch gearbox

Place twin clutch transmission on a suitable surface.

To prevent the transmission oil from spilling out, make sure that the hydraulic cap points upward.

Remove hydraulic cap .

Fig 1: Identifying Hydraulic Cap

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Ensure correct installation position.

Press holder (2) together from right and release cable (1).

Installation note:

Replace holder.

Retaining lugs must point to the right.

If fitted: Pull out CPA pin (7) to second locking position.

Release connector lock (6) and at same time detach connector (3) from retaining tabs (5) towards right.

IMPORTANT: Bridge (4) of connector must not break.
Wiring harness must be replaced if bridge breaks.

Fig 2: Identifying Holder, Cable, Retaining Tabs, CPA Pin, Connector Lock And Bridge

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CPA (1) in second locking position.

Installation note:

Press CPA pin down until it is flush with the housing.

Fig 3: Identifying CPA Pin

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Fig 4: Automatic Transmission Valve Body (Mechatronics) Screws Tightening/Loosening Sequence

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Place mounting template over mechatronics.

Open screws 1-20.

NOTE: Replace screws 1-12.
Screws 13-20 remain captive on module.
Remove mounting template.

Lift mechatronics out of housing.

Remove metal bead gasket.

Fig 5: Lifting Mechatronics From Housing

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IMPORTANT: Check the installation position of the centering pins (1).
The centering pins (1) of the mechatronics remain in the housing.

Fig 6: Identifying Centering Pins

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The new mechatronics are supplied with the shift piston in neutral position as illustrated.

Fig 7: Identifying Mechatronics Shift Piston In Neutral Position

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In the gearbox the gearshift rods must be set to neutral position (N) as illustrated before the new mechatronics are fitted.

Fig 8: Identifying Gearshift Rods In Neutral Position

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Installing mechatronics

Install a new metal bead gasket.

Install mechatronics.

Fit mounting template.

Fig 9: Automatic Transmission Valve Body (Mechatronics) Screws Tightening/Loosening Sequence

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Adhere without fail to the screwing sequence indicated on the template.
The screw length can be checked by means of the insert pockets shaped in the template.

Insert screws in sequence 1-12 and pre-tighten to 2 Nm.
Tighten down screws 1-12 to tightening torque and angle of rotation. See 28 60 2AZ in 28 60 CONTROL UNIT, MECHATRONICS, HYDRAULICS .
Tighten down screws in sequence 13-20 to 5 Nm.
Remove mounting template.