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Automatic Transmission -- Repair BMW M3 E90

Automatic Trans 43 illustrations ~2187 words

00 Danger of poisoning if oil is ingested/absorbed through the skin

Danger of poisoning!

Ingesting oil or absorbing through the skin may cause poisoning!

Possible symptoms are

  1. Headaches
  2. Dizziness
  3. Stomach aches
  4. Vomiting
  5. Diarrhoea
  6. Cramps/fits
  7. Unconsciousness

Protective measures/rules of conduct

  1. Pour oil only into appropriately marked containers
  2. Do not pour oil into drinking vessels (drinks bottles, glasses, cups or mugs)
  3. Observe country-specific safety regulations

First aid measures

  1. Do not induce vomiting. If the person affected is still conscious, he/she must rinse out their mouth with water, drink plenty of water and consult a doctor immediately. If the person affected is unconscious, do not administer anything by mouth, place the person in the recovery position and seek immediate medical attention.

00 Risk of injury if oil comes into contact with eyes and skin

Danger of injury!

Contact with eyes or skin may result in injury!

Possible symptoms are

  1. Impaired sight
  2. Irritation of the eyes
  3. Reddening of the skin
  4. Rough and cracked skin
  1. Wear protective goggles
  2. Wear oil-resistant protective gloves
  3. Observe country-specific safety regulations
  1. Eye contact: Rinse eyes immediately with plenty of water for at least 15 minutes; if available, use an eye-rinsing bottle. If irritation of the eyes persists, consult a doctor.
  2. Skin contact: Wash off with soap and water immediately. If irritation persists, consult a doctor. NOTE: Do not use solvents/thinners.

00 Safety instructions for handling oil

WARNINGDANGER OF POISONING if oil is ingested/absorbed through the skin! RISK OF INJURY if oil comes into contact with eyes and skin!

Recycling

Observe country-specific waste-disposal regulations.

Measures if oil is unintentionally released

  1. Personal precautionary measures: Danger of slipping! Keep non-involved persons away from the work area. Wear personal protective clothing/equipment.
  2. Environmental protection measures: Prevent oil from draining into drain channels, sewerage systems, pits, cellars, water and the ground.
  3. Limiting spread: Use oil blocks to prevent the surface spread of oil.
  4. Cleaning procedure: Bind and dispose of escaped oil with nonflammable absorbents. NOTE: Do not flush oil away with water or aqueous cleaning agents.

Breakdown of BMW designation

A5S 300J (former designation)
ATransmission typeS = Manual gearbox A = Automatic transmission
5Number of forward gears
SType of top gearD = Direct gear S = Overdrive gear
300Max. input torque (Nm)
JCode letter of transmission manufacturerG = Getrag J = Jatco R = GMPT (General Motors Powertrain) Z = ZF (Zahnradfabrik Friedrichshafen)
SMGNotesSMG = Sequential M gearbox/transmission

BMW DESIGNATION (A5S 300J)

GS6-37BZ (new designation according to BMW Group Standard GS 90007)
GTransmission
STransmission typeS = Manual gearbox A = Automatic transmission
6Number of forward gears
= Standard with manual gearshift HP = Hydraulic planetary gear train DKG= Twin-clutch transmission/gearbox
37Transmission type26 = D-transmission 31 = C-transmission 39 = F-transmission 37 = H-transmission 53 = G-transmission 17 = I-transmission 47= J transmission SMG -7-speed 45 = K transmission 36= Transmission DKG
BGear setB = Gasoline gear ratio D = Diesel gear ratio S= Sport gear ratio
ZCode letter of transmission manufacturerG = Getrag Z = ZF (Zahnradfabrik Friedrichshafen)

BMW DESIGNATION (GS6-37BZ)

Manual gearbox

BMW designationManufacturerManufacturer designationRemarks
S5D 200GGetragB transmission (220/5)
S5D 200GGetragB transmission (221/5)For M41 engine only
S5D 250GGetragB transmission (220/5)Reinforced design
S5D 260ZZFC-transmission (S5-31 D)For M51 engine only
S5D 280ZZFC-transmission (S5-31)
S5D 310ZZFC-transmission (S5-31)Up to 9.95
S5D 320ZZFC-transmission (S5-31)From 9.95 (reinforced design)
GS5S31BZ (SMG)ZFC transmissionSMG
GS5-39DZZFF transmission
S6S 420GGetragD-transmission (226/6)
S6S 420G (SMG)GetragD transmissionSMG
S6S 560GGetragE-transmission (286/6)
GS6-37BZZFH-transmission
GS6S37BZ (SMG)ZFH-transmission
GS6-37DZZFH-transmission
GS6-37BGGetragH-transmission
GS6-53BZZFG-transmission
GS6-53DZZFG-transmission
GS6-17BGGetragI-transmission
GS6-17DGGetragI-transmission
GS7S47BG (SMG)GetragJ-transmission (247)SMG -7-speed
GS7D36SGGetragDKG (436)DKG -7-speed
GS6- 45BZZFK transmission
GS6- 45DZZFK transmission

MANUAL GEARBOX DESIGNATION

BMW designationManufacturerManufacturer designationRemarks
A4S 200RGMPTGM4
A4S 270RGMPTTHM-R1wTransmission wide-stepped
A4S 310RGMPTTHM-R1
A5S 300JJatcoJatco
A5S 310ZZF5HP-18
A5S 325ZZF5HP-19
A5S 440ZZF5HP-24
A5S 560ZZF5HP-30
A5S 360R/390RGMGM5
GA6HP19ZZF6HP19
GA6HP26ZZF6HP26
GA6HP32ZZF6HP32
GA6L45RGMGM6
GA8HP45ZZF8HP45
GA8HP70ZZF8HP70
GA8HP90ZZF8HP90
GA7AHSCDDaimlerAHS-CHybrid

AUTOMATIC TRANSMISSION DESIGNATION

Special tools required/notes

Note. The universal transmission bracket is introduced for the E60 AWD Suitable for manual and automatic transmissions

IMPORTANTFront and rear supports (1) can be laterally adjusted by means of screws (2). Carrier (3) of rear supports (1) can be longitudinally adjusted by means of screw. Supports must be adapted in length and width to the transmission.

Scheme 385

Scheme 385

Supporting transmission

Support transmission with special tools 234050 and 002030.

IMPORTANTTransmission must be secured with tensioning strap (1).

Scheme 386

Scheme 386

Note. The transmission retaining bridge 24 0 200 is suitable for both manual and automatic transmissions

IMPORTANTAdapters and spindles must be adapted for positive locking to the transmission. (Risk of injury)

Adapt adapters (1) and spindle with thrust piece (3) to transmission.

Adapt length with slide (2).

Screw in spindle (4).

IMPORTANTBefore mounting on assembly stand 00 1 450, check retaining bridge for secure seating.

Scheme 387

Scheme 387
IMPORTANTIt 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 GEARBOX OIL LEVEL . Use only the DUAL-CLUTCH TRANSMISSION FLUID (M DCT DRIVE LOGIC) . Failure to comply with this instruction will result in serious damage to the twin-clutch gearbox.

Necessary preliminary work

  1. Remove underbody protection . See «5147490 REMOVING AND INSTALLING/REPLACING FRONT UNDERBODY PROTECTION»(/bmw/m3/e90-2007-2013/remont/door-locks-anti-theft-systems/#body-equipment-repair-e90__51-47-490-removing-and-installingreplacing) or «5147491 REMOVING AND INSTALLING/REPLACING REAR UNDERBODY PROTECTION»(/bmw/m3/e90-2007-2013/remont/door-locks-anti-theft-systems/#body-equipment-repair-e90__51-47-491-removing-and-installingreplacing)
  2. Remove «REINFORCEMENT PLATE»(/bmw/m3/e90-2007-2013/remont/axle-shafts/#front-axle-repair-e90__31-10-010-removing-and-installingreplacing)
  3. Remove heat shields
  4. Remove «EXHAUST SYSTEM»(/bmw/m3/e90-2007-2013/remont/exhaust/#exhaust-system-repair-e90__18-00-018-removing-and-installing)
  5. Support transmission using Universal BMW transmission take-up.
  6. Remove «22 32 050 REPLACING CROSSMEMBER FOR TRANSMISSION MOUNTING (S65)»(/bmw/m3/e90-2007-2013/remont/mechanical/#engine-and-gearbox-suspension-repair-e90) or .
  1. Unflange propeller shaft from transmission and tie to one side
  2. Tasks are described in Removing «PROPELLER SHAFT»(/bmw/m3/e90-2007-2013/remont/driveshaft-universal-joints/#propeller-shaft-repair-e90__26-11-000-removing-and-installing) .

Note. To rotate propeller shaft, unlock parking lock.

Release screws.

Remove transmission bearing block (1).

Tightening torque: 22 32 2AZ .

Scheme 388

Scheme 388

Grip output flange (1) with special tool 230020.

Release nut with special tool 232320.

Tightening torque: 28 10 HOUSING WITH ADD-ON PARTS .

Installation note

Replace nut and secure with Loctite 243.

Scheme 389

Scheme 389

Detach output flange (1) with special tool 331150 and adapter plate 33 1 154 from output shaft.

Scheme 390

Scheme 390

Attach special tool 24 2 353 to output shaft (1).

Graphic shows: Automatic transmission

Scheme 391

Scheme 391

Screw in special tool 24 2 351 until it is firmly connected with radial shaft seal.

Pull out radial shaft seal by screwing in special tool 24 2 352.

Graphic shows: Automatic transmission

Scheme 392

Scheme 392

Oil sealing lip on radial shaft seal (1). Drive in radial shaft seal (1) with special tool 230410 as far as it will go.

Graphic shows: Automatic transmission

Scheme 393

Scheme 393

24..... Manually releasing transmission lock

For various tasks, it is necessary to unlock and lock the transmission lock.

This can be done from inside or underneath the vehicle.

From vehicle interior

  1. Refer to «MANUAL EMERGENCY UNLOCKING OF TRANSMISSION LOCK»(/bmw/m3/e90-2007-2013/remont/automatic-trans/#double-clutch-gearbox-repair__28-50-001-manual-emergency-release) .

Underneath vehicle

  1. Remove «UNDERBODY PROTECTION»(/bmw/m3/e90-2007-2013/remont/door-locks-anti-theft-systems/#body-equipment-repair-e90__51-47-491-removing-and-installingreplacing)
  2. Press lever (1) upwards.

Lock

  1. Release lever (1).

Scheme 394

Scheme 394

If permanent release is desired

  1. Release screw (1).
  2. Unlock retainer (2).
  3. Release cable from operating lever (4).
  4. Tie up operating lever (4) with cable strap.

Lock

Scheme 395

Scheme 395
  1. Unfasten operating lever (4) and secure cable.

28 60 010 Removing and installing mechatronics (GS7D36SG)

Note. When replacing mechatronics: Import present gearbox data into new mechatronics

IMPORTANTIt 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 GEARBOX OIL LEVEL . Use only the DUAL-CLUTCH TRANSMISSION FLUID (M DCT DRIVE LOGIC) . Failure to comply with this instruction will result in serious damage to the twin-clutch gearbox.
IMPORTANTRead and comply with notes on PROTECTION AGAINST ELECTROSTATIC DISCHARGE (ESD PROTECTION) .
  1. Read out gearbox data of mechatronics to be replaced
  2. Remove «TWIN-CLUTCH GEARBOX»(/bmw/m3/e90-2007-2013/remont/automatic-trans/#double-clutch-gearbox-repair__28-00-001-removing-and-installing)

Place twin-clutch gearbox on a suitable surface.

To prevent the gearbox oil from spilling out, make sure that the hydraulic cap point upward.

Remove HYDRAULIC COVER (1).

Scheme 396

Scheme 396

Ensure correct installation position.

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

Installation note

Replace holder, retaining lug 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.

Scheme 397

Scheme 397
IMPORTANTBridge (4) of connector must not break. Wiring harness must be replaced if bridge breaks.

CPA (1) in second locking position.

Installation note

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

Scheme 398

Scheme 398

Scheme 399

Scheme 399

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.

Scheme 400

Scheme 400
IMPORTANTCheck the installation location of the centering pins (1). The centering pins (1) of the mechatronics remain in the housing.

Scheme 401

Scheme 401

Installing mechatronics

Install a new metal bead gasket.

Install mechatronics.

Fit mounting template.

IMPORTANTAdhere 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 CONTROL UNIT, MECHATRONICS, HYDRAULICS . Tighten down screws in sequence 13-20 to 5 Nm. Remove mounting template.
IMPORTANTIt is essential to adhere to conditions of absolute cleanliness. Any dirty parts must be cleaned before removing the clutch cover. After completion of work, check GEARBOX OIL LEVEL . Use only the DUAL-CLUTCH TRANSMISSION FLUID (M DCT DRIVE LOGIC) . Failure to comply with this instruction will result in serious damage to the twin-clutch gearbox.
IMPORTANTRead and comply with notes on PROTECTION AGAINST ELECTROSTATIC DISCHARGE (ESD PROTECTION) .

Installation note

  1. Removal and installation of clutch cover: Replace «RADIAL SHAFT SEAL»(/bmw/m3/e90-2007-2013/remont/automatic-trans/#automatic-transmission-repair) , O-ring and snap ring.
  2. Replacement clutch cover: Replace as a single assembly only (incl. radial shaft seal, O-ring, bearing, retaining plate and snap ring).
  1. Remove «TWIN-CLUTCH GEARBOX»(/bmw/m3/e90-2007-2013/remont/automatic-trans/#double-clutch-gearbox-repair__28-00-001-removing-and-installing)

To prevent the gearbox oil from spilling out, tilt the gearbox back before removing the clutch cover.

Installation note

After completing work, add gearbox oil and check GEARBOX OIL LEVEL .

Lever snap ring (1) out of housing with a suitable tool.

Installation note

Replace snap ring.

Scheme 402

Scheme 402

Graphic shows: Twin-clutch gearbox S65

Slip bush 230390 must be used when clutch cover is removed and installed.

Pull clutch cover with special tool 135250 and adapter 54 0 163 out of housing.

IMPORTANTEnsure uniform (non-tilting) detachment by alternately using the 3 tightening threads.

Scheme 403

Scheme 403

Graphic shows: Twin-clutch gearbox S65

Remove oil fouling with fluff-free cloth.

Clean snap ring groove before installing clutch plate.

Press clutch cover (1) into housing with arrow pointing up and strike evenly with a plastic mallet.

Then secure clutch cover with snap ring.

Make sure snap ring is correctly seated.

Installation note

Moisten O-ring and radial shaft seal with gearbox oil.

Scheme 404

Scheme 404

28 40 020 Removing and installing or replacing clutch support (GS7D36SG)

IMPORTANTAfter completion of work, check TRANSMISSION OIL LEVEL . Use only the DUAL-CLUTCH TRANSMISSION FLUID (M DCT DRIVE LOGIC) . Failure to comply with this instruction will result in serious damage to the twin-clutch gearbox.
IMPORTANTRead and comply with notes on PROTECTION AGAINST ELECTROSTATIC DISCHARGE (ESD PROTECTION) .

Necessary preliminary tasks

  1. Remove «TWIN-CLUTCH GEARBOX»(/bmw/m3/e90-2007-2013/remont/automatic-trans/#double-clutch-gearbox-repair__28-00-001-removing-and-installing)
  2. Remove «CLUTCH»(/bmw/m3/e90-2007-2013/remont/automatic-trans/#automatic-transmission-repair)

Remove OIL PUMP (1).

Unfasten screws (2).

Tightening torque: 28 10 HOUSING WITH ADD-ON PARTS .

Remove clutch support (3).

Installation

Replace screws and seal.

Scheme 405

Scheme 405
IMPORTANTBefore installing clutch support: Make sure without fail that seal (1) is installed in correct position and piston rings are correctly seated on input shaft. Secure clutch support screw connections in diagonal sequence. Tightening torque: 28 10 HOUSING WITH ADD-ON PARTS .

Scheme 406

Scheme 406

28 10 020 Removing and installing or replacing combination sensor (GS7D36SG)

IMPORTANTAfter completion of work, check TRANSMISSION OIL LEVEL . Use only the DUAL-CLUTCH TRANSMISSION FLUID (M DCT DRIVE LOGIC) . Failure to comply with this instruction will result in serious damage to the twin-clutch gearbox.
IMPORTANTRead and comply with notes on PROTECTION AGAINST ELECTROSTATIC DISCHARGE (ESD PROTECTION) .
  1. Remove «TWIN-CLUTCH GEARBOX»(/bmw/m3/e90-2007-2013/remont/automatic-trans/#double-clutch-gearbox-repair__28-00-001-removing-and-installing)
  2. Remove «CLUTCH»(/bmw/m3/e90-2007-2013/remont/automatic-trans/#automatic-transmission-repair)

Release screw (1).

Tightening torque 28 10 HOUSING WITH ADD-ON PARTS .

Release combination sensor (2) from housing.

Disconnect connector (3).

Installation

Replace screw.

Scheme 407

Scheme 407
IMPORTANTDo not where possible release cable (4) from holder (5).

Installation

If holder (5) does have to be released, replace aluminum screw (6).

Tightening torque 28 10 HOUSING WITH ADD-ON PARTS .

IMPORTANTTo disconnect combination sensor plug: Press lock together in area (1) and simultaneously detach plug.

Scheme 408

Scheme 408

28 10 010 Removing and installing or replacing pump unit (GS7D36SG)

IMPORTANTAfter completion of work, check GEARBOX OIL LEVEL . Failure to comply with this instruction will result in serious damage to the twin-clutch gearbox.
IMPORTANTRead and comply with notes on PROTECTION AGAINST ELECTROSTATIC DAMAGE (ESD PROTECTION) .
  1. Remove «TWIN-CLUTCH GEARBOX»(/bmw/m3/e90-2007-2013/remont/automatic-trans/#double-clutch-gearbox-repair__28-00-001-removing-and-installing)
  2. Remove «CLUTCH»(/bmw/m3/e90-2007-2013/remont/automatic-trans/#automatic-transmission-repair)

Release screws (1).

Tightening torque 28 10 HOUSING WITH ADD-ON PARTS .

Remove oil separator (2).

Scheme 409

Scheme 409

Release screw (1).

Tightening torque 28 10 HOUSING WITH ADD-ON PARTS .

Disconnect connector (3).

Release combination sensor (2) from housing.

Release screws (1) and (2).

Tightening torque 28 10 HOUSING WITH ADD-ON PARTS .

Installation note

Observe installation position and screw length.

Replace sealing washer on screw (2).

Scheme 410

Scheme 410

Release screws (1).

Tightening torque 28 10 HOUSING WITH ADD-ON PARTS .

Release oil pump with pressure pipe (2) and return line (3) from housing.

Installation note

Replace flat seal (4).

During reinstallation O-ring remains on return line.

Scheme 411

Scheme 411
IMPORTANTThe pressure pipe must not be detached from the pump.
IMPORTANTBefore installing oil pump: Depending on version, there is a bore hole and a recess for the O-ring (1). If the bore hole is present, attention must be paid to ensuring the O-ring (1) is in the right installation position and correctly seated behind the pump.

Scheme 412

Scheme 412
IMPORTANT

Installation sequence, oil pump

  1. Moisten O-ring with transmission oil
  2. Position pump in transmission using centering sleeves.
  3. Gently insert screws (1) with pressure pipe
  4. Press in return line (2) until it audibly snaps into place
  5. Screw in oil pump
  6. The tightening sequence from 1-8 is mandatory

Scheme 413

Scheme 413

Installation note

Centering sleeves must not be damaged or crushed.

Scheme 414

Scheme 414
IMPORTANTAfter completing work: Check TRANSMISSION FLUID LEVEL . Use only the DUAL-CLUTCH TRANSMISSION FLUID (M DCT DRIVE LOGIC) . Perform clutch adaptation (Service Functions) Teach in valve characteristics (Service Functions) Failure to comply with this instruction will result in serious damage to the twin-clutch gearbox.
IMPORTANTRead and comply with notes on PROTECTION AGAINST ELECTROSTATIC DISCHARGE (ESD PROTECTION) .
IMPORTANTTwin-clutch gearbox must be on neutral (position "N") prior to removal of clutch or gear box! Changing gears is only possible with engine running! To prevent gearbox oil from escaping, move gearbox into an upright position before removing the twin clutch.
  1. Remove «TWIN-CLUTCH GEARBOX»(/bmw/m3/e90-2007-2013/remont/automatic-trans/#double-clutch-gearbox-repair__28-00-001-removing-and-installing)
  2. Remove «CLUTCH COVER»(/bmw/m3/e90-2007-2013/remont/automatic-trans/#automatic-transmission-repair)
IMPORTANTThe clutch cage can only be removed and installed with special tool 230400. Special tool 230400 must be pushed in entirely and rest flush on clutch cage. Twist gearbox input shafts towards each other if necessary.

Scheme 415

Scheme 415

Push parking lock lever (1) as far upwards as possible and secure with cable straps (2).

Scheme 416

Scheme 416

Rotate drive shaft (1) until holes (2) are directly visible.

Check clearance with a suitable tool.

Scheme 417

Scheme 417

Insert special tool 230400 and release clutch by rotating counter-clockwise (approx. 8 turns).

Pull clutch out of housing.

Installation note

Put gearbox in an upright position.

The clutch is correctly installed if the oil pump gear turns.

Install the clutch with special tool 230400 while constantly rotating.

Turn clockwise up to stop, then screw down to torque.

Tightening torque, see 28 40 DOUBLE CLUTCH GEARBOX (DKG) .

Scheme 418

Scheme 418
IMPORTANTWarning: Installing the clutch may involve the danger of injury!

Installation note

Under no circumstances are hammers or other pounding tools to be used when installing the clutch.

The clutch must be slid over the piston rings and onto the clutch support.

IMPORTANTWhen reinstalling the clutch, check that the piston rings (1) and the needle bearings (2) are present and correctly seated on the clutch support. Mount clutch carefully to clutch support/do not tilt, to avoid damaging the piston rings (1).

Scheme 419

Scheme 419

28 60 030 Removing and installing/replacing the hydraulic cap (GS7D36SG)

IMPORTANTIt 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 TRANSMISSION OIL LEVEL . Use only the DUAL-CLUTCH TRANSMISSION FLUID (M DCT DRIVE LOGIC) . Failure to comply with this instruction will result in serious damage to the twin clutch transmission.
IMPORTANTRead and comply with notes on PROTECTION AGAINST ELECTROSTATIC DISCHARGE (ESD PROTECTION) .
  1. Remove «TWIN CLUTCH TRANSMISSION»(/bmw/m3/e90-2007-2013/remont/automatic-trans/#double-clutch-gearbox-repair__28-00-001-removing-and-installing)

Place twin clutch transmission on a suitable surface.

To prevent the gearbox oil from spilling out, make sure that the hydraulic cap point upward.

Release screws.

Remove hydraulic cover (1).

Installation note

Replace seal.

Replace screws.

Installation of hydraulic cap

Make sure seal is exactly seated.

It is mandatory to comply with the specified order of screw connections 1-12.

Scheme 420

Scheme 420

28 60 514 Replacing mechatronics (GS7D36SG)

Note. When replacing mechatronics: Import present transmission data into new mechatronics

IMPORTANTIt 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 GEARBOX OIL LEVEL . Failure to comply with this instruction will result in serious damage to the twin-clutch gearbox.
IMPORTANTRead and comply with notes on PROTECTION AGAINST ELECTROSTATIC DISCHARGE (ESD PROTECTION) .
  1. Read out transmission data of mechatronics to be replaced
  2. Remove «TWIN-CLUTCH GEARBOX»(/bmw/m3/e90-2007-2013/remont/automatic-trans/#double-clutch-gearbox-repair__28-00-001-removing-and-installing)

Place twin clutch transmission on a suitable surface.

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

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.

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

CPA (1) in second locking position.

Installation note

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

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.

IMPORTANTCheck the installation position of the centering pins (1). The centering pins (1) of the mechatronics remain in the housing.

The new mechatronics ship as shown here, with the shift piston in the neutral position.

Scheme 421

Scheme 421

In the gearbox, the gearshift rods have to be set to the neutral position (N) as shown here before the new mechatronics are installed.

Scheme 422

Scheme 422

Install a new metal bead gasket.

Install mechatronics.

Fit mounting template.

IMPORTANTAdhere 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 CONTROL UNIT, MECHATRONICS, HYDRAULICS . Tighten down screws in sequence 13-20 to 5 Nm. Remove mounting template.
IMPORTANTIt is essential to adhere to conditions of absolute cleanliness. Any dirty parts must be cleaned before removing the clutch cover.
  1. Remove «CLUTCH COVER»(/bmw/m3/e90-2007-2013/remont/automatic-trans/#automatic-transmission-repair)

To prevent the transmission oil from spilling out, tilt the gearbox back before removing the clutch cover.

Installation note

After completion of work, check TRANSMISSION OIL LEVEL .

Failure to comply with this instruction will result in serious damage to the twin clutch transmission.

Use a suitable tool to take the radial shaft seal (1) off the clutch cover.

IMPORTANTRisk of damage: Damage to the clutch cover will result in oil leaks! If the CLUTCH COVER was damaged on removing the radial shaft seal, it is imperative that the cover be replaced.

Scheme 423

Scheme 423

Place the clutch cover (1) out flat on a workbench.

IMPORTANTPay attention to lug (2).

Coat sealing lips of radial shaft seal with transmission oil.

Press the radial shaft seal (3) lightly into the clutch cover.

Scheme 424

Scheme 424

Use special tool 242370 to drive the radial shaft seal into the clutch cover until the sealing ring is flush.

Scheme 425

Scheme 425

Use a suitable tool to take the O-ring of the clutch cover out of the groove.

Use a lint-free cloth to remove oil contamination from the O-ring groove.

Installation note

Replace O-ring.

Coat O-ring with transmission oil before installing.

Scheme 426

Scheme 426

28 60 020 Replacing wiring harness (GS7D36SG)

IMPORTANTAfter completion of work, check TRANSMISSION OIL LEVEL . Use only the DUAL-CLUTCH TRANSMISSION FLUID (M DCT DRIVE LOGIC) . Failure to comply with this instruction will result in serious damage to the twin-clutch gearbox.
IMPORTANTRead and comply with notes on PROTECTION AGAINST ELECTROSTATIC DISCHARGE (ESD PROTECTION) .
  1. Remove «TWIN-CLUTCH GEARBOX»(/bmw/m3/e90-2007-2013/remont/automatic-trans/#double-clutch-gearbox-repair__28-00-001-removing-and-installing)
  2. Remove «MECHATRONICS»(/bmw/m3/e90-2007-2013/remont/automatic-trans/#automatic-transmission-repair__28-60-010-removing-and-installing)
  3. Remove «CLUTCH»(/bmw/m3/e90-2007-2013/remont/automatic-trans/#automatic-transmission-repair)

Release screw (1).

Scheme 427

Scheme 427

Release screw (1).

Tightening torque: see 28 10 HOUSING WITH ADD-ON PARTS .

Release aluminum screw (6).

Tightening torque: see 28 10 HOUSING WITH ADD-ON PARTS .

Installation

Replace aluminum screw.

Release combination sensor (2) from housing.

Disconnect connector (3).

Removing wiring harness (4) with earth terminal (5) from housing.

IMPORTANTGuide earth terminal (5) carefully through transmission connector bore. Risk of damage to sealing surface.
IMPORTANTTo disconnect combination sensor plug: Press lock together in area (1) and simultaneously detach plug.