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

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

IMPORTANT: After completion of work, check oil level . .
Checking/topping up oil level in twin-clutch gearbox (GS7D36SG). 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 work

Remove twin-clutch gearbox
Remove clutch

Release screws (1).

Tightening torque, see 28 10 7AZ in 28 10 HOUSING WITH ADD-ON PARTS .

Remove oil separator (2).

Fig 1: Identifying Oil Separator And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1).

Tightening torque, see 28 10 6AZ in 28 10 HOUSING WITH ADD-ON PARTS .

Disconnect connector (3).

Release combination sensor (2) from housing.

Fig 2: Identifying Combination Sensor, Connector And Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1) and (2).

Tightening torque, see 28 10 8AZ in 28 10 HOUSING WITH ADD-ON PARTS .

Installation note:

Observe installation position and screw length.

Replace sealing washer on screw (2).

Fig 3: Identifying Sealing Washer With Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

Tightening torque, see 28 10 9AZ in 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.

Fig 4: Identifying Screws, Pressure Pipe, Return Line And Flat Seal

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: The pressure pipe must not be detached from the pump.

IMPORTANT: Before 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.

Fig 5: Identifying O-Ring

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT:

Installation sequence, oil pump

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

Fig 6: Identifying Return Line With Screws

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Installation note:

Centering sleeves must not be damaged or crushed.

IMPORTANT:

Fig 7: Transmission Oil Pump Bolts Tightening/Loosening Sequence (GS7D36SG)

Courtesy of BMW OF NORTH AMERICA, INC.