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Home >> BMW >> 2015 >> Z4 sDrive28i, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (Dual-Clutch Automatic Transmission - Repair (N54) -- Z4_E89) >> Double Clutch Transmission Control Unit >> 28 60 030 Removing and installing/replacing the hydraulic cap (GS7D36SG)

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

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

Use only the approved TRANSMISSION OIL .

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

IMPORTANT: Read and comply with notes on PROTECTION AGAINST ELECTROSTATIC DISCHARGE (ESD PROTECTION) .

Necessary preliminary tasks: 

Place twin clutch transmission on a suitable surface.

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

Release screws.

Remove hydraulic cover (1).

Installation note: 

Replace gasket.

Replace screws.

Fig 1: Identifying Hydraulic Cover
G11150732Courtesy of BMW OF NORTH AMERICA, INC.

Installation of hydraulic cap:

Make sure seal is exactly seated.

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

Tightening torque 28 60 1AZ .

Fig 2: Transmission Hydraulic Cover Screws Tightening Sequence
G11150733Courtesy of BMW OF NORTH AMERICA, INC.