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Home >> BMW >> 2018 >> M4 2D Convertible, Automatic DCT Trans >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Dual-Clutch Transmission (DCT/DKG) - Repair -- M4 (F82 & F83) >> 28 00 Dual-Clutch Transmission >> Removing and installing or replacing transmission oil sump (GS7D36SG)

Removing and installing or replacing transmission oil sump (GS7D36SG)

IMPORTANT: Remove transmission oil sump only after it has cooled down.
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 TRANSMISSION OIL LEVEL .
Use only the approved transmission oil.
Failure to comply with this instruction will result in serious damage to the twin-clutch gearbox.

Recycling: 

Catch and dispose of escaping transmission oil.

Observe country-specific waste disposal regulations.

Necessary preliminary work: 

Removal: 

Release screw (1).

Release the heat shield (2) from the transmission oil sump a little.

G13691615Courtesy of BMW OF NORTH AMERICA, INC.

Remove oil drain plug (1).

Drain off transmission fluid.

G06905080Courtesy of BMW OF NORTH AMERICA, INC.

Unscrew all bolts.

Remove transmission oil sump (1).

Fig 1: Transmission Oil Sump Bolts Loosening Sequence
G06905081Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

Clean sealing ring groove with fluff-free cloth.

Insert screws until contact with screw heads is made.

Screw down to torque in specified sequence (1-14).

Tightening torque: 28 00 4AZ .

Fig 2: Transmission Oil Sump Bolts Tightening Sequence
G06905081Courtesy of BMW OF NORTH AMERICA, INC.

Parts  : Replace oil drain plug (1).

Tightening torque: 28 00 3AZ .

G06905080Courtesy of BMW OF NORTH AMERICA, INC.

Press the heat shield (2) on the transmission oil sump.

Insert screw (1) and tighten down.

G13691615Courtesy of BMW OF NORTH AMERICA, INC.

Required follow-up work: