BMW 7 Series: Removing And Installing/Replacing Engine Oil Cooler (N54, N63)

Necessary preliminary tasks

• Remove front right WHEEL ARCH TRIM.

WARNING: Danger of scalding! Only perform this work after engine has cooled down.

IMPORTANT: Wear protective goggles and gloves.

IMPORTANT: Adhere to conditions of absolute cleanliness when working on the engine oil circuit.

To avoid engine damage, do not allow any dirt particles to get into the engine oil circuit.

Recycling Engine oil escapes when oil lines are released. Catch and dispose of emerging engine oil.

Observe country-specific waste-disposal regulations.

Release screw (1).

On N54 release retainer.

Tightening torque 17 22 6AZ.

Release screw (2).

Tightening torque 17 22 8AZ.

Unlock oil lines (3) and detach from engine oil cooler flange.

Seal off engine oil cooler flange and engine oil lines.

Catch and dispose of emerging oil.

Remove engine oil cooler (4).

Fig. 66: Identifying Engine Oil Cooler With Oil Lines And Mounting Screw

NOTE: After completing work, check engine oil level and top up engine oil if necessary.

Removing And Installing/Replacing Feed And Return Lines For Engine Oil Cooler (N63)

WARNING: Risk of scalding! Only perform this repair work after engine has cooled down.

IMPORTANT: Wear protective gloves and safety goggles.

IMPORTANT: Adhere to conditions of absolute cleanliness when performing repair work on the engine oil circuit.

To avoid engine damage, do not allow any dirt particles to get into the engine oil circuit.

Recycling

Engine oil escapes when the engine oil pipe is released.

Catch and dispose of emerging engine oil.

Observe country-specific waste disposal regulations.

Necessary preliminary work

• Lower FRONT AXLE SUPPORT.
• Remove WHEEL ARCH PANEL front section on right.

Release screw (1).

Tightening torque 17 22 4AZ.

Release screw (2).

Tightening torque 17 22 5AZ.

Remove engine oil pipes from oil filter control housing and oil sump.

Catch and dispose of emerging oil.

Fig. 67: Identifying Engine Oil Pipes Mounting Screws

Installation note: Replace all sealing rings of engine oil pipes! Release screw (1).

Tightening torque 17 22 6AZ.

Fig. 68: Identifying Engine Oil Pipes Mounting Screws

Release screw (1).

Tightening torque 17 22 6AZ.

Unlock engine oil pipes (3) and detach from engine oil cooler (4).

Feed out engine oil pipes (3) and remove.

Catch and dispose of emerging oil.

Fig. 69: Identifying Engine Oil Cooler With Engine Oil Pipes And Mounting Screw

NOTE: After completion of repair work, check engine oil level. Refill if necessary.

Check engine oil pipes for tightness.

REMOVING AND INSTALLING/REPLACING TRANSMISSION OIL COOLER (ALPINA B7 N63)

WARNING: Risk of scalding! Only perform this work after engine has cooled down.

IMPORTANT: Wear safety goggles and protective gloves.

Necessary preliminary work

• Remove front BUMPER TRIM

IMPORTANT: Adhere to conditions of absolute cleanliness when working on the transmission oil circuit.

To avoid transmission damage, do not allow any dirt particles to get into the transmission oil circuit.

Recycling

Transmission oil escapes when oil lines are released. Catch and dispose of escaping transmission oil.

Observe country-specific waste disposal regulations.

Release screw (1) on line clip.

Tightening torque 17 22 1AZ.

Fig. 70: Identifying Oil Pipe Mounting Screws

Release bolt (1) on transmission oil cooler.

Tightening torque 17 22 2AZ.

Detach oil lines from transmission oil cooler.

Replace O-rings.

Seal oil lines with suitable sealing plugs.

Catch and dispose of escaping transmission oil.

Fig. 71: Identifying Transmission Oil Cooler Mounting Bolts

Picture shows the right side, the procedure for the left side is identical.

Press together the retaining clips (1) on the left and right.

Remove transmission oil cooler towards front.

Fig. 72: Identifying Transmission Oil Cooler Mounting Clips

Only when replacing transmission oil cooler, modify holders on left and right.

Release screw (1).

Tightening torque 17 22 3AZ.

Remove holders on left and right.

Fig. 73: Identifying Transmission Oil Cooler Mounting Screws

NOTE: After completing work, check transmission oil level and top up transmission oil if necessary.

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