11 41 000 Removing and installing/replacing oil pump (N63) (X6 xDrive 50i)

Special tools required:

00 9 120
11 7 200
11 8 920
11 9 280
51 0 342
2 213 485

CAUTION: All adjustment operations on the chain drive must be observed.
A timing chain which is tensioned too tautly can cause interference noise in the chain drive.
A timing chain that is too slack can cause the timing chain to jump.
Risk of damage in oil pump drive.

Necessary preliminary work:

DRAINING ENGINE OIL .
REMOVE lower oil sump section.

Unscrew nuts (2).

Tightening torque: 11 41 1 AZ .

Remove intake pipe (1).

Installation note:

Replace O-ring.

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Release all nuts (1) using special tool 11 7 200.

TIGHTENING TORQUE 11 41 5 AZ .

Remove oil pump drive gear.

NOTE: Graphic shows engine removed

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Unscrew nuts (1).

Release screws, remove oil pump (1) with aid of a second person.

Installation note:

Replace screws.

TIGHTENING TORQUE 11 41 2AZ .

NOTE: Graphic without top oil sump

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Pull off engine oil line (1) upwards in direction of arrow.

NOTE: Graphic without top oil sump

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Installation note:

Replace sealing rings (1).

Lightly oil sealing ring 1 (1).

Coat engine oil pipe (2) with suitable lubricant.

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Installation note:

Replace O-ring (1) for oil feed line.

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Fit engine oil pipe (1) in direction of arrow.

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Installation note:

When the oil pump is replaced, the oil deflector (2) must be remounted.

Release screws (1).

Tightening torque: 11 41 6 AZ .

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Attach special tool 11 8 920 to special tool 11 9 280.

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CAUTION: Left-hand thread on oil pump screw connection.
Do not grip oil pump drive with a pair of pliers risk of damage .

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CAUTION: Nut (1) has left-hand thread.

Position the special tool 11 8 920 on the sprocket.

Slacken nut (1).

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Installation note:

Check mounting flats on pump shaft (1) for damage.

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CAUTION: Nut (1) has left-hand thread.

Grip pump with assistance of a second person.

Mount nut (1) with the special tool 00 9 120.

Tightening torque: 11 41 4 AZ .

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Join and secure nuts (1).

Tightening torque 11 41 2 AZ .

NOTE: Graphic without top oil sump

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Install oil pump drive gear.

Secure all nuts (1) with special tool 11 7 200.

TIGHTENING TORQUE 11 41 5 AZ .

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Adjust oil pump timing chain .

Pretension oil pump adjusting sleeve (1) with a hexagon socket wrench.

Adjustment value 10 mm +2 .

NOTE: Graphic without top oil sump

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Procedure on removed engine:

Upper oil sump has been removed .

Minimally preload timing chain (1) with special tool 51 0 342.

Read off measured value A on special tool 51 0 342 and note down.

CAUTION: Do not use force to preload timing chain (1).

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Using a screwdriver (1), pretension timing chain to minimal extent in direction of arrow.

Read off measured value B on special tool 51 0 342 and note down.

CAUTION: Do not use force preload timing chain.

Measured value A minus measured value B results in the adjustment value.

Adjustment value 10 mm +2 .

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Procedure on installed engine:

Upper oil sump has been installed .

Position the secondary indicator (1) of the special tool 2 213 485 on the oil pump chain.

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Installation note:

Attachment point (1) N63O0/N63O1/S63.

Attachment point (2) N74.

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CAUTION: Do not use force preload timing chain.

Push drag pointer (1) to the left and right until value has been determined.

Adjustment value 10 mm +2 .

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Adjust oil pump timing chain .

Pretension oil pump adjusting sleeve (1) with a hexagon socket wrench.

Adjustment value 10 mm +2 .

NOTE: Graphic without top oil sump

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Join and secure screw (2).

Tightening torque 11 41 2 AZ .

NOTE: Graphic without top oil sump

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Assemble engine.